diff options
Diffstat (limited to 'src/main/java/org')
26 files changed, 2808 insertions, 0 deletions
diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/AnyNode.java b/src/main/java/org/onap/dcae/collectors/restconf/common/AnyNode.java new file mode 100755 index 0000000..044a9cf --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/AnyNode.java @@ -0,0 +1,127 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.dcae.collectors.restconf.common; + +import io.vavr.collection.List; +import io.vavr.collection.Set; +import io.vavr.control.Option; +import org.json.JSONArray; +import org.json.JSONException; +import org.json.JSONObject; + +import java.util.stream.StreamSupport; + +import static io.vavr.API.Set; + +public class AnyNode { + private Object obj; + + private AnyNode(Object object) { + this.obj = object; + } + + public static AnyNode fromString(String content) { + return new AnyNode(new JSONObject(content)); + } + + /** + * Returns key set of underlying object. It is assumed that underlying object is of type org.json.JSONObject. + * + * @return key set of underlying objects + */ + public Set<String> keys() { + return Set(asJsonObject().keySet().toArray(new String[]{})); + } + + /** + * Returns value associated with specified key wrapped with AnyValue object. It is assumed that this is of type + * org.json.JSONObject. + * + * @param key for querying value from jsonobject + * @return value associated with specified key + */ + public AnyNode get(String key) { + return new AnyNode(asJsonObject().get(key)); + } + + /** + * Returns string representation of this. If it happens to have null, the value is treated as + * org.json.JSONObject.NULL and "null" string is returned then. + * + * @return string representation of this + */ + public String toString() { + return this.obj.toString(); + } + + /** + * Returns optional of object under specified key, wrapped with AnyNode object. + * If underlying object is not of type org.json.JSONObject + * or underlying object has no given key + * or given key is null + * then Optional.empty will be returned. + * + * @param key for querying value from AnyNode object + * @return optional of object under specified key + */ + public Option<AnyNode> getAsOption(String key) { + try { + AnyNode value = get(key); + if (value.toString().equals("null")) { + return Option.none(); + } + return Option.some(value); + } catch (JSONException ex) { + return Option.none(); + } + } + + /** + * Converts underlying object to map representation with map values wrapped with AnyNode object. It is assumed that + * underlying object is of type org.json.JSONObject. + * + * @return converts underlying object to map representation + */ + public List<AnyNode> toList() { + return List.ofAll(StreamSupport.stream(((JSONArray) this.obj).spliterator(), false).map(AnyNode::new)); + } + + /** + * Checks if specified key is present in this. It is assumed that this is of type JSONObject. + * + * @param key is used to check presence in anynode object + * @return true if specified key is present in this + */ + public boolean has(String key) { + return !getAsOption(key).isEmpty(); + } + + /** + * Returns as JSONObject. + * + * @return jsonobject + */ + private JSONObject asJsonObject() { + return (JSONObject) this.obj; + } + + +} diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/AuthType.java b/src/main/java/org/onap/dcae/collectors/restconf/common/AuthType.java new file mode 100755 index 0000000..47ae8ac --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/AuthType.java @@ -0,0 +1,43 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ +package org.onap.dcae.collectors.restconf.common; + +public enum AuthType { + NONE, BASIC, DIGEST, OAUTH, Unspecified; + + public static AuthType fromString(String s) { + if ("basic".equalsIgnoreCase(s)) { + return BASIC; + } + if ("digest".equalsIgnoreCase(s)) { + return DIGEST; + } + if ("oauth".equalsIgnoreCase(s)) { + return OAUTH; + } + if ("none".equalsIgnoreCase(s)) { + return NONE; + } + if ("unspecified".equalsIgnoreCase(s)) { + return Unspecified; + } + throw new IllegalArgumentException("Invalid value for format: " + s); + } +} diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/Constants.java b/src/main/java/org/onap/dcae/collectors/restconf/common/Constants.java new file mode 100755 index 0000000..4845bfc --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/Constants.java @@ -0,0 +1,38 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.dcae.collectors.restconf.common; + +public class Constants { + public static final String KDEFAULT_TEMP_FILENAME = "templateFileName"; + public static final String KSETTING_REST_API_URL = "restapiUrl"; + public static final String KSETTING_HTTP_METHOD = "httpMethod"; + public static final String KSETTING_RESP_PREFIX = "responsePrefix"; + public static final String KSETTING_SKIP_SENDING = "skipSending"; + public static final String KSETTING_FORMAT = "format"; + public static final String KSETTING_DMAAPCONFIGS = "collector.dmaapfile"; + public static final String[] KDEFAULT_DMAAPCONFIGS = new String[]{"./etc/DmaapConfig.json"}; + public static final String KSETTING_SSE_CONNECT_URL = "sseConnectURL"; + public static final int KDEFAULT_MAXQUEUEDEVENTS = 1024 * 4; + public static final String RESPONSE_CODE = "restapi-result.response-code"; + public static final String OUTPUT_IDENTIFIER = "restapi-result.ietf-subscribed-notifications:output.identifier"; + public static final String RESPONSE_CODE_200 = "200"; + public static final String KCONFIG = "c"; +} diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/DataChangeEventListener.java b/src/main/java/org/onap/dcae/collectors/restconf/common/DataChangeEventListener.java new file mode 100755 index 0000000..97ee623 --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/DataChangeEventListener.java @@ -0,0 +1,51 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.dcae.collectors.restconf.common; + +import org.glassfish.jersey.media.sse.EventListener; +import org.glassfish.jersey.media.sse.InboundEvent; +import org.json.JSONArray; +import org.json.JSONObject; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +public class DataChangeEventListener implements EventListener { + private static final Logger log = LoggerFactory.getLogger(DataChangeEventListener.class); + private RestConfContext ctx; + + public DataChangeEventListener(RestConfContext ctx) { + this.ctx = ctx; + } + + @Override + public void onEvent(InboundEvent event) { + JSONArray jsonArrayMod; + log.info("On SSE Event is received"); + String s = event.readData(); + JSONObject jsonObj = new JSONObject(s); + jsonArrayMod = new JSONArray().put(jsonObj); + try { + RestConfProc.handleEvents(jsonArrayMod); + } catch (Exception e) { + e.printStackTrace(); + } + } +} diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/EventProcessor.java b/src/main/java/org/onap/dcae/collectors/restconf/common/EventProcessor.java new file mode 100755 index 0000000..3409f9c --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/EventProcessor.java @@ -0,0 +1,88 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.dcae.collectors.restconf.common; + + +import org.json.JSONObject; +import org.onap.dcae.collectors.restconf.common.event.publishing.EventPublisher; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.util.Arrays; +import java.util.HashMap; +import java.util.Map; + +public class EventProcessor implements Runnable { + private static final Logger log = LoggerFactory.getLogger(EventProcessor.class); + + static Map<String, String[]> streamidHash = new HashMap<>(); + public JSONObject event; + private EventPublisher eventPublisher; + + public EventProcessor(EventPublisher eventPublisher) { + this.eventPublisher = eventPublisher; + streamidHash = parseStreamIdToStreamHashMapping(new RestConfProc().streamID); + } + + private Map<String, String[]> parseStreamIdToStreamHashMapping(String streamId) { + Map<String, String[]> streamidHash = new HashMap<>(); + String[] list = streamId.split("\\|"); + for (String aList : list) { + String domain = aList.split("=")[0]; + String[] streamIdList = aList.substring(aList.indexOf('=') + 1).split(","); + streamidHash.put(domain, streamIdList); + } + return streamidHash; + } + + @Override + public void run() { + try { + + while (true) { + event = RestConfProc.fProcessingInputQueue.take(); + // As long as the producer is running we remove elements from + // the queue. + log.info("QueueSize:" + RestConfProc.fProcessingInputQueue.size() + "\tEventProcessor\tRemoving element: " + + event); + String[] streamIdList = streamidHash.get("route"); + log.debug("streamIdList:" + Arrays.toString(streamIdList)); + + if (streamIdList.length == 0) { + log.error("No StreamID defined for publish - Message dropped" + event); + } else { + sendEventsToStreams(streamIdList); + } + log.debug("Event published" + event); + } + } catch (Exception e) { + log.error("EventProcessor InterruptedException" + e.getMessage()); + Thread.currentThread().interrupt(); + } + } + + private void sendEventsToStreams(String[] streamIdList) { + for (String aStreamIdList : streamIdList) { + log.info("Invoking publisher for streamId:" + aStreamIdList); + eventPublisher.sendEvent(event, aStreamIdList); + } + } +} diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/Format.java b/src/main/java/org/onap/dcae/collectors/restconf/common/Format.java new file mode 100755 index 0000000..94344d6 --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/Format.java @@ -0,0 +1,37 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ +package org.onap.dcae.collectors.restconf.common; + +public enum Format { + JSON, XML, NONE; + + public