Adding health check endpoint to distribution

* Adding health check REST endpoint to distribution service.
* Adding isAlive field to DistributionActivator to fetch the health
  status.
* Adding parameter group for rest server parameters.
* Adding DistributionRestController for hosting all the rest endpoints
  in distribution service.
* Adding DistributionRestServer to manage lifecycle of distribution rest server.
* Adding ParameterValidationUtils utility class for common validations.
  Plan is to move this class to policy-common for wider use later.
* Adding test cases for all new code added.
* Refering common classes from policy/common

Change-Id: I246d57133ed1f0c3548bcdee173d7b64fb368abc
Issue-ID: POLICY-1035
Signed-off-by: ramverma <ram.krishna.verma@ericsson.com>

20 files changed, 309 insertions, 1 deletions

diff --git a/main/src/test/resources/parameters/DistributionConfigParameters.json b/main/src/test/resources/parameters/DistributionConfigParameters.json
index bcf8b263..7ebab314 100644
--- a/main/src/test/resources/parameters/DistributionConfigParameters.json
+++ b/main/src/test/resources/parameters/DistributionConfigParameters.json
@@ -1,5 +1,11 @@
 {
     "name":"SDCDistributionGroup",
+    "restServerParameters":{
+        "host":"0.0.0.0",
+        "port":6969,
+        "userName":"healthcheck",
+        "password":"zb!XztG34"
+    },
     "receptionHandlerParameters":{
         "SDCReceptionHandler":{
             "receptionHandlerType":"SDC",
diff --git a/main/src/test/resources/parameters/DistributionConfigParameters_EmptyPolicyDecoder.json b/main/src/test/resources/parameters/DistributionConfigParameters_EmptyPolicyDecoder.json
index a53dc05f..940f9018 100644
--- a/main/src/test/resources/parameters/DistributionConfigParameters_EmptyPolicyDecoder.json
+++ b/main/src/test/resources/parameters/DistributionConfigParameters_EmptyPolicyDecoder.json
@@ -1,5 +1,11 @@
 {
     "name":"SDCDistributionGroup",
+    "restServerParameters":{
+        "host":"0.0.0.0",
+        "port":6969,
+        "userName":"healthcheck",
+        "password":"zb!XztG34"
+    },
     "receptionHandlerParameters":{
         "SDCReceptionHandler":{
             "receptionHandlerType":"SDC",
diff --git a/main/src/test/resources/parameters/DistributionConfigParameters_EmptyPolicyForwarder.json b/main/src/test/resources/parameters/DistributionConfigParameters_EmptyPolicyForwarder.json
index b88fda2a..b596f064 100644
--- a/main/src/test/resources/parameters/DistributionConfigParameters_EmptyPolicyForwarder.json
+++ b/main/src/test/resources/parameters/DistributionConfigParameters_EmptyPolicyForwarder.json
@@ -1,5 +1,11 @@
 {
     "name":"SDCDistributionGroup",
+    "restServerParameters":{
+        "host":"0.0.0.0",
+        "port":6969,
+        "userName":"healthcheck",
+        "password":"zb!XztG34"
+    },
     "receptionHandlerParameters":{
         "SDCReceptionHandler":{
             "receptionHandlerType":"SDC",
diff --git a/main/src/test/resources/parameters/DistributionConfigParameters_EmptyReceptionHandler.json b/main/src/test/resources/parameters/DistributionConfigParameters_EmptyReceptionHandler.json
index 45368be1..74733007 100644
--- a/main/src/test/resources/parameters/DistributionConfigParameters_EmptyReceptionHandler.json
+++ b/main/src/test/resources/parameters/DistributionConfigParameters_EmptyReceptionHandler.json
@@ -1,5 +1,11 @@
 {
     "name":"SDCDistributionGroup",
+    "restServerParameters":{
+        "host":"0.0.0.0",
+        "port":6969,
+        "userName":"healthcheck",
+        "password":"zb!XztG34"
+    },
     "receptionHandlerParameters":{
     }
 }
\ No newline at end of file
diff --git a/main/src/test/resources/parameters/DistributionConfigParameters_InvalidName.json b/main/src/test/resources/parameters/DistributionConfigParameters_InvalidName.json
index aae53f50..f31a396b 100644
--- a/main/src/test/resources/parameters/DistributionConfigParameters_InvalidName.json
+++ b/main/src/test/resources/parameters/DistributionConfigParameters_InvalidName.json
@@ -1,5 +1,11 @@
 {
     "name":" ",
+    "restServerParameters":{
+        "host":"0.0.0.0",
+        "port":6969,
+        "userName":"healthcheck",
+        "password":"zb!XztG34"
+    },
     "receptionHandlerParameters":{
         "SDCReceptionHandler":{
