Add possibility to modify the configuration for persistent connection

Issue-ID: DCAEGEN2-1483
Signed-off-by: Pawel <pawel.kasperkiewicz@nokia.com>
Change-Id: Ia5c0699359fe2317bea6177fe6dfce5c68579ba9

3 files changed, 56 insertions, 0 deletions

diff --git a/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/api/DmaapClientFactory.java b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/api/DmaapClientFactory.java
index 95850078..ee4f6d38 100644
--- a/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/api/DmaapClientFactory.java
+++ b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/api/DmaapClientFactory.java
@@ -23,6 +23,8 @@ import io.vavr.control.Option;
 import org.jetbrains.annotations.NotNull;
 import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.RxHttpClient;
 import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.RxHttpClientFactory;
+import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.config.ConnectionPoolConfig;
+import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.config.ImmutableConnectionPoolConfig;
 import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.config.ImmutableRetryConfig;
 import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.config.ImmutableRxHttpClientConfig;
 import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.config.RetryConfig;
@@ -68,6 +70,7 @@ public final class DmaapClientFactory {
 
     private static @NotNull RxHttpClient createHttpClient(DmaapClientConfiguration config) {
         RxHttpClientConfig clientConfig = ImmutableRxHttpClientConfig.builder()
+                .connectionPool(createConnectionPool(config))
                 .retryConfig(createRetry(config))
                 .build();
         return config.securityKeys() == null
@@ -85,5 +88,15 @@ public final class DmaapClientFactory {
                         .build())
                 .getOrNull();
     }
+
+    private static ConnectionPoolConfig createConnectionPool(DmaapClientConfiguration config){
+        return Option.of(config.connectionPoolConfig())
+                .map(cp -> ImmutableConnectionPoolConfig.builder()
+                        .connectionPool(cp.connectionPool())
+                        .maxIdleTime(Duration.ofSeconds(cp.maxIdleTime()))
+                        .maxLifeTime(Duration.ofSeconds(cp.maxLifeTime()))
+                        .build())
+                .getOrNull();
+    }
 }
 
diff --git a/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/model/config/DmaapClientConfiguration.java b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/model/config/DmaapClientConfiguration.java
index 3e283511..6dcdf988 100644
--- a/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/model/config/DmaapClientConfiguration.java
+++ b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/model/config/DmaapClientConfiguration.java
@@ -36,4 +36,8 @@ public interface DmaapClientConfiguration {
     default @Nullable DmaapRetryConfig retryConfig(){
         return null;
     }
+    @Value.Default
+    default @Nullable DmaapConnectionPoolConfig connectionPoolConfig (){
+        return null;
+    }
 }
diff --git a/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/model/config/DmaapConnectionPoolConfig.java b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/model/config/DmaapConnectionPoolConfig.java
new file mode 100644
index 00000000..38166e4e
--- /dev/null
+++ b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/model/config/DmaapConnectionPoolConfig.java
@@ -0,0 +1,39 @@
+/*
+ * ============LICENSE_START====================================
+ * DCAEGEN2-SERVICES-SDK
+ * =========================================================
+ * Copyright (C) 2021 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.dcaegen2.services.sdk.rest.services.dmaap.client.model.config;
+
+import org.immutables.value.Value;
+
+@Value.Immutable
+public interface DmaapConnectionPoolConfig {
+
+    @Value.Default
+    default int connectionPool(){
+        return 16;
+    }
+    @Value.Default
+    default int maxLifeTime(){
+        return Integer.MAX_VALUE;
+    }
+    @Value.Default
+    default int maxIdleTime(){
+        return  Integer.MAX_VALUE;
+    }
+}
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