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authorJim Hahn <jrh3@att.com>2019-08-28 15:20:18 -0400
committerJim Hahn <jrh3@att.com>2019-08-30 12:07:32 -0400
commit98873e8c202426b9d74d9460ebd30b57fa4c7eb7 (patch)
treedb56b53965c37b36008c99c49acf9e5d079c2fbf /applications/common/src/main/java
parent30b9aa0d2e2e6b954e2ce25537d7d7ca81d3a5a4 (diff)
Get policy type from policy-api
Added a class to retrieve a policy type from the policy-api. Updated property files to include parameters that are needed to configure it. Updates per review comments: - change PolicyApi to PolicyApiCaller - use HttpClientFactory - removed superfluous constructors from exception classes - changed parameters to use RestServerParameters instead of BusTopicParams Change-Id: I8aad6ca5a733c8ad9cc983496e745ebe7400dd17 Issue-ID: POLICY-1911 Signed-off-by: Jim Hahn <jrh3@att.com>
Diffstat (limited to 'applications/common/src/main/java')
-rw-r--r--applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/NotFoundException.java41
-rw-r--r--applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/PolicyApiCaller.java106
-rw-r--r--applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/PolicyApiException.java40
3 files changed, 187 insertions, 0 deletions
diff --git a/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/NotFoundException.java b/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/NotFoundException.java
new file mode 100644
index 00000000..260d16f2
--- /dev/null
+++ b/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/NotFoundException.java
@@ -0,0 +1,41 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2019 AT&T Intellectual Property. 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.pdp.xacml.application.common;
+
+/**
+ * Exception indicating that the data of interest was not found when querying the
+ * policy-api.
+ */
+public class NotFoundException extends PolicyApiException {
+ private static final long serialVersionUID = 1L;
+
+ public NotFoundException(String message) {
+ super(message);
+ }
+
+ public NotFoundException(Throwable cause) {
+ super(cause);
+ }
+
+ public NotFoundException(String message, Throwable cause) {
+ super(message, cause);
+ }
+}
diff --git a/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/PolicyApiCaller.java b/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/PolicyApiCaller.java
new file mode 100644
index 00000000..9d47517a
--- /dev/null
+++ b/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/PolicyApiCaller.java
@@ -0,0 +1,106 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2019 AT&T Intellectual Property. 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.pdp.xacml.application.common;
+
+import java.net.HttpURLConnection;
+import javax.ws.rs.core.Response;
+import org.onap.policy.common.endpoints.event.comm.bus.internal.BusTopicParams;
+import org.onap.policy.common.endpoints.http.client.HttpClient;
+import org.onap.policy.common.endpoints.http.client.HttpClientConfigException;
+import org.onap.policy.common.endpoints.http.client.HttpClientFactoryInstance;
+import org.onap.policy.common.endpoints.parameters.RestServerParameters;
+import org.onap.policy.common.gson.GsonMessageBodyHandler;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicyType;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicyTypeIdentifier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Methods to access policy-api via REST service calls.
+ */
+public class PolicyApiCaller {
+ private static Logger logger = LoggerFactory.getLogger(PolicyApiCaller.class);
+
+ private static final String POLICY_TYPE_URI = "/policy/api/v1/policytypes/";
+ private static final String POLICY_TYPE_VERSION_URI = "/versions/";
+
+ private final HttpClient httpClient;
+
+ /**
+ * Constructs the object.
+ *
+ * @param params target specification
+ * @throws PolicyApiException if an error occurs
+ */
+ public PolicyApiCaller(RestServerParameters params) throws PolicyApiException {
+ BusTopicParams busParams = new BusTopicParams();
+ busParams.setClientName("policy-api");
+ busParams.setHostname(params.getHost());
+ busParams.setManaged(false);
+ busParams.setPassword(params.getPassword());
+ busParams.setPort(params.getPort());
+ busParams.setSerializationProvider(GsonMessageBodyHandler.class.getName());
+ busParams.setUseHttps(params.isHttps());
+ busParams.setUserName(params.getUserName());
+
+ try {
+ httpClient = makeClient(busParams);
+ } catch (HttpClientConfigException e) {
+ throw new PolicyApiException("connection to host: " + busParams.getHostname(), e);
+ }
+ }
+
+ /**
+ * Gets a policy type from policy-api.
+ *
+ * @param type policy type of interest
+ * @return the desired policy type
+ * @throws PolicyApiException if an error occurs
+ */
+ public ToscaPolicyType getPolicyType(ToscaPolicyTypeIdentifier type) throws PolicyApiException {
+
+ try {
+ Response resp = httpClient
+ .get(POLICY_TYPE_URI + type.getName() + POLICY_TYPE_VERSION_URI + type.getVersion());
+
+ switch (resp.getStatus()) {
+ case HttpURLConnection.HTTP_OK:
+ return resp.readEntity(ToscaPolicyType.class);
+ case HttpURLConnection.HTTP_NOT_FOUND:
+ logger.warn("policy-api not found {}", resp);
+ throw new NotFoundException(type.toString());
+ default:
+ logger.warn("policy-api request error {}", resp);
+ throw new PolicyApiException(type.toString());
+ }
+
+ } catch (RuntimeException e) {
+ logger.warn("policy-api connection error");
+ throw new PolicyApiException(type.toString(), e);
+ }
+ }
+
+ // these methods may be overridden by junit tests
+
+ protected HttpClient makeClient(BusTopicParams busParams) throws HttpClientConfigException {
+ return HttpClientFactoryInstance.getClientFactory().build(busParams);
+ }
+}
diff --git a/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/PolicyApiException.java b/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/PolicyApiException.java
new file mode 100644
index 00000000..380bd19a
--- /dev/null
+++ b/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/PolicyApiException.java
@@ -0,0 +1,40 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2019 AT&T Intellectual Property. 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.pdp.xacml.application.common;
+
+/**
+ * Exception occurring while accessing the policy-api.
+ */
+public class PolicyApiException extends Exception {
+ private static final long serialVersionUID = 1L;
+
+ public PolicyApiException(String message) {
+ super(message);
+ }
+
+ public PolicyApiException(Throwable cause) {
+ super(cause);
+ }
+
+ public PolicyApiException(String message, Throwable cause) {
+ super(message, cause);
+ }
+}