Add feature-server-pool to the ONAP drools-pdp repository.

Issue-ID: POLICY-2351
Change-Id: I8ddde547a73a51c04c8dd9f1d66232e8281599a9
Signed-off-by: Straubs, Ralph (rs8887) <rs8887@att.com>

3 files changed, 123 insertions, 0 deletions

diff --git a/api-server-pool-state-control/pom.xml b/api-server-pool-state-control/pom.xml
new file mode 100644
index 00000000..790ea506
--- /dev/null
+++ b/api-server-pool-state-control/pom.xml
@@ -0,0 +1,46 @@
+<!--
+  ============LICENSE_START=======================================================
+  api-server-pool-state-control
+  ================================================================================
+  Copyright (C) 2020 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.
+  ============LICENSE_END=========================================================
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.onap.policy.drools-pdp</groupId>
+    <artifactId>drools-pdp</artifactId>
+    <version>1.6.0-SNAPSHOT</version>
+  </parent>
+
+  <artifactId>api-server-pool-state-control</artifactId>
+
+  <name>api-server-pool-state-control</name>
+  <description>APIs for server pool state control</description>
+
+  <dependencies>
+    <dependency>
+      <groupId>org.onap.policy.drools-pdp</groupId>
+      <artifactId>policy-core</artifactId>
+      <version>${project.version}</version>
+      <scope>provided</scope>
+    </dependency>
+  </dependencies>
+
+</project>
\ No newline at end of file
diff --git a/api-server-pool-state-control/src/main/java/org/onap/policy/drools/control/api/DroolsPdpStateControlApi.java b/api-server-pool-state-control/src/main/java/org/onap/policy/drools/control/api/DroolsPdpStateControlApi.java
new file mode 100644
index 00000000..7148f30e
--- /dev/null
+++ b/api-server-pool-state-control/src/main/java/org/onap/policy/drools/control/api/DroolsPdpStateControlApi.java
@@ -0,0 +1,40 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * drools-pdp-state-control-api
+ * ================================================================================
+ * Copyright (C) 2020 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.drools.control.api;
+
+import org.onap.policy.common.utils.services.OrderedService;
+
+public interface DroolsPdpStateControlApi extends OrderedService {
+
+    /**
+     * This method is called when wanting to interrupt the operation of the
+     * drools pdp.  It locks the endpoints, stops the message processing
+     * and removes the instance of the drools pdp from the pool.
+     */
+    void shutdown();
+
+    /**
+     * This method is called when wanting to resume the operation of the
+     * drools pdp.  It unlocks the endpoints, resumes message processing
+     * and adds the instance of the drools pdp to the pool.
+     */
+    void restart();
+}
diff --git a/api-server-pool-state-control/src/main/java/org/onap/policy/drools/control/api/DroolsPdpStateControlApiConstants.java b/api-server-pool-state-control/src/main/java/org/onap/policy/drools/control/api/DroolsPdpStateControlApiConstants.java
new file mode 100644
index 00000000..c82003f3
--- /dev/null
+++ b/api-server-pool-state-control/src/main/java/org/onap/policy/drools/control/api/DroolsPdpStateControlApiConstants.java
@@ -0,0 +1,37 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * drools-pdp-state-control-api
+ * ================================================================================
+ * Copyright (C) 2020 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.drools.control.api;
+
+import org.onap.policy.common.utils.services.OrderedServiceImpl;
+
+public class DroolsPdpStateControlApiConstants {
+
+    /**
+     * 'FeatureAPI.impl.getList()' returns an ordered list of objects
+     * implementing the 'FeatureAPI' interface.
+     */
+    public static OrderedServiceImpl<DroolsPdpStateControlApi> impl =
+        new OrderedServiceImpl<>(DroolsPdpStateControlApi.class);
+
+    private DroolsPdpStateControlApiConstants() {
+        // do nothing
+    }
+}