             "receptionHandlerType":"SDC",
diff --git a/main/src/test/resources/parameters/DistributionConfigParameters_InvalidPolicyDecoderClass.json b/main/src/test/resources/parameters/DistributionConfigParameters_InvalidPolicyDecoderClass.json
index c1ad0a9e..cc43e378 100644
--- a/main/src/test/resources/parameters/DistributionConfigParameters_InvalidPolicyDecoderClass.json
+++ b/main/src/test/resources/parameters/DistributionConfigParameters_InvalidPolicyDecoderClass.json
@@ -1,5 +1,11 @@
 {
     "name":"SDCDistributionGroup",
+    "restServerParameters":{
+        "host":"0.0.0.0",
+        "port":6969,
+        "userName":"healthcheck",
+        "password":"zb!XztG34"
+    },
     "receptionHandlerParameters":{
         "SDCReceptionHandler":{
             "receptionHandlerType":"SDC",
diff --git a/main/src/test/resources/parameters/DistributionConfigParameters_InvalidPolicyDecoderType.json b/main/src/test/resources/parameters/DistributionConfigParameters_InvalidPolicyDecoderType.json
index 26f470ea..c4c73eea 100644
--- a/main/src/test/resources/parameters/DistributionConfigParameters_InvalidPolicyDecoderType.json
+++ b/main/src/test/resources/parameters/DistributionConfigParameters_InvalidPolicyDecoderType.json
@@ -1,5 +1,11 @@
 {
     "name":"SDCDistributionGroup",
+    "restServerParameters":{
+        "host":"0.0.0.0",
+        "port":6969,
+        "userName":"healthcheck",
+        "password":"zb!XztG34"
+    },
     "receptionHandlerParameters":{
         "SDCReceptionHandler":{
             "receptionHandlerType":"SDC",
diff --git a/main/src/test/resources/parameters/DistributionConfigParameters_InvalidPolicyForwarderClass.json b/main/src/test/resources/parameters/DistributionConfigParameters_InvalidPolicyForwarderClass.json
index a194e958..899fccab 100644
--- a/main/src/test/resources/parameters/DistributionConfigParameters_InvalidPolicyForwarderClass.json
+++ b/main/src/test/resources/parameters/DistributionConfigParameters_InvalidPolicyForwarderClass.json
@@ -1,5 +1,11 @@
 {
     "name":"SDCDistributionGroup",
+    "restServerParameters":{
+        "host":"0.0.0.0",
+        "port":6969,
+        "userName":"healthcheck",
+        "password":"zb!XztG34"
+    },
     "receptionHandlerParameters":{
         "SDCReceptionHandler":{
             "receptionHandlerType":"SDC",
diff --git a/main/src/test/resources/parameters/DistributionConfigParameters_InvalidPolicyForwarderType.json b/main/src/test/resources/parameters/DistributionConfigParameters_InvalidPolicyForwarderType.json
index 895e7d55..5e262c05 100644
--- a/main/src/test/resources/parameters/DistributionConfigParameters_InvalidPolicyForwarderType.json
+++ b/main/src/test/resources/parameters/DistributionConfigParameters_InvalidPolicyForwarderType.json
@@ -1,5 +1,11 @@
 {
     "name":"SDCDistributionGroup",
+    "restServerParameters":{
+        "host":"0.0.0.0",
+        "port":6969,
+        "userName":"healthcheck",
+        "password":"zb!XztG34"
+    },
     "receptionHandlerParameters":{
         "SDCReceptionHandler":{
             "receptionHandlerType":"SDC",
diff --git a/main/src/test/resources/parameters/DistributionConfigParameters_InvalidReceptionHandlerClass.json b/main/src/test/resources/parameters/DistributionConfigParameters_InvalidReceptionHandlerClass.json
index a368a5b6..4ff308c2 100644
--- a/main/src/test/resources/parameters/DistributionConfigParameters_InvalidReceptionHandlerClass.json
+++ b/main/src/test/resources/parameters/DistributionConfigParameters_InvalidReceptionHandlerClass.json
@@ -1,5 +1,11 @@
 {
     "name":"SDCDistributionGroup",
+    "restServerParameters":{
+        "host":"0.0.0.0",
+        "port":6969,
+        "userName":"healthcheck",
+        "password":"zb!XztG34"
+    },
     "receptionHandlerParameters":{
         "SDCReceptionHandler":{
             "receptionHandlerType":"SDC",
diff --git a/main/src/test/resources/parameters/DistributionConfigParameters_InvalidReceptionHandlerType.json b/main/src/test/resources/parameters/DistributionConfigParameters_InvalidReceptionHandlerType.json
index bf0db3e6..a6be01ee 100644
--- a/main/src/test/resources/parameters/DistributionConfigParameters_InvalidReceptionHandlerType.json
+++ b/main/src/test/resources/parameters/DistributionConfigParameters_InvalidReceptionHandlerType.json
@@ -1,5 +1,11 @@
 {