static Format fromString(String s) { + if ("json".equalsIgnoreCase(s)) { + return JSON; + } + if ("xml".equalsIgnoreCase(s)) { + return XML; + } + if ("none".equalsIgnoreCase(s)) { + return NONE; + } + throw new IllegalArgumentException("Invalid value for format: " + s); + } +} diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/HttpMethod.java b/src/main/java/org/onap/dcae/collectors/restconf/common/HttpMethod.java new file mode 100755 index 0000000..d85d5f5 --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/HttpMethod.java @@ -0,0 +1,48 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + + +package org.onap.dcae.collectors.restconf.common; + +public enum HttpMethod { + GET, POST, PUT, DELETE, PATCH; + + public static HttpMethod fromString(String s) { + if (s == null) { + return null; + } + if (s.equalsIgnoreCase("get")) { + return GET; + } + if (s.equalsIgnoreCase("post")) { + return POST; + } + if (s.equalsIgnoreCase("put")) { + return PUT; + } + if (s.equalsIgnoreCase("delete")) { + return DELETE; + } + if (s.equalsIgnoreCase("patch")) { + return PATCH; + } + throw new IllegalArgumentException("Invalid value for HTTP Method: " + s); + } +} diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/HttpResponse.java b/src/main/java/org/onap/dcae/collectors/restconf/common/HttpResponse.java new file mode 100755 index 0000000..e1b97da --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/HttpResponse.java @@ -0,0 +1,30 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.dcae.collectors.restconf.common; + +import javax.ws.rs.core.MultivaluedMap; + +public class HttpResponse { + public int code; + public String message; + public String body; + public MultivaluedMap<String, String> headers; +} diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/JsonParser.java b/src/main/java/org/onap/dcae/collectors/restconf/common/JsonParser.java new file mode 100755 index 0000000..f29bbc3 --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/JsonParser.java @@ -0,0 +1,92 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.dcae.collectors.restconf.common; + +import org.codehaus.jettison.json.JSONArray; +import org.codehaus.jettison.json.JSONException; +import org.codehaus.jettison.json.JSONObject; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.util.ArrayList; +import java.util.HashMap; +import java.util.Iterator; +import java.util.Map; + +import static com.google.common.base.Preconditions.checkNotNull; + +public class JsonParser { + + private static final Logger log = LoggerFactory.getLogger(JsonParser.class); + + private JsonParser() { + // Preventing instantiation of the same. + } + + @SuppressWarnings("unchecked") + public static Map<String, String> convertToProperties(String s) + throws Exception { + + checkNotNull(s, "Input should not be null."); + + try { + JSONObject json = new JSONObject(s); + Map<String, Object> wm = new HashMap<>(); + Iterator<String> ii = json.keys(); + while (ii.hasNext()) { + String key1 = ii.next(); + wm.put(key1, json.get(key1)); + } + + Map<String, String> mm = new HashMap<>(); + + while (!wm.isEmpty()) + for (String key : new ArrayList<>(wm.keySet())) { + Object o = wm.get(key); + wm.remove(key); + + if (o instanceof Boolean || o instanceof Number || o instanceof String) { + mm.put(key, o.toString()); + + log.info("Added property: {} : {}", key, o.toString()); + } else if (o instanceof JSONObject) { + JSONObject jo = (JSONObject) o; + Iterator<String> i = jo.keys(); + while (i.hasNext()) { + String key1 = i.next(); + wm.put(key + "." + key1, jo.get(key1)); + } + } else if (o instanceof JSONArray) { + JSONArray ja = (JSONArray) o; + mm.put(key + "_length", String.valueOf(ja.length())); + + log.info("Added property: {}_length: {}", key, String.valueOf(ja.length())); + + for (int i = 0; i < ja.length(); i++) + wm.put(key + '[' + i + ']', ja.get(i)); + } + } + return mm; + } catch (JSONException e) { + throw new Exception("Unable to convert JSON to properties" + e.getLocalizedMessage(), e); + } + } +} diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/Parameters.java b/src/main/java/org/onap/dcae/collectors/restconf/common/Parameters.java new file mode 100755 index 0000000..02fd68b --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/Parameters.java @@ -0,0 +1,52 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.dcae.collectors.restconf.common; + +import java.util.Set; + +public class Parameters { + public String templateFileName; + public String restapiUrl; + public String restapiUser; + public String restapiPassword; + public Format format; + public String contentType; + public HttpMethod httpMethod; + public String responsePrefix; + public Set<String> listNameList; + public boolean skipSending; + public boolean convertResponse; + public String keyStoreFileName; + public String keyStorePassword; + public String trustStoreFileName; + public String trustStorePassword; + public boolean ssl; + public String customHttpHeaders; + public String partner; + public Boolean dumpHeaders; + public String requestBody; + public String oAuthConsumerKey; + public String oAuthConsumerSecret; + public String oAuthSignatureMethod; + public String oAuthVersion; + public AuthType authtype; + public Boolean returnRequestPayload; +} diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/RestConfCollector.java b/src/main/java/org/onap/dcae/collectors/restconf/common/RestConfCollector.java new file mode 100755 index 0000000..754c73d --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/RestConfCollector.java @@ -0,0 +1,66 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.dcae.collectors.restconf.common; + +import com.att.nsa.cmdLine.NsaCommandLineUtil; +import com.att.nsa.drumlin.service.framework.DrumlinServlet; +import com.att.nsa.drumlin.till.nv.impl.nvPropertiesFile; +import com.att.nsa.drumlin.till.nv.impl.nvReadableStack; +import com.att.nsa.drumlin.till.nv.impl.nvReadableTable; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.net.URL; +import java.util.Map; + +public class RestConfCollector { + + public static final Logger eplog = LoggerFactory.getLogger("org.onap.restconf.common.error"); + + public static void main(String[] args) { + try { + final Map<String, String> argMap = NsaCommandLineUtil.processCmdLine(args, true); + final String config = NsaCommandLineUtil.getSetting(argMap, Constants.KCONFIG, "collector.properties"); + final URL settingStream = DrumlinServlet.findStream(config, RestConfCollector.class); + + final nvReadableStack settings = new nvReadableStack(); + settings.push(new nvPropertiesFile(settingStream)); + settings.push(new nvReadableTable(argMap)); + + RestConfProc restConfProc = new RestConfProc(settings); + Map<String, String> paraMap = restConfProc.getParaMap(); + String restApiURL = paraMap.get(Constants.KSETTING_REST_API_URL); + String sseEventsURL = paraMap.get(Constants.KSETTING_SSE_CONNECT_URL); + String[] listRestApiURL = restApiURL.split(";"); + String[] listSseEventsURL = sseEventsURL.split(";"); + for (int i = 0; i < listRestApiURL.length; i++) { + paraMap.put(Constants.KSETTING_REST_API_URL, "http://" + listRestApiURL[i] + + "/RestConfServer/rest/operations/establish-subscription"); + paraMap.put(Constants.KSETTING_SSE_CONNECT_URL, listSseEventsURL[i]); + restConfProc.establishSubscription(paraMap, restConfProc.getCtx()); + } + + } catch (Exception e) { + RestConfCollector.eplog.error("Fatal error during application startup", e); + throw new RuntimeException(e); + } + } +} diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/RestConfContext.java b/src/main/java/org/onap/dcae/collectors/restconf/common/RestConfContext.java new file mode 100755 index 0000000..4cb16ae --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/RestConfContext.java @@ -0,0 +1,51 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.dcae.collectors.restconf.common; + +import java.util.HashMap; +import java.util.Set; + +public class RestConfContext { + private HashMap<String, String> attributes; + + public RestConfContext() { + attributes = new HashMap<>(); + } + + public String getAttribute(String name) { + return attributes.getOrDefault(name, null); + } + + public void setAttribute(String name, String value) { + if (value == null) { + if (attributes.containsKey(name)) { + attributes.remove(name); + } + } else { + attributes.put(name, value); + } + } + + public Set<String> getAttributeKeySet() { + return attributes.keySet(); + } + +} diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/RestConfProc.java b/src/main/java/org/onap/dcae/collectors/restconf/common/RestConfProc.java new file mode 100755 index 0000000..67ea1fb --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/RestConfProc.java @@ -0,0 +1,224 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.dcae.collectors.restconf.common; + +import com.att.nsa.drumlin.till.nv.rrNvReadable; +import org.glassfish.jersey.media.sse.EventSource; +import org.glassfish.jersey.media.sse.SseFeature; +import org.json.JSONArray; +import org.json.JSONObject; +import org.onap.dcae.collectors.restconf.common.event.publishing.DMaaPConfigurationParser; +import org.onap.dcae.collectors.restconf.common.event.publishing.EventPublisher; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import javax.ws.rs.client.Client; +import javax.ws.rs.client.ClientBuilder; +import javax.ws.rs.client.WebTarget; +import java.nio.file.Paths; +import java.util.HashMap; +import java.util.Map; +import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Executors; +import java.util.concurrent.LinkedBlockingQueue; + + +public class RestConfProc { + + private static final Logger log = LoggerFactory.getLogger(RestConfProc.class); + + public