Enhancing the REST template with HttpClient5

for better performance and allowing users to configure timeouts as per their requirements

Issue-ID: CPS-1994
Change-Id: I9fa94fb3923a50e33b3850ec0f190a51e278698f
Signed-off-by: waqas.ikram <waqas.ikram@est.tech>

3 files changed, 62 insertions, 6 deletions

diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImplRegistrationSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImplRegistrationSpec.groovy
index 51b00d143..013341f4b 100644
--- a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImplRegistrationSpec.groovy
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImplRegistrationSpec.groovy
@@ -212,7 +212,7 @@ class NetworkCmProxyDataServiceImplRegistrationSpec extends Specification {
             1 * mockLcmEventsCmHandleStateHandler.initiateStateAdvised(_) >> {
                 args ->
                     {
-                        def cmHandleStatePerCmHandle = (args[0] as Map)
+                        def cmHandleStatePerCmHandle = (args[0] as List)
                         cmHandleStatePerCmHandle.each {
                             assert (it.id == 'cmhandle' && it.dmiServiceName == 'my-server')
                         }
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/config/HttpClientConfigurationSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/config/HttpClientConfigurationSpec.groovy
new file mode 100644
index 000000000..941c8b8a7
--- /dev/null
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/config/HttpClientConfigurationSpec.groovy
@@ -0,0 +1,48 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2023 Nordix Foundation.
+ * ================================================================================
+ * 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.cps.ncmp.api.impl.config
+
+import java.time.Duration
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.boot.context.properties.EnableConfigurationProperties
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.test.context.ContextConfiguration
+import org.springframework.test.context.TestPropertySource
+import org.springframework.test.context.support.AnnotationConfigContextLoader
+import spock.lang.Specification
+
+@SpringBootTest
+@ContextConfiguration(classes = [HttpClientConfiguration])
+@EnableConfigurationProperties(HttpClientConfiguration.class)
+@TestPropertySource(properties = ["httpclient5.connectionTimeoutInSeconds=1", "httpclient5.maximumConnectionsTotal=200"])
+class HttpClientConfigurationSpec extends Specification {
+
+    @Autowired
+    private HttpClientConfiguration httpClientConfiguration
+
+    def 'Test HttpClientConfiguration properties with custom and default values'() {
+        expect: 'custom property values'
+            httpClientConfiguration.getConnectionTimeoutInSeconds() == Duration.ofSeconds(1)
+            httpClientConfiguration.getMaximumConnectionsTotal() == 200
+        and: 'default property values'
+            httpClientConfiguration.getMaximumConnectionsPerRoute() == 50
+            httpClientConfiguration.getIdleConnectionEvictionThresholdInSeconds() == Duration.ofSeconds(5)
+    }
+}
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/config/NcmpConfigurationSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/config/NcmpConfigurationSpec.groovy
index e1aba79a5..a4df9b37c 100644
--- a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/config/NcmpConfigurationSpec.groovy
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/config/NcmpConfigurationSpec.groovy
@@ -1,6 +1,6 @@
 /*
  * ============LICENSE_START=======================================================
- *  Copyright (C) 2021 Nordix Foundation
+ *  Copyright (C) 2021-2023 Nordix Foundation
  *  ================================================================================
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -19,22 +19,27 @@
  */
 package org.onap.cps.ncmp.api.impl.config
 
+import org.apache.hc.client5.http.impl.classic.CloseableHttpClient
 import org.springframework.beans.factory.annotation.Autowired
 import org.springframework.boot.test.context.SpringBootTest
 import org.springframework.boot.web.client.RestTemplateBuilder
 import org.springframework.http.MediaType
+import org.springframework.http.client.HttpComponentsClientHttpRequestFactory
 import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter
 import org.springframework.test.context.ContextConfiguration
 import org.springframework.web.client.RestTemplate
 import spock.lang.Specification
 
 @SpringBootTest
-@ContextConfiguration(classes = [NcmpConfiguration.DmiProperties])
+@ContextConfiguration(classes = [NcmpConfiguration.DmiProperties, HttpClientConfiguration])
 class NcmpConfigurationSpec extends Specification{
 
     @Autowired
     NcmpConfiguration.DmiProperties dmiProperties
-
+    
+    @Autowired
+    HttpClientConfiguration httpClientConfiguration
+    
     def mockRestTemplateBuilder = new RestTemplateBuilder()
 
     def 'NcmpConfiguration Construction.'() {
@@ -48,11 +53,14 @@ class NcmpConfigurationSpec extends Specification{
             dmiProperties.authPassword == 'some-password'
     }
 
-    def 'Rest Template creation.'() {
+    def 'Rest Template creation with CloseableHttpClient and MappingJackson2HttpMessageConverter.'() {
         when: 'a rest template is created'
-            def result = NcmpConfiguration.restTemplate(mockRestTemplateBuilder)
+            def result = NcmpConfiguration.restTemplate(mockRestTemplateBuilder, httpClientConfiguration)
         then: 'the rest template is returned'
             assert result instanceof RestTemplate
+        and: 'the rest template is created with httpclient5'
+            assert result.getRequestFactory() instanceof HttpComponentsClientHttpRequestFactory
+            assert ((HttpComponentsClientHttpRequestFactory) result.getRequestFactory()).getHttpClient() instanceof CloseableHttpClient;
         and: 'a jackson media converter has been added'
             def lastMessageConverter = result.getMessageConverters().get(result.getMessageConverters().size()-1)
             lastMessageConverter instanceof MappingJackson2HttpMessageConverter