     "name":"SDCDistributionGroup",
+    "restServerParameters":{
+        "host":"0.0.0.0",
+        "port":6969,
+        "userName":"healthcheck",
+        "password":"zb!XztG34"
+    },
     "receptionHandlerParameters":{
         "SDCReceptionHandler":{
             "receptionHandlerType":" ",
diff --git a/main/src/test/resources/parameters/DistributionConfigParameters_InvalidRestServerHost.json b/main/src/test/resources/parameters/DistributionConfigParameters_InvalidRestServerHost.json
new file mode 100644
index 00000000..b59074d2
--- /dev/null
+++ b/main/src/test/resources/parameters/DistributionConfigParameters_InvalidRestServerHost.json
@@ -0,0 +1,53 @@
+{
+    "name":"SDCDistributionGroup",
+    "restServerParameters":{
+        "host":"",
+        "port":6969,
+        "userName":"healthcheck",
+        "password":"zb!XztG34"
+    },
+    "receptionHandlerParameters":{
+        "SDCReceptionHandler":{
+            "receptionHandlerType":"SDC",
+            "receptionHandlerClassName":"org.onap.policy.distribution.reception.handling.sdc.SdcReceptionHandler",
+            "pssdConfiguration":{
+                "asdcAddress": "localhost",
+                "messageBusAddress": [
+                    "a.com",
+                    "b.com",
+                    "c.com"
+                 ],
+                "user": "tbdsdc-1480",
+                "password": "tbdsdc-1480",
+                "pollingInterval":20,
+                "pollingTimeout":30,
+                "consumerId": "policy-id",
+                "artifactTypes": [
+                    "TOSCA_CSAR",
+                    "HEAT"
+                ],
+                "consumerGroup": "policy-group",
+                "environmentName": "environmentName",
+                "keystorePath": "null",
+                "keystorePassword": "null",
+                "activeserverTlsAuth": false,
+                "isFilterinEmptyResources": true,
+                "isUseHttpsWithDmaap": false
+            },
+            "pluginHandlerParameters":{
+                "policyDecoders":{
+                    "TOSCADecoder":{
+                        "decoderType":"TOSCA",
+                        "decoderClassName":"org.onap.policy.distribution.reception.decoding.pdpx.PolicyDecoderToscaPdpx"
+                    }
+                },
+                "policyForwarders":{
+                    "PAPEngineForwarder":{
+                        "forwarderType":"PAPEngine",
+                        "forwarderClassName":"org.onap.policy.distribution.forwarding.pap.engine.XacmlPapServletPolicyForwarder"
+                    }
+                }
+            }
+        }
+    }
+}
diff --git a/main/src/test/resources/parameters/DistributionConfigParameters_InvalidRestServerPassword.json b/main/src/test/resources/parameters/DistributionConfigParameters_InvalidRestServerPassword.json
new file mode 100644
index 00000000..7161dee3
--- /dev/null
+++ b/main/src/test/resources/parameters/DistributionConfigParameters_InvalidRestServerPassword.json
@@ -0,0 +1,53 @@
+{
+    "name":"SDCDistributionGroup",
+    "restServerParameters":{
+        "host":"0.0.0.0",
+        "port":6969,
+        "userName":"healthcheck",
+        "password":""
+    },
+    "receptionHandlerParameters":{
+        "SDCReceptionHandler":{
+            "receptionHandlerType":"SDC",
+            "receptionHandlerClassName":"org.onap.policy.distribution.reception.handling.sdc.SdcReceptionHandler",
+            "pssdConfiguration":{
+                "asdcAddress": "localhost",
+                "messageBusAddress": [
+                    "a.com",
+                    "b.com",
+                    "c.com"
+                 ],
+                "user": "tbdsdc-1480",
+                "password": "tbdsdc-1480",
+                "pollingInterval":20,
+                "pollingTimeout":30,
+                "consumerId": "policy-id",
+                "artifactTypes": [
+                    "TOSCA_CSAR",
+                    "HEAT"
+                ],
+                "consumerGroup": "policy-group",
+                "environmentName": "environmentName",
+                "keystorePath": "null",
+                "keystorePassword": "null",
+                "activeserverTlsAuth": false,
+                "isFilterinEmptyResources": true,
+                "isUseHttpsWithDmaap": false