static String format; + + private static RestConfContext ctx = new RestConfContext(); + + private static final Logger oplog = LoggerFactory.getLogger("org.onap.restconf.common.output"); + + private Map<String, PersistentConnection> runnableInfo = new ConcurrentHashMap<>(); + + private final Map<String, String> paraMap = new HashMap<>(); + private static String cambriaConfigFile; + + public static LinkedBlockingQueue<JSONObject> fProcessingInputQueue; + + public static String streamID; + private ExecutorService executor = Executors.newCachedThreadPool(); + + public RestConfProc() { + } + + private void parseInputParameters(rrNvReadable settings) { + String tempFileName; + String restApiUrl; + String httpMetthod; + String respPrefix; + String skipSending; + String sseConnectUrl; + String[] currentConfigFile; + + currentConfigFile = settings.getStrings(Constants.KSETTING_DMAAPCONFIGS, Constants.KDEFAULT_DMAAPCONFIGS); + cambriaConfigFile = currentConfigFile[0]; + + tempFileName = settings.getString(Constants.KDEFAULT_TEMP_FILENAME, null); + restApiUrl = settings.getString(Constants.KSETTING_REST_API_URL, null); + httpMetthod = settings.getString(Constants.KSETTING_HTTP_METHOD, null); + respPrefix = settings.getString(Constants.KSETTING_RESP_PREFIX, null); + skipSending = settings.getString(Constants.KSETTING_SKIP_SENDING, null); + sseConnectUrl = settings.getString(Constants.KSETTING_SSE_CONNECT_URL, null); + format = settings.getString(Constants.KSETTING_FORMAT, null); + streamID = "route=route_failure"; + + paraMap.put(Constants.KDEFAULT_TEMP_FILENAME, tempFileName); + paraMap.put(Constants.KSETTING_REST_API_URL, restApiUrl); + paraMap.put(Constants.KSETTING_HTTP_METHOD, httpMetthod); + paraMap.put(Constants.KSETTING_RESP_PREFIX, respPrefix); + paraMap.put(Constants.KSETTING_SKIP_SENDING, skipSending); + paraMap.put(Constants.KSETTING_SSE_CONNECT_URL, sseConnectUrl); + paraMap.put(Constants.KSETTING_FORMAT, format); + + ctx.setAttribute("prop.encoding-json", "encoding-json"); + ctx.setAttribute("restapi-result.response-code", "200"); + ctx.setAttribute("restapi-result.ietf-subscribed-notifications:output.identifier", "100"); + } + + public RestConfProc(rrNvReadable settings) { + + parseInputParameters(settings); + + fProcessingInputQueue = new LinkedBlockingQueue<>(Constants.KDEFAULT_MAXQUEUEDEVENTS); + + EventProcessor ep = new EventProcessor(EventPublisher.createPublisher(oplog, + DMaaPConfigurationParser + .parseToDomainMapping(Paths.get(cambriaConfigFile)) + .get())); + ExecutorService executor = Executors.newFixedThreadPool(20); + for (int i = 0; i < 20; ++i) { + executor.execute(ep); + } + } + + /** + * To establish a subscription with controller by sending HTTP request + * + * @param paramMap holds the input configuration + * @param ctx restconf context + * @throws Exception exception + */ + public void establishSubscription(Map<String, String> paramMap, RestConfContext ctx) throws Exception { + + RestapiCallNode restApiCallNode = new RestapiCallNode(); + + restApiCallNode.sendRequest(paramMap, ctx, null); + + establishPersistentConnection(paramMap, ctx); + } + + /** + * To establish persistent connection after receiving successful subscription response from controller + * + * @param paramMap holds the input configuration + * @param ctx restconf context + */ + public void establishPersistentConnection(Map<String, String> paramMap, RestConfContext ctx) { + + // check whether response is ok + if (ctx.getAttribute(Constants.RESPONSE_CODE).equals(Constants.RESPONSE_CODE_200)) { + + String id = ctx.getAttribute(Constants.OUTPUT_IDENTIFIER); + + String url = paramMap.get(Constants.KSETTING_SSE_CONNECT_URL); + + PersistentConnection connection = new PersistentConnection(url, ctx); + runnableInfo.put(id, connection); + executor.execute(connection); + } else { + // error response is already updated in ctx + log.info("Failed to subscribe"); + } + } + + /** + * Get input parameter map + * + * @return input parameters map + */ + public Map<String, String> getParaMap() { + return paraMap; + } + + + /** + * Get restConf context which has information about message encoding type + * + * @return restconf context + */ + public RestConfContext getCtx() { + return ctx; + } + + public class PersistentConnection implements Runnable { + private String url; + private RestConfContext ctx; + private volatile boolean running = true; + + public PersistentConnection(String url, RestConfContext ctx) { + this.url = url; + this.ctx = ctx; + } + + @Override + public void run() { + Client client = ClientBuilder.newBuilder() + .register(SseFeature.class).build(); + WebTarget target = client.target(url); + EventSource eventSource = EventSource.target(target).build(); + eventSource.register(new DataChangeEventListener(ctx)); + eventSource.open(); + log.info("Connected to SSE source"); + while (running) { + try { + Thread.sleep(5000); + } catch (InterruptedException ie) { + log.info("Exception: " + ie.getMessage()); + } + } + eventSource.close(); + log.info("Closed connection to SSE source"); + } + } + + /** + * To process the array of events which are received from controller + * + * @param a JSONArray + * @throws Exception exception + */ + public static void handleEvents(JSONArray a) throws Exception { + for (int i = 0; i < a.length(); i++) { + if (!fProcessingInputQueue.offer(a.getJSONObject(i))) { + throw new Exception(); + } + } + log.debug("RestConfCollector.handleEvents:EVENTS has been published successfully!"); + } +} + + diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/RestapiCallNode.java b/src/main/java/org/onap/dcae/collectors/restconf/common/RestapiCallNode.java new file mode 100755 index 0000000..a324e87 --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/RestapiCallNode.java @@ -0,0 +1,600 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.dcae.collectors.restconf.common; + +import com.sun.jersey.api.client.Client; +import com.sun.jersey.api.client.ClientHandlerException; +import com.sun.jersey.api.client.ClientResponse; +import com.sun.jersey.api.client.UniformInterfaceException; +import com.sun.jersey.api.client.WebResource; +import com.sun.jersey.api.client.config.ClientConfig; +import com.sun.jersey.api.client.config.DefaultClientConfig; +import com.sun.jersey.api.client.filter.HTTPBasicAuthFilter; +import com.sun.jersey.api.client.filter.HTTPDigestAuthFilter; +import com.sun.jersey.client.urlconnection.HTTPSProperties; +import com.sun.jersey.oauth.client.OAuthClientFilter; +import com.sun.jersey.oauth.signature.OAuthParameters; +import com.sun.jersey.oauth.signature.OAuthSecrets; +import org.apache.commons.lang3.StringUtils; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import javax.net.ssl.HostnameVerifier; +import javax.net.ssl.HttpsURLConnection; +import javax.net.ssl.KeyManagerFactory; +import javax.net.ssl.SSLContext; +import javax.ws.rs.core.EntityTag; +import javax.ws.rs.core.MultivaluedMap; +import javax.ws.rs.core.UriBuilder; +import java.io.FileInputStream; +import java.io.IOException; +import java.net.SocketException; +import java.net.URI; +import java.nio.file.Files; +import java.nio.file.Paths; +import java.security.KeyStore; +import java.util.ArrayList; +import java.util.Collections; +import java.util.HashMap; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Set; + +public class RestapiCallNode { + private static final Logger log = LoggerFactory.getLogger(RestapiCallNode.class); + + public void sendRequest(Map<String, String> paramMap, RestConfContext ctx, Integer retryCount) throws Exception { + RetryPolicy retryPolicy = null; + HttpResponse r = new HttpResponse(); + try { + Parameters p = getParameters(paramMap); + String pp = p.responsePrefix != null ? p.responsePrefix + '.' : ""; + String req = null; + if (p.templateFileName != null) { + String reqTemplate = readFile(p.templateFileName); + req = buildXmlJsonRequest(ctx, reqTemplate, p.format); + } else if (p.requestBody != null) { + req = p.requestBody; + } + + r = sendHttpRequest(req, p); + setResponseStatus(ctx, p.responsePrefix, r); + + if (p.dumpHeaders && r.headers != null) { + for (Map.Entry<String, List<String>> a : r.headers.entrySet()) { + ctx.setAttribute(pp + "header." + a.getKey(), StringUtils.join(a.getValue(), ",")); + } + } + + if (p.returnRequestPayload && req != null) { + ctx.setAttribute(pp + "httpRequest", req); + } + + if (r.body != null && r.body.trim().length() > 0) { + ctx.setAttribute(pp + "httpResponse", r.body); + + if (p.convertResponse) { + Map<String, String> mm = null; + if (p.format == Format.XML) { + mm = XmlParser.convertToProperties(r.body, p.listNameList); + } else if (p.format == Format.JSON) { + mm = JsonParser.convertToProperties(r.body); + } + + if (mm != null) { + for (Map.Entry<String, String> entry : mm.entrySet()) + ctx.setAttribute(pp + entry.getKey(), entry.getValue()); + } + } + } + } catch (Exception e) { + boolean shouldRetry = false; + if (e.getCause().getCause() instanceof SocketException) { + shouldRetry = true; + } + + log.error("Error sending the request: " + e.getMessage(), e); + String prefix = parseParam(paramMap, "responsePrefix", false, null); + if (retryPolicy == null || shouldRetry == false) { + setFailureResponseStatus(ctx, prefix, e.getMessage(), r); + } else { + if (retryCount == null) { + retryCount = 0; + } + String retryMessage = retryCount + " attempts were made out of " + retryPolicy.getMaximumRetries() + + " maximum retries."; + log.debug(retryMessage); + try { + retryCount = retryCount + 1; + if (retryCount < retryPolicy.getMaximumRetries() + 1) { + URI uri = new URI(paramMap.get("restapiUrl")); + String hostname = uri.getHost(); + String retryString = retryPolicy.getNextHostName(uri.toString()); + URI uriTwo = new URI(retryString); + URI retryUri = UriBuilder.fromUri(uri).host(uriTwo.getHost()).port(uriTwo.getPort()).scheme( + uriTwo.getScheme()).build(); + paramMap.put("restapiUrl", retryUri.toString()); + log.debug("URL was set to {}", retryUri.toString()); + log.debug("Failed to communicate with host {}. Request will be re-attempted using the host {}.", + hostname, retryString); + log.debug("This is retry attempt {} out of {}", retryCount, retryPolicy.getMaximumRetries()); + sendRequest(paramMap, ctx, retryCount); + } else { + log.debug("Maximum retries reached, calling setFailureResponseStatus."); + setFailureResponseStatus(ctx, prefix, e.getMessage(), r); + } + } catch (Exception ex) { + log.error("Could not attempt retry.", ex); + String retryErrorMessage = + "Retry attempt has failed. No further retry shall be attempted, calling " + + "setFailureResponseStatus."; + setFailureResponseStatus(ctx, prefix, retryErrorMessage, r); + } + } + } + + if (r != null && r.code >= 300) { + throw new Exception(String.valueOf(r.code) + ": " + r.message); + } + } + + protected Parameters getParameters(Map<String, String> paramMap) throws Exception { + Parameters p = new Parameters(); + p.templateFileName = parseParam(paramMap, "templateFileName", false, null); + p.requestBody = parseParam(paramMap, "requestBody", false, null); + p.restapiUrl = parseParam(paramMap, "restapiUrl", true, null); + validateUrl(p.restapiUrl); + p.restapiUser = parseParam(paramMap, "restapiUser", false, null); + p.restapiPassword = parseParam(paramMap, "restapiPassword", false, null); + p.oAuthConsumerKey = parseParam(paramMap, "oAuthConsumerKey", false, null); + p.oAuthConsumerSecret = parseParam(paramMap, "oAuthConsumerSecret", false, null); + p.oAuthSignatureMethod = parseParam(paramMap, "oAuthSignatureMethod", false, null); + p.oAuthVersion = parseParam(paramMap, "oAuthVersion", false, null); + p.contentType = parseParam(paramMap, "contentType", false, null); + p.format = Format.fromString(parseParam(paramMap, "format", false, "json")); + p.authtype = AuthType.fromString(parseParam(paramMap, "authType", false, "unspecified")); + p.httpMethod = HttpMethod.fromString(parseParam(paramMap, "httpMethod", false, "post")); + p.responsePrefix = parseParam(paramMap, "responsePrefix", false, null); + p.listNameList = getListNameList(paramMap); + String skipSendingStr = paramMap.get("skipSending"); + p.skipSending = "true".equalsIgnoreCase(skipSendingStr); + p.convertResponse = Boolean.valueOf(parseParam(paramMap, "convertResponse", false, "true")); + p.trustStoreFileName = parseParam(paramMap, "trustStoreFileName", false, null); + p.trustStorePassword = parseParam(paramMap, "trustStorePassword", false, null); + p.keyStoreFileName = parseParam(paramMap, "keyStoreFileName", false, null); + p.keyStorePassword = parseParam(paramMap, "keyStorePassword", false, null); + p.ssl = p.trustStoreFileName != null && p.trustStorePassword != null && p.keyStoreFileName != null && + p.keyStorePassword != null; + p.customHttpHeaders = parseParam(paramMap, "customHttpHeaders", false, null); + p.partner = parseParam(paramMap, "partner", false, null); + p.dumpHeaders = Boolean.valueOf(parseParam(paramMap, "dumpHeaders", false, null)); + p.returnRequestPayload = Boolean.valueOf(parseParam(paramMap, "returnRequestPayload", false, null)); + return p; + } + + private void validateUrl(String restapiUrl) throws Exception { + try { + URI.create(restapiUrl); + } catch (IllegalArgumentException e) { + throw new Exception("Invalid input of url " + e.getLocalizedMessage(), e); + } + } + + protected Set<String> getListNameList(Map<String, String> paramMap) { + Set<String> ll = new HashSet<>(); + for (Map.Entry<String, String> entry : paramMap.entrySet()) + if (entry.getKey().startsWith("listName")) { + ll.add(entry.getValue()); + } + return ll; + } + + protected String parseParam(Map<String, String> paramMap, String name, boolean required, String def) + throws Exception { + String s = paramMap.get(name); + + if (s == null || s.trim().length() == 0) { + if (!required) { + return def; + } + throw new Exception("Parameter " + name + " is required in RestapiCallNode"); + } + + s = s.trim(); + StringBuilder value = new StringBuilder(); + int i = 0; + int i1 = s.indexOf('%'); + while (i1 >= 0) { + int i2 = s.indexOf('%', i1 + 1); + if (i2 < 0) { + break; + } + + String varName = s.substring(i1 + 1, i2); + String varValue = System.getenv(varName); + if (varValue == null) { + varValue = "%" + varName + "%"; + } + + value.append(s.substring(i, i1)); + value.append(varValue); + + i = i2 + 1; + i1 = s.indexOf('%', i); + } + value.append(s.substring(i)); + + log.info("Parameter {}: [{}]", name, value); + return value.toString(); + } + + protected String buildXmlJsonRequest(RestConfContext ctx, String template, Format format) throws Exception { + log.info("Building {} started", format); + long t1 = System.currentTimeMillis(); + + template = expandRepeats(ctx, template, 1); + + Map<String, String> mm = new HashMap<>(); + for (String s : ctx.getAttributeKeySet()) + mm.put(s, ctx.getAttribute(s)); + StringBuilder ss = new StringBuilder(); + int i = 0; + while (i < template.length()) { + int i1 = template.indexOf("${", i); + if (i1 < 0) { + ss.append(template.substring(i)); + break; + } + + int i2 = template.indexOf('}', i1 + 2); + if (i2 < 0) { + throw new Exception("Template error: Matching } not found"); + } + + String var1 = template.substring(i1 + 2, i2); + String value1 = format == Format.XML ? XmlJsonUtil.getXml(mm, var1) : XmlJsonUtil.getJson(mm, var1); + // log.info(" " + var1 + ": " + value1); + if (value1 == null || value1.trim().length() == 0) { + // delete the whole element (line) + int i3 = template.lastIndexOf('\n', i1); + if (i3 < 0) { + i3 = 0; + } + int i4 = template.indexOf('\n', i1); + if (i4 < 0) { + i4 = template.length(); + } + + if (i < i3) { + ss.append(template.substring(i, i3)); + } + i = i4; + } else { + ss.append(template.substring(i, i1)).append(value1); + i = i2 + 1; + } + } + + String req = format == Format.XML + ? XmlJsonUtil.removeEmptyStructXml(ss.toString()) : XmlJsonUtil.removeEmptyStructJson(ss.toString()); + + if (format == Format.JSON) { + req = XmlJsonUtil.removeLastCommaJson(req); + } + + long t2 = System.currentTimeMillis(); + log.info("Building {} completed. Time: {}", format, (t2 - t1)); + + return req; + } + + protected String expandRepeats(RestConfContext ctx, String template, int level) throws Exception { + StringBuilder newTemplate = new StringBuilder(); + int k = 0; + while (k < template.length()) { + int i1 = template.indexOf("${repeat:", k); + if (i1 < 0) { + newTemplate.append(template.substring(k)); + break; + } + + int i2 = template.indexOf(':', i1 + 9); + if (i2 < 0) { + throw new Exception( + "Template error: Context variable name followed by : is required after repeat"); + } + + // Find the closing }, store in i3 + int nn = 1; + int i3 = -1; + int i = i2; + while (nn > 0 && i < template.length()) { + i3 = template.indexOf('}', i); + if (i3 < 0) { + throw new Exception("Template error: Matching } not found"); + } + int i32 = template.indexOf('{', i); + if (i32 >= 0 && i32 < i3) { + nn++; + i = i32 + 1; + } else { + nn--; + i = i3 + 1; + } + } + + String var1 = template.substring(i1 + 9, i2); + String value1 = ctx.getAttribute(var1); + log.info(" {}:{}", var1, value1); + int n = 0; + try { + n = Integer.parseInt(value1); + } catch (NumberFormatException e) { + log.info("value1 not set or not a number, n will remain set at zero"); + } + + newTemplate.append(template.substring(k, i1)); + + String rpt = template.substring(i2 + 1, i3); + + for (int ii = 0; ii < n; ii++) { + String ss = rpt.replaceAll("\\[\\$\\{" + level + "\\}\\]", "[" + ii + "]"); + if (ii == n - 1 && ss.trim().endsWith(",")) { + int i4 = ss.lastIndexOf(','); + if (i4 > 0) { + ss = ss.substring(0, i4) + ss.substring(i4 + 1); + } + } + newTemplate.append(ss); + } + + k = i3 + 1; + } + + if (k == 0) { + return newTemplate.toString(); + } + + return expandRepeats(ctx, newTemplate.toString(), level + 1); + } + + protected String readFile(String fileName) throws Exception { + try { + byte[] encoded = Files.readAllBytes(Paths.get(fileName)); + return new String(encoded, "UTF-8"); + } catch (IOException | SecurityException e) { + throw new Exception("Unable to read file " + fileName + e.getLocalizedMessage(), e); + } + } + + protected Client addAuthType(Client client, Parameters p) throws Exception { + if (p.authtype == AuthType.Unspecified) { + if (p.restapiUser != null && p.restapiPassword != null) { + client.addFilter(new HTTPBasicAuthFilter(p.restapiUser, p.restapiPassword)); + } else if (p.oAuthConsumerKey != null && p.oAuthConsumerSecret != null + && p.oAuthSignatureMethod != null) { + OAuthParameters params = new OAuthParameters() + .signatureMethod(p.oAuthSignatureMethod) + .consumerKey(p.oAuthConsumerKey) + .version(p.oAuthVersion); + + OAuthSecrets secrets = new OAuthSecrets() + .consumerSecret(p.oAuthConsumerSecret); + client.addFilter(new OAuthClientFilter(client.getProviders(), params, secrets)); + } + } else { + if (p.authtype == AuthType.DIGEST) { + if (p.restapiUser != null && p.restapiPassword != null) { + client.addFilter(new HTTPDigestAuthFilter(p.restapiUser, p.restapiPassword)); + } else { + throw new Exception("oAUTH authentication type selected but all restapiUser and restapiPassword " + + "parameters doesn't exist", new Throwable()); + } + } else if (p.authtype == AuthType.BASIC) { + if (p.restapiUser != null && p.restapiPassword != null) { + client.addFilter(new