POMBA Context Aggregator

Change-Id: I33acc1f46d35447b63e2d5438c9ce6728a2b03eb
Issue-ID: LOG-519
Signed-off-by: Prudence Au <prudence.au@amdocs.com>

POMBA Context Aggregator with JUnit tests

Change-Id: I33acc1f46d35447b63e2d5438c9ce6728a2b03eb
Issue-ID: LOG-519
Signed-off-by: Prudence Au <prudence.au@amdocs.com>

4 files changed, 270 insertions, 0 deletions

diff --git a/src/main/java/org/onap/pomba/contextaggregator/config/BuilderConfigLoader.java b/src/main/java/org/onap/pomba/contextaggregator/config/BuilderConfigLoader.java
new file mode 100644
index 0000000..da9fe0f
--- /dev/null
+++ b/src/main/java/org/onap/pomba/contextaggregator/config/BuilderConfigLoader.java
@@ -0,0 +1,105 @@
+/*
+ * ============LICENSE_START===================================================
+ * Copyright (c) 2018 Amdocs
+ * ============================================================================
+ * 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.pomba.contextaggregator.config;
+
+import static java.lang.String.format;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+import org.onap.pomba.contextaggregator.builder.ContextBuilder;
+import org.onap.pomba.contextaggregator.exception.ContextAggregatorError;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.io.Resource;
+import org.springframework.core.io.support.ResourcePatternResolver;
+
+@Configuration
+public class BuilderConfigLoader {
+    private static Logger log = LoggerFactory.getLogger(BuilderConfigLoader.class);
+    private static final Resource[] EMPTY_ARRAY = new Resource[0];
+    private static final String[] BUILDERS_PROPERTIES_LOCATION =
+            {"file:./%s/*.properties", "classpath:/%s/*.properties"};
+
+    @Autowired
+    private ResourcePatternResolver rpr;
+    @Value("${builders.properties.path}")
+    private String buildersPropertiesPath;
+
+
+    /**
+     * Generates a list of context builders by loading property files (*.properties) from a configured
+     * builders location.
+     *
+     * <pre>
+     * The location is searched in the following order: file:./${buildersPropertiesPath} and
+     * classpath:/${buildersPropertiesPath} to support override of default values.
+     *
+     * @return Returns a list of context builders
+     */
+    @Bean
+    public List<ContextBuilder> contextBuilders() {
+        try {
+            final Resource[] blrdsConfig = resolveBldrsConfig();
+            if (isEmpty(blrdsConfig)) {
+                log.error(ContextAggregatorError.BUILDER_PROPERTIES_NOT_FOUND
+                        .getMessage(Arrays.toString(bldrsPropLoc2Path(buildersPropertiesPath))));
+                return Collections.emptyList();
+            }
+
+            final List<ContextBuilder> contextBuilders = new ArrayList<>();
+            for (Resource r : blrdsConfig) {
+                contextBuilders.add(new ContextBuilder(r.getInputStream(), r.getFilename()));
+            }
+
+            return contextBuilders;
+        } catch (IOException ex) {
+            log.error(ContextAggregatorError.FAILED_TO_LOAD_BUILDER_PROPERTIES.getMessage(ex.getMessage()));
+        }
+
+        return Collections.emptyList();
+    }
+
+    private Resource[] resolveBldrsConfig() throws IOException {
+        for (String p : bldrsPropLoc2Path(buildersPropertiesPath)) {
+            Resource[] bldrsConfig = rpr.getResources(p);
+            if (!isEmpty(bldrsConfig)) {
+                return bldrsConfig;
+            }
+        }
+        return EMPTY_ARRAY;
+    }
+
+    private static String[] bldrsPropLoc2Path(String buildersPropertiesPath) {
+        String[] res = new String[BUILDERS_PROPERTIES_LOCATION.length];
+        int indx = 0;
+        for (String tmpl : BUILDERS_PROPERTIES_LOCATION) {
+            res[indx++] = format(tmpl, buildersPropertiesPath).replace("//", "/");
+        }
+        return res;
+    }
+
+    private static boolean isEmpty(Object[] obj) {
+        return obj == null || obj.length == 0;
+    }
+}
diff --git a/src/main/java/org/onap/pomba/contextaggregator/config/EventConfig.java b/src/main/java/org/onap/pomba/contextaggregator/config/EventConfig.java
new file mode 100644
index 0000000..f70d0c2
--- /dev/null
+++ b/src/main/java/org/onap/pomba/contextaggregator/config/EventConfig.java
@@ -0,0 +1,37 @@
+/*
+ * ============LICENSE_START===================================================
+ * Copyright (c) 2018 Amdocs
+ * ============================================================================
+ * 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.pomba.contextaggregator.config;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class EventConfig {
+
+    @Bean
+    public EventHeaderConfig eventHeaderConfig(@Value("${event.header.domain}") String domain,
+            @Value("${event.header.source-name}") String sourceName,
+            @Value("${event.header.event-type}") String eventType,
+            @Value("${event.header.entity-type}") String entityType,