+            },
+            "pluginHandlerParameters":{
+                "policyDecoders":{
+                    "TOSCADecoder":{
+                        "decoderType":"TOSCA",
+                        "decoderClassName":"org.onap.policy.distribution.reception.decoding.pdpx.PolicyDecoderToscaPdpx"
+                    }
+                },
+                "policyForwarders":{
+                    "PAPEngineForwarder":{
+                        "forwarderType":"PAPEngine",
+                        "forwarderClassName":"org.onap.policy.distribution.forwarding.pap.engine.XacmlPapServletPolicyForwarder"
+                    }
+                }
+            }
+        }
+    }
+}
diff --git a/main/src/test/resources/parameters/DistributionConfigParameters_InvalidRestServerPort.json b/main/src/test/resources/parameters/DistributionConfigParameters_InvalidRestServerPort.json
new file mode 100644
index 00000000..aa480745
--- /dev/null
+++ b/main/src/test/resources/parameters/DistributionConfigParameters_InvalidRestServerPort.json
@@ -0,0 +1,53 @@
+{
+    "name":"SDCDistributionGroup",
+    "restServerParameters":{
+        "host":"0.0.0.0",
+        "port":-1,
+        "userName":"healthcheck",
+        "password":"zb!XztG34"
+    },
+    "receptionHandlerParameters":{
+        "SDCReceptionHandler":{
+            "receptionHandlerType":"SDC",
+            "receptionHandlerClassName":"org.onap.policy.distribution.reception.handling.sdc.SdcReceptionHandler",
+            "pssdConfiguration":{
+                "asdcAddress": "localhost",
+                "messageBusAddress": [
+                    "a.com",
+                    "b.com",
+                    "c.com"
+                 ],
+                "user": "tbdsdc-1480",
+                "password": "tbdsdc-1480",
+                "pollingInterval":20,
+                "pollingTimeout":30,
+                "consumerId": "policy-id",
+                "artifactTypes": [
+                    "TOSCA_CSAR",
+                    "HEAT"
+                ],
+                "consumerGroup": "policy-group",
+                "environmentName": "environmentName",
+                "keystorePath": "null",
+                "keystorePassword": "null",
+                "activeserverTlsAuth": false,
+                "isFilterinEmptyResources": true,
+                "isUseHttpsWithDmaap": false
+            },
+            "pluginHandlerParameters":{
+                "policyDecoders":{
+                    "TOSCADecoder":{
+                        "decoderType":"TOSCA",
+                        "decoderClassName":"org.onap.policy.distribution.reception.decoding.pdpx.PolicyDecoderToscaPdpx"
+                    }
+                },
+                "policyForwarders":{
+                    "PAPEngineForwarder":{
+                        "forwarderType":"PAPEngine",
+                        "forwarderClassName":"org.onap.policy.distribution.forwarding.pap.engine.XacmlPapServletPolicyForwarder"
+                    }
+                }
+            }
+        }
+    }
+}
diff --git a/main/src/test/resources/parameters/DistributionConfigParameters_InvalidRestServerUser.json b/main/src/test/resources/parameters/DistributionConfigParameters_InvalidRestServerUser.json
new file mode 100644
index 00000000..d58c035b
--- /dev/null
+++ b/main/src/test/resources/parameters/DistributionConfigParameters_InvalidRestServerUser.json
@@ -0,0 +1,53 @@
+{
+    "name":"SDCDistributionGroup",
+    "restServerParameters":{
+        "host":"0.0.0.0",
+        "port":6969,
+        "userName":"",
+        "password":"zb!XztG34"
+    },
+    "receptionHandlerParameters":{
+        "SDCReceptionHandler":{
+            "receptionHandlerType":"SDC",
+            "receptionHandlerClassName":"org.onap.policy.distribution.reception.handling.sdc.SdcReceptionHandler",
+            "pssdConfiguration":{
+                "asdcAddress": "localhost",
+                "messageBusAddress": [
+                    "a.com",
+                    "b.com",
+                    "c.com"
+                 ],
+                "user": "tbdsdc-1480",
+                "password": "tbdsdc-1480",
+                "pollingInterval":20,
+                "pollingTimeout":30,
+                "consumerId": "policy-id",
+                "artifactTypes": [