HTTPBasicAuthFilter(p.restapiUser, p.restapiPassword)); + } else { + throw new Exception("oAUTH authentication type selected but all restapiUser and restapiPassword " + + "parameters doesn't exist", new Throwable()); + } + } else if (p.authtype == AuthType.OAUTH) { + if (p.oAuthConsumerKey != null && p.oAuthConsumerSecret != null && p.oAuthSignatureMethod != null) { + OAuthParameters params = new OAuthParameters() + .signatureMethod(p.oAuthSignatureMethod) + .consumerKey(p.oAuthConsumerKey) + .version(p.oAuthVersion); + + OAuthSecrets secrets = new OAuthSecrets() + .consumerSecret(p.oAuthConsumerSecret); + client.addFilter(new OAuthClientFilter(client.getProviders(), params, secrets)); + } else { + throw new Exception("oAUTH authentication type selected but all oAuthConsumerKey, oAuthConsumerSecret " + + "and oAuthSignatureMethod parameters doesn't exist", new Throwable()); + } + } + } + return client; + } + + protected HttpResponse sendHttpRequest(String request, Parameters p) throws Exception { + + ClientConfig config = new DefaultClientConfig(); + SSLContext ssl = null; + if (p.ssl && p.restapiUrl.startsWith("https")) { + ssl = createSSLContext(p); + } + if (ssl != null) { + HostnameVerifier hostnameVerifier = (hostname, session) -> true; + + config.getProperties().put(HTTPSProperties.PROPERTY_HTTPS_PROPERTIES, + new HTTPSProperties(hostnameVerifier, ssl)); + } + + logProperties(config.getProperties()); + + Client client = Client.create(config); + client.setConnectTimeout(5000); + WebResource webResource = addAuthType(client, p).resource(p.restapiUrl); + + log.info("Sending request:"); + log.info(request); + long t1 = System.currentTimeMillis(); + + HttpResponse r = new HttpResponse(); + r.code = 200; + + if (!p.skipSending) { + String tt = p.format == Format.XML ? "application/xml" : "application/json"; + String tt1 = tt + ";charset=UTF-8"; + if (p.contentType != null) { + tt = p.contentType; + tt1 = p.contentType; + } + + WebResource.Builder webResourceBuilder = webResource.accept(tt).type(tt1); + if (p.format == Format.NONE) { + webResourceBuilder = webResource.header("", ""); + } + + if (p.customHttpHeaders != null && p.customHttpHeaders.length() > 0) { + String[] keyValuePairs = p.customHttpHeaders.split(","); + for (String singlePair : keyValuePairs) { + int equalPosition = singlePair.indexOf('='); + webResourceBuilder.header(singlePair.substring(0, equalPosition), + singlePair.substring(equalPosition + 1, singlePair.length())); + } + } + + webResourceBuilder.header("X-ECOMP-RequestID", org.slf4j.MDC.get("X-ECOMP-RequestID")); + + ClientResponse response; + + try { + response = webResourceBuilder.method(p.httpMethod.toString(), ClientResponse.class, request); + } catch (UniformInterfaceException | ClientHandlerException e) { + throw new Exception("Exception while sending http request to client " + + e.getLocalizedMessage(), e); + } + + r.code = response.getStatus(); + r.headers = response.getHeaders(); + EntityTag etag = response.getEntityTag(); + if (etag != null) { + r.message = etag.getValue(); + } + if (response.hasEntity() && r.code != 204) { + r.body = response.getEntity(String.class); + } + } + + long t2 = System.currentTimeMillis(); + log.info("Response received. Time: {}", (t2 - t1)); + log.info("HTTP response code: {}", r.code); + log.info("HTTP response message: {}", r.message); + logHeaders(r.headers); + log.info("HTTP response: {}", r.body); + + return r; + } + + protected void setFailureResponseStatus(RestConfContext ctx, String prefix, String errorMessage, + HttpResponse resp) { + resp.code = 500; + resp.message = errorMessage; + String pp = prefix != null ? prefix + '.' : ""; + ctx.setAttribute(pp + "response-code", String.valueOf(resp.code)); + ctx.setAttribute(pp + "response-message", resp.message); + } + + protected void setResponseStatus(RestConfContext ctx, String prefix, HttpResponse r) { + String pp = prefix != null ? prefix + '.' : ""; + ctx.setAttribute(pp + "response-code", String.valueOf(r.code)); + ctx.setAttribute(pp + "response-message", r.message); + } + + protected SSLContext createSSLContext(Parameters p) { + try (FileInputStream in = new FileInputStream(p.keyStoreFileName)) { + System.setProperty("jsse.enableSNIExtension", "false"); + System.setProperty("javax.net.ssl.trustStore", p.trustStoreFileName); + System.setProperty("javax.net.ssl.trustStorePassword", p.trustStorePassword); + + HttpsURLConnection.setDefaultHostnameVerifier((string, ssls) -> true); + + KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm()); + KeyStore ks = KeyStore.getInstance("PKCS12"); + char[] pwd = p.keyStorePassword.toCharArray(); + ks.load(in, pwd); + kmf.init(ks, pwd); + + SSLContext ctx = SSLContext.getInstance("TLS"); + ctx.init(kmf.getKeyManagers(), null, null); + return ctx; + } catch (Exception e) { + log.error("Error creating SSLContext: {}", e.getMessage(), e); + } + return null; + } + + protected void logProperties(Map<String, Object> mm) { + List<String> ll = new ArrayList<>(); + for (Object o : mm.keySet()) + ll.add((String) o); + Collections.sort(ll); + + log.info("Properties:"); + for (String name : ll) + log.info("--- {}:{}", name, String.valueOf(mm.get(name))); + } + + protected void logHeaders(MultivaluedMap<String, String> mm) { + log.info("HTTP response headers:"); + + if (mm == null) { + return; + } + + List<String> ll = new ArrayList<>(); + for (Object o : mm.keySet()) + ll.add((String) o); + Collections.sort(ll); + + for (String name : ll) + log.info("--- {}:{}", name, String.valueOf(mm.get(name))); + } + + private static class FileParam { + + public String fileName; + public String url; + public String user; + public String password; + public HttpMethod httpMethod; + public String responsePrefix; + public boolean skipSending; + public String oAuthConsumerKey; + public String oAuthConsumerSecret; + public String oAuthSignatureMethod; + public String oAuthVersion; + public AuthType authtype; + } + +}
\ No newline at end of file diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/RetryException.java b/src/main/java/org/onap/dcae/collectors/restconf/common/RetryException.java new file mode 100755 index 0000000..91c0a9c --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/RetryException.java @@ -0,0 +1,27 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.dcae.collectors.restconf.common; + +public class RetryException extends Exception { + public RetryException(String message) { + super(message); + } +} diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/RetryPolicy.java b/src/main/java/org/onap/dcae/collectors/restconf/common/RetryPolicy.java new file mode 100755 index 0000000..7bc0759 --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/RetryPolicy.java @@ -0,0 +1,58 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.dcae.collectors.restconf.common; + +public class RetryPolicy { + private String[] hostnames; + private Integer maximumRetries; + + public Integer getMaximumRetries() { + return maximumRetries; + } + + public String getNextHostName(String uri) throws RetryException { + Integer position = null; + + for (int i = 0; i < hostnames.length; i++) { + if (uri.contains(hostnames[i])) { + position = i; + break; + } + } + + if (position == null) { + throw new RetryException("No match found for the provided uri[" + uri + "] " + + "so the next host name could not be retreived"); + } + position++; + + if (position > hostnames.length - 1) { + position = 0; + } + return hostnames[position]; + } + + public RetryPolicy(String[] hostnames, Integer maximumRetries) { + this.hostnames = hostnames; + this.maximumRetries = maximumRetries; + } + +} diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/RetryPolicyStore.java b/src/main/java/org/onap/dcae/collectors/restconf/common/RetryPolicyStore.java new file mode 100755 index 0000000..10b0e00 --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/RetryPolicyStore.java @@ -0,0 +1,53 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.dcae.collectors.restconf.common; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.util.HashMap; + +public class RetryPolicyStore { + private static final Logger log = LoggerFactory.getLogger(RetryPolicyStore.class); + + HashMap<String, RetryPolicy> retryPolicies; + public String proxyServers; + + public String getProxyServers() { + return proxyServers; + } + + public void setProxyServers(String admServers) { + this.proxyServers = admServers; + String[] adminServersArray = admServers.split(","); + RetryPolicy adminPortalRetry = new RetryPolicy(adminServersArray, adminServersArray.length); + retryPolicies.put("dme2proxy", adminPortalRetry); + } + + public RetryPolicyStore() { + retryPolicies = new HashMap<>(); + } + + public RetryPolicy getRetryPolicy(String policyName) { + return (this.retryPolicies.get(policyName)); + } + +} diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/XmlJsonUtil.java b/src/main/java/org/onap/dcae/collectors/restconf/common/XmlJsonUtil.java new file mode 100755 index 0000000..382ef4d --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/XmlJsonUtil.java @@ -0,0 +1,412 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.dcae.collectors.restconf.common; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.util.ArrayList; +import java.util.HashMap; +import java.util.List; +import java.util.Map; + +public class XmlJsonUtil { + + private static final Logger log = LoggerFactory.getLogger(XmlJsonUtil.class); + + private XmlJsonUtil() { + // Preventing instantiation of the same. + } + + public static String getXml(Map<String, String> varmap, String var) { + boolean escape = true; + if (var.startsWith("'")) { + var = var.substring(1); + escape = false; + } + + Object o = createStructure(varmap, var); + return generateXml(o, 0, escape); + } + + public static String getJson(Map<String, String> varmap, String var) { + boolean escape = true; + if (var.startsWith("'")) { + var = var.substring(1); + escape = false; + } + + boolean quotes = true; + if (var.startsWith("\"")) { + var = var.substring(1); + quotes = false; + } + + Object o = createStructure(varmap, var); + return generateJson(o, escape, quotes); + } + + private static Object createStructure(Map<String, String> flatmap, String var) { + if (flatmap.containsKey(var)) { + if (var.endsWith("_length") || var.endsWith("].key")) { + return null; + } + return flatmap.get(var); + } + + Map<String, Object> mm = new HashMap<>(); + for (String k : flatmap.keySet()) + if (k.startsWith(var + ".")) { + int i1 = k.indexOf('.', var.length() + 1); + int i2 = k.indexOf('[', var.length() + 1); + int i3 = k.length(); + if (i1 > 0 && i1 < i3) { + i3 = i1; + } + if (i2 > 0 && i2 < i3) { + i3 = i2; + } + String k1 = k.substring(var.length() + 1, i3); + String var1 = k.substring(0, i3); + if (!mm.containsKey(k1)) { + Object str = createStructure(flatmap, var1); + if (str != null && (!