+            @Value("${event.header.topic-entity-type}") String topicEntityType,
+            @Value("${event.header.topic-name}") String topicName) {
+
+        return new EventHeaderConfig(domain, sourceName, eventType, entityType, topicEntityType, topicName);
+    }
+}
diff --git a/src/main/java/org/onap/pomba/contextaggregator/config/EventHeaderConfig.java b/src/main/java/org/onap/pomba/contextaggregator/config/EventHeaderConfig.java
new file mode 100644
index 0000000..a1cd4f1
--- /dev/null
+++ b/src/main/java/org/onap/pomba/contextaggregator/config/EventHeaderConfig.java
@@ -0,0 +1,62 @@
+/*
+ * ============LICENSE_START===================================================
+ * Copyright (c) 2018 Amdocs
+ * ============================================================================
+ * 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.pomba.contextaggregator.config;
+
+public class EventHeaderConfig {
+
+    private String domain;
+    private String sourceName;
+    private String eventType;
+    private String entityType;
+    private String topicEntityType;
+    private String topicName;
+
+    public EventHeaderConfig(String domain, String sourceName, String eventType, String entityType,
+            String topicEntityType, String topicName) {
+        this.domain = domain;
+        this.sourceName = sourceName;
+        this.eventType = eventType;
+        this.entityType = entityType;
+        this.topicEntityType = topicEntityType;
+        this.topicName = topicName;
+    }
+
+    public String getDomain() {
+        return domain;
+    }
+
+    public String getSourceName() {
+        return sourceName;
+    }
+
+    public String getEventType() {
+        return eventType;
+    }
+
+    public String getEntityType() {
+        return entityType;
+    }
+
+    public String getTopicEntityType() {
+        return topicEntityType;
+    }
+
+    public String getTopicName() {
+        return topicName;
+    }
+}
diff --git a/src/main/java/org/onap/pomba/contextaggregator/config/TransportConfig.java b/src/main/java/org/onap/pomba/contextaggregator/config/TransportConfig.java
new file mode 100644
index 0000000..12f0cc8
--- /dev/null
+++ b/src/main/java/org/onap/pomba/contextaggregator/config/TransportConfig.java
@@ -0,0 +1,66 @@
+/*
+ * ============LICENSE_START===================================================
+ * Copyright (c) 2018 Amdocs
+ * ============================================================================
+ * 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.pomba.contextaggregator.config;
+
+import java.util.Properties;
+import org.onap.pomba.contextaggregator.publisher.EventPublisherFactory;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import com.att.nsa.mr.client.MRClientFactory;
+import com.att.nsa.mr.client.MRConsumer;
+import com.att.nsa.mr.client.impl.MRConsumerImpl;
+
+@Configuration
+public class TransportConfig {
+
+    @Bean
+    public MRConsumer consumer(@Value("${transport.consume.host}") String host,
+            @Value("${transport.consume.port}") String port, @Value("${transport.consume.topic}") String topic,
+            @Value("${transport.consume.motsid}") String motsid, @Value("${transport.consume.pass}") String pass,
+            @Value("${transport.consume.consumergroup}") String consumerGroup,
+            @Value("${transport.consume.consumerid}") String consumerId,
+            @Value("${transport.consume.timeout}") int timeout, @Value("${transport.consume.batchsize}") int batchSize,
+            @Value("${transport.consume.msglimit}") int msgLimit, @Value("${transport.consume.type}") String type) {
+
+        String hostStr = host + ":" + port;
+
+        final MRConsumer consumer = MRClientFactory.createConsumer(hostStr, topic, motsid, pass, consumerGroup,
+                consumerId, timeout, msgLimit, type, null);
+
+        final Properties extraProps = new Properties();
+        extraProps.put("Protocol", "http");
+        ((MRConsumerImpl) consumer).setProps(extraProps);
+
+        return consumer;
+    }
+
+    @Bean
+    public EventPublisherFactory publisherFactory(@Value("${transport.publish.host}") String host,
+            @Value("${transport.publish.port}") String port, @Value("${transport.publish.topic}") String topic,
+            @Value("${transport.publish.motsid}") String motsid, @Value("${transport.publish.pass}") String pass,
+            @Value("${transport.publish.batchsize}") int batchSize, @Value("${transport.publish.maxage}") int maxAge,
+            @Value("${transport.publish.delay}") int delay, @Value("${transport.publish.type}") String type,
+            @Value("${transport.publish.partition}") String partition,
+            @Value("${transport.publish.retries}") int retries) {
+
+        String hostStr = host + ":" + port;
+        return new EventPublisherFactory(hostStr, topic, motsid, pass, batchSize, maxAge, delay, type, partition,
+                retries);
+    }
+}