+                    "TOSCA_CSAR",
+                    "HEAT"
+                ],
+                "consumerGroup": "policy-group",
+                "environmentName": "environmentName",
+                "keystorePath": "null",
+                "keystorePassword": "null",
+                "activeserverTlsAuth": false,
+                "isFilterinEmptyResources": true,
+                "isUseHttpsWithDmaap": false
+            },
+            "pluginHandlerParameters":{
+                "policyDecoders":{
+                    "TOSCADecoder":{
+                        "decoderType":"TOSCA",
+                        "decoderClassName":"org.onap.policy.distribution.reception.decoding.pdpx.PolicyDecoderToscaPdpx"
+                    }
+                },
+                "policyForwarders":{
+                    "PAPEngineForwarder":{
+                        "forwarderType":"PAPEngine",
+                        "forwarderClassName":"org.onap.policy.distribution.forwarding.pap.engine.XacmlPapServletPolicyForwarder"
+                    }
+                }
+            }
+        }
+    }
+}
diff --git a/main/src/test/resources/parameters/DistributionConfigParameters_NoPolicyDecoder.json b/main/src/test/resources/parameters/DistributionConfigParameters_NoPolicyDecoder.json
index 06d18674..530a86d8 100644
--- a/main/src/test/resources/parameters/DistributionConfigParameters_NoPolicyDecoder.json
+++ b/main/src/test/resources/parameters/DistributionConfigParameters_NoPolicyDecoder.json
@@ -1,5 +1,11 @@
 {
     "name":"SDCDistributionGroup",
+    "restServerParameters":{
+        "host":"0.0.0.0",
+        "port":6969,
+        "userName":"healthcheck",
+        "password":"zb!XztG34"
+    },
     "receptionHandlerParameters":{
         "SDCReceptionHandler":{
             "receptionHandlerType":"SDC",
diff --git a/main/src/test/resources/parameters/DistributionConfigParameters_NoPolicyForwarder.json b/main/src/test/resources/parameters/DistributionConfigParameters_NoPolicyForwarder.json
index d8343b19..6b6d6771 100644
--- a/main/src/test/resources/parameters/DistributionConfigParameters_NoPolicyForwarder.json
+++ b/main/src/test/resources/parameters/DistributionConfigParameters_NoPolicyForwarder.json
@@ -1,5 +1,11 @@
 {
     "name":"SDCDistributionGroup",
+    "restServerParameters":{
+        "host":"0.0.0.0",
+        "port":6969,
+        "userName":"healthcheck",
+        "password":"zb!XztG34"
+    },
     "receptionHandlerParameters":{
         "SDCReceptionHandler":{
             "receptionHandlerType":"SDC",
diff --git a/main/src/test/resources/parameters/DistributionConfigParameters_NoReceptionHandler.json b/main/src/test/resources/parameters/DistributionConfigParameters_NoReceptionHandler.json
index 8b0997ca..b91e95d8 100644
--- a/main/src/test/resources/parameters/DistributionConfigParameters_NoReceptionHandler.json
+++ b/main/src/test/resources/parameters/DistributionConfigParameters_NoReceptionHandler.json
@@ -1,3 +1,9 @@
 {
-    "name":"SDCDistributionGroup"
+    "name":"SDCDistributionGroup",
+    "restServerParameters":{
+        "host":"0.0.0.0",
+        "port":6969,
+        "userName":"healthcheck",
+        "password":"zb!XztG34"
+    }
 }
\ No newline at end of file
diff --git a/main/src/test/resources/parameters/MinimumParameters.json b/main/src/test/resources/parameters/MinimumParameters.json
index 18cd529c..95359b88 100644
--- a/main/src/test/resources/parameters/MinimumParameters.json
+++ b/main/src/test/resources/parameters/MinimumParameters.json
@@ -1,5 +1,11 @@
 {  
     "name":"SDCDistributionGroup",
+    "restServerParameters":{
+        "host":"0.0.0.0",
+        "port":6969,
+        "userName":"healthcheck",
+        "password":"zb!XztG34"
+    },
     "receptionHandlerParameters":{  
         "SDCReceptionHandler":{  
             "receptionHandlerType":"SDC",
diff --git a/main/src/test/resources/parameters/NoParameters.json b/main/src/test/resources/parameters/NoParameters.json
index 7a73a41b..6b0805d3 100644
--- a/main/src/test/resources/parameters/NoParameters.json
+++ b/main/src/test/resources/parameters/NoParameters.json
@@ -1,2 +1,8 @@
 {
+    "restServerParameters":{
+        "host":"0.0.0.0",
+        "port":6969,
+        "userName":"healthcheck",
+        "password":"zb!XztG34"
+    }
 }
\ No newline at end of file