(str instanceof String) || ((String) str).trim().length() > 0)) { + mm.put(k1, str); + } + } + } + if (!mm.isEmpty()) { + return mm; + } + + boolean arrayFound = false; + for (String k : flatmap.keySet()) + if (k.startsWith(var + "[")) { + arrayFound = true; + break; + } + + if (arrayFound) { + List<Object> ll = new ArrayList<>(); + + int length = Integer.MAX_VALUE; + String lengthStr = flatmap.get(var + "_length"); + if (lengthStr != null) { + try { + length = Integer.parseInt(lengthStr); + } catch (Exception e) { + log.warn("Invalid number for {}_length:{}", var, lengthStr, e); + } + } + + for (int i = 0; i < length; i++) { + Object v = createStructure(flatmap, var + '[' + i + ']'); + if (v == null) { + break; + } + ll.add(v); + } + + if (!ll.isEmpty()) { + return ll; + } + } + + return null; + } + + @SuppressWarnings("unchecked") + private static String generateXml(Object o, int indent, boolean escape) { + if (o == null) { + return null; + } + + if (o instanceof String) { + return escape ? escapeXml((String) o) : (String) o; + } + ; + + if (o instanceof Map) { + StringBuilder ss = new StringBuilder(); + Map<String, Object> mm = (Map<String, Object>) o; + for (Map.Entry<String, Object> entry : mm.entrySet()) { + Object v = entry.getValue(); + String key = entry.getKey(); + if (v instanceof String) { + String s = escape ? escapeXml((String) v) : (String) v; + ss.append(pad(indent)).append('<').append(key).append('>'); + ss.append(s); + ss.append("</").append(key).append('>').append('\n'); + } else if (v instanceof Map) { + ss.append(pad(indent)).append('<').append(key).append('>').append('\n'); + ss.append(generateXml(v, indent + 1, escape)); + ss.append(pad(indent)).append("</").append(key).append('>').append('\n'); + } else if (v instanceof List) { + List<Object> ll = (List<Object>) v; + for (Object o1 : ll) { + ss.append(pad(indent)).append('<').append(key).append('>').append('\n'); + ss.append(generateXml(o1, indent + 1, escape)); + ss.append(pad(indent)).append("</").append(key).append('>').append('\n'); + } + } + } + return ss.toString(); + } + + return null; + } + + private static String generateJson(Object o, boolean escape, boolean quotes) { + if (o == null) { + return null; + } + + StringBuilder ss = new StringBuilder(); + generateJson(ss, o, 0, false, escape, quotes); + return ss.toString(); + } + + @SuppressWarnings("unchecked") + private static void generateJson(StringBuilder ss, Object o, int indent, boolean padFirst, boolean escape, boolean quotes) { + if (o instanceof String) { + String s = escape ? escapeJson((String) o) : (String) o; + if (padFirst) { + ss.append(pad(indent)); + } + if (quotes) { + ss.append('"').append(s).append('"'); + } else { + ss.append(s); + } + return; + } + + if (o instanceof Map) { + Map<String, Object> mm = (Map<String, Object>) o; + + if (padFirst) { + ss.append(pad(indent)); + } + ss.append("{\n"); + + boolean first = true; + for (Map.Entry<String, Object> entry : mm.entrySet()) { + if (!first) { + ss.append(",\n"); + } + first = false; + Object v = entry.getValue(); + String key = entry.getKey(); + ss.append(pad(indent + 1)).append('"').append(key).append("\": "); + generateJson(ss, v, indent + 1, false, escape, true); + } + + ss.append("\n"); + ss.append(pad(indent)).append('}'); + + return; + } + + if (o instanceof List) { + List<Object> ll = (List<Object>) o; + + if (padFirst) { + ss.append(pad(indent)); + } + ss.append("[\n"); + + boolean first = true; + for (Object o1 : ll) { + if (!first) { + ss.append(",\n"); + } + first = false; + + generateJson(ss, o1, indent + 1, true, escape, quotes); + } + + ss.append("\n"); + ss.append(pad(indent)).append(']'); + } + } + + public static String removeLastCommaJson(String s) { + StringBuilder sb = new StringBuilder(); + int k = 0; + int start = 0; + while (k < s.length()) { + int i11 = s.indexOf('}', k); + int i12 = s.indexOf(']', k); + int i1 = -1; + if (i11 < 0) { + i1 = i12; + } else if (i12 < 0) { + i1 = i11; + } else { + i1 = i11 < i12 ? i11 : i12; + } + if (i1 < 0) { + break; + } + + int i2 = s.lastIndexOf(',', i1); + if (i2 < 0) { + k = i1 + 1; + continue; + } + + String between = s.substring(i2 + 1, i1); + if (between.trim().length() > 0) { + k = i1 + 1; + continue; + } + + sb.append(s.substring(start, i2)); + start = i2 + 1; + k = i1 + 1; + } + + sb.append(s.substring(start, s.length())); + + return sb.toString(); + } + + public static String removeEmptyStructJson(String s) { + int k = 0; + while (k < s.length()) { + boolean curly = true; + int i11 = s.indexOf('{', k); + int i12 = s.indexOf('[', k); + int i1 = -1; + if (i11 < 0) { + i1 = i12; + curly = false; + } else if (i12 < 0) { + i1 = i11; + } else if (i11 < i12) { + i1 = i11; + } else { + i1 = i12; + curly = false; + } + + if (i1 >= 0) { + int i2 = curly ? s.indexOf('}', i1) : s.indexOf(']', i1); + if (i2 > 0) { + String value = s.substring(i1 + 1, i2); + if (value.trim().length() == 0) { + int i4 = s.lastIndexOf('\n', i1); + if (i4 < 0) { + i4 = 0; + } + int i5 = s.indexOf('\n', i2); + if (i5 < 0) { + i5 = s.length(); + } + + s = s.substring(0, i4) + s.substring(i5); + k = 0; + } else { + k = i1 + 1; + } + } else { + break; + } + } else { + break; + } + } + + return s; + } + + public static String removeEmptyStructXml(String s) { + int k = 0; + while (k < s.length()) { + int i1 = s.indexOf('<', k); + if (i1 < 0 || i1 == s.length() - 1) { + break; + } + + char c1 = s.charAt(i1 + 1); + if (c1 == '?' || c1 == '!') { + k = i1 + 2; + continue; + } + + int i2 = s.indexOf('>', i1); + if (i2 < 0) { + k = i1 + 1; + continue; + } + + String closingTag = "</" + s.substring(i1 + 1, i2 + 1); + int i3 = s.indexOf(closingTag, i2 + 1); + if (i3 < 0) { + k = i2 + 1; + continue; + } + + String value = s.substring(i2 + 1, i3); + if (value.trim().length() > 0) { + k = i2 + 1; + continue; + } + + int i4 = s.lastIndexOf('\n', i1); + if (i4 < 0) { + i4 = 0; + } + int i5 = s.indexOf('\n', i3); + if (i5 < 0) { + i5 = s.length(); + } + + s = s.substring(0, i4) + s.substring(i5); + k = 0; + } + + return s; + } + + private static String escapeXml(String v) { + String s = v.replaceAll("&", "&"); + s = s.replaceAll("<", "<"); + s = s.replaceAll("'", "'"); + s = s.replaceAll("\"", """); + s = s.replaceAll(">", ">"); + return s; + } + + private static String escapeJson(String v) { + String s = v.replaceAll("\\\\", "\\\\\\\\"); + s = s.replaceAll("\"", "\\\\\""); + return s; + } + + private static String pad(int n) { + StringBuilder s = new StringBuilder(); + for (int i = 0; i < n; i++) + s.append(Character.toString('\t')); + return s.toString(); + } +} + diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/XmlParser.java b/src/main/java/org/onap/dcae/collectors/restconf/common/XmlParser.java new file mode 100755 index 0000000..e073cd6 --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/XmlParser.java @@ -0,0 +1,178 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.dcae.collectors.restconf.common; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import org.xml.sax.Attributes; +import org.xml.sax.SAXException; +import org.xml.sax.helpers.DefaultHandler; + +import javax.xml.parsers.ParserConfigurationException; +import javax.xml.parsers.SAXParser; +import javax.xml.parsers.SAXParserFactory; +import java.io.ByteArrayInputStream; +import java.io.IOException; +import java.io.InputStream; +import java.util.HashMap; +import java.util.HashSet; +import java.util.Map; +import java.util.Set; + +import static com.google.common.base.Preconditions.checkNotNull; + +public class XmlParser { + + private static final Logger log = LoggerFactory.getLogger(XmlParser.class); + + private XmlParser() { + // Preventing instantiation of the same. + } + + public static Map<String, String> convertToProperties(String s, Set<String> listNameList) + throws Exception { + + checkNotNull(s, "Input should not be null."); + + Handler handler = new Handler(listNameList); + try { + SAXParserFactory factory = SAXParserFactory.newInstance(); + SAXParser saxParser = factory.newSAXParser(); + InputStream in = new ByteArrayInputStream(s.getBytes()); + saxParser.parse(in, handler); + } catch (ParserConfigurationException | IOException | SAXException | NumberFormatException e) { + throw new Exception("Unable to convert XML to properties" + e.getLocalizedMessage(), e); + } + return handler.getProperties(); + } + + private static class Handler extends DefaultHandler { + + private Set<String> listNameList; + + private Map<String, String> properties = new HashMap<>(); + + public Map<String, String> getProperties() { + return properties; + } + + public Handler(Set<String> listNameList) { + super(); + this.listNameList = listNameList; + if (this.listNameList == null) { + this.listNameList = new HashSet<>(); + } + } + + StringBuilder currentName = new StringBuilder(); + StringBuilder currentValue = new StringBuilder(); + + @Override + public void startElement(String uri, String localName, String qName, Attributes attributes) + throws SAXException { + super.startElement(uri, localName, qName, attributes); + + String name = localName; + if (name == null || name.trim().length() == 0) { + name = qName; + } + int i2 = name.indexOf(':'); + if (i2 >= 0) { + name = name.substring(i2 + 1); + } + + if (currentName.length() > 0) { + currentName.append(Character.toString('.')); + } + currentName.append(name); + + String listName = removeIndexes(currentName.toString()); + + if (listNameList.contains(listName)) { + String n = currentName.toString() + "_length"; + int len = getInt(properties, n); + properties.put(n, String.valueOf(len + 1)); + currentName.append("[").append(len).append("]"); + } + } + + @Override + public void endElement(String uri, String localName, String qName) throws SAXException { + super.endElement(uri, localName, qName); + + String name = localName; + if (name == null || name.trim().length() == 0) { + name = qName; + } + int i2 = name.indexOf(':'); + if (i2 >= 0) { + name = name.substring(i2 + 1); + } + + String s = currentValue.toString().trim(); + if (s.length() > 0) { + properties.put(currentName.toString(), s); + + log.info("Added property: {} : {}", currentName, s); + currentValue = new StringBuilder(); + } + + int i1 = currentName.lastIndexOf("." + name); + if (i1 <= 0) { + currentName = new StringBuilder(); + } else { + currentName = new StringBuilder(currentName.substring(0, i1)); + } + } + + @Override + public void characters(char[] ch, int start, int length) throws SAXException { + super.characters(ch, start, length); + + String value = new String(ch, start, length); + currentValue.append(value); + } + + private static int getInt(Map<String, String> mm, String name) { + String s = mm.get(name); + if (s == null) { + return 0; + } + return Integer.parseInt(s); + } + + private String removeIndexes(String currentName) { + StringBuilder b = new StringBuilder(); + boolean add = true; + for (int i = 0; i < currentName.length(); i++) { + char c = currentName.charAt(i); + if (c == '[') { + add = false; + } else if (c == ']') { + add = true; + } else if (add) { + b.append(Character.toString(c)); + } + } + return b.toString(); + } + } +} diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/event/publishing/DMaaPConfigurationParser.java b/src/main/java/org/onap/dcae/collectors/restconf/common/event/publishing/DMaaPConfigurationParser.java new file mode 100755 index 0000000..04271e4 --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/event/publishing/DMaaPConfigurationParser.java @@ -0,0 +1,107 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.dcae.collectors.restconf.common.event.publishing; + +import io.vavr.collection.List; +import io.vavr.collection.Map; +import io.vavr.control.Option; +import io.vavr.control.Try; +import org.onap.dcae.collectors.restconf.common.AnyNode; + +import java.net.URL; +import java.nio.file.Files; +import java.nio.file.Path; + +import static io.vavr.API.List; +import static io.vavr.API.Try; +import static io.vavr.API.Tuple; +import static io.vavr.API.unchecked; +import static org.onap.dcae.collectors.restconf.common.event.publishing.VavrUtils.enhanceError; +import static org.onap.dcae.collectors.restconf.common.event.publishing.VavrUtils.f; + +public class DMaaPConfigurationParser { + + public static Try<Map<String, PublisherConfig>> parseToDomainMapping(Path configLocation) { + return readFromFile(configLocation) + .flatMap(DMaaPConfigurationParser::toJSON) + .flatMap(DMaaPConfigurationParser::toConfigMap); + } + + private static Try<String> readFromFile(Path configLocation) { + return Try(() -> new String(Files.readAllBytes(configLocation))) + .mapFailure(enhanceError(f("Could not read DMaaP configuration from location: '%s'", configLocation))); + } + + private static Try<AnyNode> toJSON(String config) { + return Try(() -> AnyNode.fromString(config)) + .mapFailure(enhanceError(f("DMaaP configuration '%s' is not a valid JSON document", config))); + } + + private static Try<Map<String, PublisherConfig>> toConfigMap(AnyNode config) { + return Try(() -> usesLegacyFormat(config) ? parseLegacyFormat(config) : parseNewFormat(config)) + .mapFailure(enhanceError( + f("Parsing DMaaP configuration: '%s' failed, probably it is in unexpected format", config))); + } + + private static boolean usesLegacyFormat(AnyNode dMaaPConfig) { + return dMaaPConfig.has("channels"); + } + + private static Map<String, PublisherConfig> parseLegacyFormat(AnyNode root) { + return root.get("channels").toList().toMap( + channel -> channel.get("name").toString(), + channel -> { + String destinationsStr = channel.getAsOption("cambria.url") + .getOrElse(channel.getAsOption("cambria.hosts").get()) + .toString(); + String topic = channel.get("cambria.topic").toString(); + Option<String> maybeUser = channel.getAsOption("basicAuthUsername").map(AnyNode::toString); + Option<String> maybePassword = channel.getAsOption("basicAuthPassword").map(AnyNode::toString); + List<String> destinations = List(destinationsStr.split(",")); + return buildBasedOnAuth(maybeUser, maybePassword, topic, destinations); + }); + } + + private static Map<String, PublisherConfig> parseNewFormat(AnyNode root) { + return root.keys().toMap( + channelName -> channelName, + channelName -> { + AnyNode channelConfig = root.get(channelName); + Option<String> maybeUser = channelConfig.getAsOption("aaf_username").map(AnyNode::toString); + Option<String> maybePassword = channelConfig.getAsOption("aaf_password").map(AnyNode::toString); + URL topicURL = unchecked( + () -> new URL(channelConfig.get("dmaap_info").get("topic_url").toString())).apply(); + String[] pathSegments = topicURL.getPath().substring(1).split("/"); + String topic = pathSegments[1]; + String destination = "events".equals(pathSegments[0]) ? topicURL.getAuthority() : topicURL.getHost(); + List<String> destinations = List(destination); + return buildBasedOnAuth(maybeUser, maybePassword, topic, destinations); + }); + } + + private static PublisherConfig buildBasedOnAuth(Option<String> maybeUser, Option<String> maybePassword, + String topic, List<String> destinations) { + return maybeUser.flatMap(user -> maybePassword.map(password -> Tuple(user, password))) + .map(credentials -> new PublisherConfig(destinations, topic, credentials._1, credentials._2)) + .getOrElse(new PublisherConfig(destinations, topic)); + } + +} diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/event/publishing/DMaaPEventPublisher.java b/src/main/java/org/onap/dcae/collectors/restconf/common/event/publishing/DMaaPEventPublisher.java new file mode 100755 index 0000000..36e950f --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/event/publishing/DMaaPEventPublisher.java @@ -0,0 +1,75 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.dcae.collectors.restconf.common.event.publishing; + +import com.att.nsa.cambria.client.CambriaBatchingPublisher; +import io.vavr.control.Try; +import org.json.JSONObject; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.io.IOException; + +public class DMaaPEventPublisher implements EventPublisher { + + private static final int PENDING_MESSAGE_LOG_THRESHOLD = 100; + private static final Logger log = LoggerFactory.getLogger(DMaaPEventPublisher.class); + private final DMaaPPublishersCache publishersCache; + private final Logger outputLogger; + + DMaaPEventPublisher(DMaaPPublishersCache DMaaPPublishersCache, + Logger outputLogger) { + this.publishersCache = DMaaPPublishersCache; + this.outputLogger = outputLogger; + } + + @Override + public void sendEvent(JSONObject event, String domain) { + publishersCache.getPublisher(domain) + .onEmpty(() -> + log.warn(VavrUtils.f("Could not find event publisher for domain: '%s', dropping message: '%s'", domain, event))) + .forEach(publisher -> sendEvent(event, domain, publisher)); + } + + private void sendEvent(JSONObject event, String domain, CambriaBatchingPublisher publisher) { + Try.run(() -> uncheckedSendEvent(event, domain, publisher)) + .onFailure(exc -> closePublisher(event, domain, exc)); + } + + private void uncheckedSendEvent(JSONObject event, String domain, CambriaBatchingPublisher publisher) + throws IOException { + System.out.println("printing publisher information" + publisher); + int pendingMsgs = publisher.send("MyPartitionKey", event.toString()); + if (pendingMsgs > PENDING_MESSAGE_LOG_THRESHOLD) { + log.info("Pending messages count: " + pendingMsgs); + } + String infoMsg = VavrUtils.f("Event: '%s' scheduled to be send asynchronously on domain: '%s'", event, domain); + log.info(infoMsg); + outputLogger.info(infoMsg); + } + + private void closePublisher(JSONObject event, String domain, Throwable e) { + log.error(VavrUtils.f("Unable to schedule event: '%s' on domain: '%s'. Closing publisher and dropping message.", + event, domain), e); + publishersCache.closePublisherFor(domain); + } + +} diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/event/publishing/DMaaPPublishersBuilder.java b/src/main/java/org/onap/dcae/collectors/restconf/common/event/publishing/DMaaPPublishersBuilder.java new file mode 100755 index 0000000..2f9b3ed --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/event/publishing/DMaaPPublishersBuilder.java @@ -0,0 +1,63 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.dcae.collectors.restconf.common.event.publishing; + +import com.att.nsa.cambria.client.CambriaBatchingPublisher; +import com.att.nsa.cambria.client.CambriaClientBuilders; +import com.att.nsa.cambria.client.CambriaClientBuilders.PublisherBuilder; +import io.vavr.control.Try; + +import static io.vavr.API.Try; +import static org.onap.dcae.collectors.restconf.common.event.publishing.VavrUtils.enhanceError; +import static org.onap.dcae.collectors.restconf.common.event.publishing.VavrUtils.f; + +/** + * @author Pawel Szalapski (pawel.szalapski@nokia.com) + */ +final class DMaaPPublishersBuilder { + + @SuppressWarnings("mapFailure takes a generic varargs, unchecked because of Javas type system limitation, actually safe to do") + static Try<CambriaBatchingPublisher> buildPublisher(PublisherConfig config) { + return Try(() -> builder(config).build()) + .mapFailure(enhanceError(f("DMaaP client builder throws exception for this configuration: '%s'", config))); + } + + private static PublisherBuilder builder(PublisherConfig config) { + if (config.isSecured()) { + return authenticatedBuilder(config); + } else { + return unAuthenticatedBuilder(config); + } + } + + private static PublisherBuilder authenticatedBuilder(PublisherConfig config) { + return unAuthenticatedBuilder(config) + .usingHttps() + .authenticatedByHttp(config.userName().get(), config.password().get()); + } + + private static PublisherBuilder unAuthenticatedBuilder(PublisherConfig config) { + return new CambriaClientBuilders.PublisherBuilder() + .usingHosts(config.destinations().mkString(",")) + .onTopic(config.topic()) + .logSendFailuresAfter(5); + } +} diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/event/publishing/DMaaPPublishersCache.java b/src/main/java/org/onap/dcae/collectors/restconf/common/event/publishing/DMaaPPublishersCache.java new file mode 100755 index 0000000..acad96d --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/event/publishing/DMaaPPublishersCache.java @@ -0,0 +1,110 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.dcae.collectors.restconf.common.event.publishing; + +import com.att.nsa.cambria.client.CambriaBatchingPublisher; +import com.google.common.cache.CacheBuilder; +import com.google.common.cache.CacheLoader; +import com.google.common.cache.LoadingCache; +import com.google.common.cache.RemovalListener; +import com.google.common.cache.RemovalNotification; +import io.vavr.collection.Map; +import io.vavr.control.Option; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import javax.annotation.Nonnull; +import java.io.IOException; +import java.util.concurrent.TimeUnit; +import java.util.concurrent.atomic.AtomicReference; + +import static io.vavr.API.Option; +import static org.onap.dcae.collectors.restconf.common.event.publishing.VavrUtils.f; + +public class DMaaPPublishersCache { + + private static final Logger log = LoggerFactory.getLogger(DMaaPPublishersCache.class); + private final LoadingCache<String, CambriaBatchingPublisher> publishersCache; + private AtomicReference<Map<String, PublisherConfig>> dMaaPConfiguration; + + DMaaPPublishersCache(Map<String, PublisherConfig> dMaaPConfiguration) { + this.dMaaPConfiguration = new AtomicReference<>(dMaaPConfiguration); + this.publishersCache = CacheBuilder.newBuilder() + .removalListener(new OnPublisherRemovalListener()) + .build(new CambriaPublishersCacheLoader()); + } + + DMaaPPublishersCache(CambriaPublishersCacheLoader dMaaPPublishersCacheLoader, + OnPublisherRemovalListener onPublisherRemovalListener, + Map<String, PublisherConfig> dMaaPConfiguration) { + this.dMaaPConfiguration = new AtomicReference<>(dMaaPConfiguration); + this.publishersCache = CacheBuilder.newBuilder() + .removalListener(onPublisherRemovalListener) + .build(dMaaPPublishersCacheLoader); + } + + Option<CambriaBatchingPublisher> getPublisher(String streamID) { + try { + return Option(publishersCache.getUnchecked(streamID)); + } catch (Exception e) { + log.warn("Could not create / load Cambria Publisher for streamID", e); + return Option.none(); + } + } + + void closePublisherFor(String streamId) { + publishersCache.invalidate(streamId); + } + + static class OnPublisherRemovalListener implements RemovalListener<String, CambriaBatchingPublisher> { + + @Override + public void onRemoval(@Nonnull RemovalNotification<String, CambriaBatchingPublisher> notification) { + CambriaBatchingPublisher publisher = notification.getValue(); + if (publisher != null) { // The value might get Garbage Collected at this moment, regardless of @Nonnull + try { + int timeout = 20; + TimeUnit unit = TimeUnit.SECONDS; + java.util.List<?> stuck = publisher.close(timeout, unit); + if (!stuck.isEmpty()) { + log.error(f("Publisher got stuck and did not manage to close in '%s' '%s', " + + "%s messages were dropped", stuck.size(), timeout, unit)); + } + } catch (InterruptedException | IOException e) { + log.error("Could not close Cambria publisher, some messages might have been dropped", e); + } + } + } + } + + class CambriaPublishersCacheLoader extends CacheLoader<String, CambriaBatchingPublisher> { + + @Override + public CambriaBatchingPublisher load(@Nonnull String domain) { + return dMaaPConfiguration.get() + .get(domain) + .toTry(() -> new RuntimeException( + f("DMaaP configuration contains no configuration for domain: '%s'", domain))) + .flatMap(DMaaPPublishersBuilder::buildPublisher) + .get(); + } + } +} diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/event/publishing/EventPublisher.java b/src/main/java/org/onap/dcae/collectors/restconf/common/event/publishing/EventPublisher.java new file mode 100755 index 0000000..3d339b3 --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/event/publishing/EventPublisher.java @@ -0,0 +1,35 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ +package org.onap.dcae.collectors.restconf.common.event.publishing; + + +import io.vavr.collection.Map; +import org.json.JSONObject; +import org.slf4j.Logger; + +public interface EventPublisher { + + static EventPublisher createPublisher(Logger outputLogger, Map<String, PublisherConfig> dMaaPConfig) { + return new DMaaPEventPublisher(new DMaaPPublishersCache(dMaaPConfig), outputLogger); + } + + void sendEvent(JSONObject event, String domain); + +} diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/event/publishing/PublisherConfig.java b/src/main/java/org/onap/dcae/collectors/restconf/common/event/publishing/PublisherConfig.java new file mode 100755 index 0000000..33fa15b --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/event/publishing/PublisherConfig.java @@ -0,0 +1,95 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ +package org.onap.dcae.collectors.restconf.common.event.publishing; + +import io.vavr.collection.List; +import io.vavr.control.Option; + +import java.util.Objects; + +public class PublisherConfig { + private final List<String> destinations; + private final String topic; + private String userName; + private String password; + + PublisherConfig(List<String> destinations, String topic) { + this.destinations = destinations; + this.topic = topic; + } + + PublisherConfig(List<String> destinations, String topic, String userName, String password) { + this.destinations = destinations; + this.topic = topic; + this.userName = userName; + this.password = password; + } + + List<String> destinations() { + return destinations; + } + + String topic() { + return topic; + } + + Option<String> userName() { + return Option.of(userName); + } + + Option<String> password() { + return Option.of(password); + } + + boolean isSecured() { + return userName().isDefined() && password().isDefined(); + } + + + @Override + public boolean equals(Object o) { + if (this == o) { + return true; + } + if (o == null || getClass() != o.getClass()) { + return false; + } + PublisherConfig that = (PublisherConfig) o; + return Objects.equals(destinations, that.destinations) && + Objects.equals(topic, that.topic) && + Objects.equals(userName, that.userName) && + Objects.equals(password, that.password); + } + + @Override + public int hashCode() { + return Objects.hash(destinations, topic, userName, password); + } + + @Override + public String toString() { + return "PublisherConfig{" + + "destinations=" + destinations + + ", topic='" + topic + '\'' + + ", userName='" + userName + '\'' + + ", password='" + password + '\'' + + '}'; + } +} diff --git a/src/main/java/org/onap/dcae/collectors/restconf/common/event/publishing/VavrUtils.java b/src/main/java/org/onap/dcae/collectors/restconf/common/event/publishing/VavrUtils.java new file mode 100755 index 0000000..77a3052 --- /dev/null +++ b/src/main/java/org/onap/dcae/collectors/restconf/common/event/publishing/VavrUtils.java @@ -0,0 +1,48 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.restconf + * ================================================================================ + * Copyright (C) 2018 Nokia. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.dcae.collectors.restconf.common.event.publishing; + +import io.vavr.API; +import io.vavr.API.Match.Case; + +import static io.vavr.API.$; + + +public class VavrUtils { + private VavrUtils() { + // utils aggregator + } + + /** + * Shortcut for 'string interpolation' + */ + static String f(String msg, Object... args) { + return String.format(msg, args); + } + + /** + * Wrap failure with a more descriptive message of what has failed and chain original cause. Used to provide a + * context for errors instead of raw exception. + */ + static Case<Throwable, Throwable> enhanceError(String msg) { + return API.Case($(), e -> new RuntimeException(msg, e)); + } +} |