Implement policy provider functions

Includes:
a) Implement policy provider functions
b) Implement policy type provider functions
c) Implement legacy guard policy provider functions
d) Implement legacy operational policy provider functions
e) Modify API endpoints to align with provider functions
f) Hook up API statistics counter

Junit tests for providers and new endpoints will be in next patch/review.

Issue-ID: POLICY-1441
Change-Id: I113de95f6e0ea5f5436c072536f5e9a178988e5e
Signed-off-by: Chenfei Gao <cgao@research.att.com>

11 files changed, 387 insertions, 17 deletions

diff --git a/main/src/test/resources/META-INF/persistence.xml b/main/src/test/resources/META-INF/persistence.xml
new file mode 100644
index 00000000..23e8567f
--- /dev/null
+++ b/main/src/test/resources/META-INF/persistence.xml
@@ -0,0 +1,74 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ============LICENSE_START=======================================================
+   Copyright (C) 2019 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=========================================================
+-->
+
+<persistence xmlns="http://java.sun.com/xml/ns/persistence" version="2.0">
+    <persistence-unit name="ToscaConceptTest" transaction-type="RESOURCE_LOCAL">
+        <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
+
+        <class>org.onap.policy.models.dao.converters.CDataConditioner</class>
+        <class>org.onap.policy.models.dao.converters.Uuid2String</class>
+        <class>org.onap.policy.models.base.PfConceptKey</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaPolicyType</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaPolicy</class>
+
+        <properties>
+            <property name="javax.persistence.jdbc.driver" value="org.h2.Driver" />
+            <property name="javax.persistence.jdbc.url" value="jdbc:h2:mem:testdb" />
+            <property name="javax.persistence.jdbc.user" value="policy" />
+            <property name="javax.persistence.jdbc.password" value="P01icY" />
+            <property name="eclipselink.ddl-generation" value="drop-and-create-tables" />
+            <property name="eclipselink.ddl-generation.output-mode" value="database" />
+            <property name="eclipselink.logging.level" value="INFO" />
+        </properties>
+    </persistence-unit>
+
+    <persistence-unit name="ToscaConceptMariaDBTest" transaction-type="RESOURCE_LOCAL">
+        <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
+
+        <class>org.onap.policy.models.dao.converters.CDataConditioner</class>
+        <class>org.onap.policy.models.dao.converters.Uuid2String</class>
+        <class>org.onap.policy.models.base.PfConceptKey</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaPolicy</class>
+
+        <properties>
+            <property name="javax.persistence.jdbc.driver" value="org.mariadb.jdbc.Driver" />
+            <property name="javax.persistence.jdbc.url" value="jdbc:mariadb://localhost:3306/policy" />
+            <property name="javax.persistence.jdbc.user" value="policy" />
+            <property name="javax.persistence.jdbc.password" value="P01icY" />
+            <property name="javax.persistence.schema-generation.database.action" value="create" />
+
+            <!-- property name="eclipselink.logging.level" value="ALL" />
+            <property name="eclipselink.logging.level.jpa" value="ALL" />
+            <property name="eclipselink.logging.level.ddl" value="ALL" />
+            <property name="eclipselink.logging.level.connection" value="ALL" />
+            <property name="eclipselink.logging.level.sql" value="ALL" />
+            <property name="eclipselink.logging.level.transaction" value="ALL" />
+            <property name="eclipselink.logging.level.sequencing" value="ALL" />
+            <property name="eclipselink.logging.level.server" value="ALL" />
+            <property name="eclipselink.logging.level.query" value="ALL" />
+            <property name="eclipselink.logging.level.properties" value="ALL" /-->
+
+            <property name="eclipselink.ddl-generation" value="drop-and-create-tables" />
+            <property name="eclipselink.ddl-generation.output-mode" value="database" />
+            <property name="eclipselink.logging.level" value="INFO" />
+        </properties>
+    </persistence-unit>
+</persistence>
diff --git a/main/src/test/resources/parameters/ApiConfigParameters.json b/main/src/test/resources/parameters/ApiConfigParameters.json
index 8fae1238..c64271c7 100644
--- a/main/src/test/resources/parameters/ApiConfigParameters.json
+++ b/main/src/test/resources/parameters/ApiConfigParameters.json
@@ -5,5 +5,13 @@
         "port":6969,
         "userName":"healthcheck",
         "password":"zb!XztG34"
+    },
+    "databaseProviderParameters": {
+        "name": "PolicyProviderParameterGroup",
+        "implementation": "org.onap.policy.models.provider.impl.DatabasePolicyModelsProviderImpl",
+        "databaseUrl": "jdbc:mariadb://localhost:3306/policy",
+        "databaseUser": "policy",
+        "databasePassword": "UDAxaWNZ",
+        "persistenceUnit": "ToscaConceptMariaDBTest"
     }
 }
diff --git a/main/src/test/resources/parameters/ApiConfigParameters_Https.json b/main/src/test/resources/parameters/ApiConfigParameters_Https.json
index ec732132..878dc1ff 100644
--- a/main/src/test/resources/parameters/ApiConfigParameters_Https.json
+++ b/main/src/test/resources/parameters/ApiConfigParameters_Https.json
@@ -6,5 +6,13 @@
         "userName":"healthcheck",
         "password":"zb!XztG34",
         "https":true
+    },
+    "databaseProviderParameters": {
+        "name": "PolicyProviderParameterGroup",
+        "implementation": "org.onap.policy.models.provider.impl.DatabasePolicyModelsProviderImpl",
+        "databaseUrl": "jdbc:h2:mem:testdb",
+        "databaseUser": "policy",
+        "databasePassword": "UDAxaWNZ",
+        "persistenceUnit": "ToscaConceptTest"
     }
 }
diff --git a/main/src/test/resources/parameters/ApiConfigParameters_InvalidRestServerParameters.json b/main/src/test/resources/parameters/ApiConfigParameters_InvalidRestServerParameters.json
index 2d394fbc..67e461e0 100644
--- a/main/src/test/resources/parameters/ApiConfigParameters_InvalidRestServerParameters.json
+++ b/main/src/test/resources/parameters/ApiConfigParameters_InvalidRestServerParameters.json
@@ -5,5 +5,13 @@
         "port":-1,
         "userName":"",
         "password":""
+    },
+    "databaseProviderParameters": {
+        "name": "PolicyProviderParameterGroup",
+        "implementation": "org.onap.policy.models.provider.impl.DatabasePolicyModelsProviderImpl",
+        "databaseUrl": "jdbc:h2:mem:testdb",
+        "databaseUser": "policy",
+        "databasePassword": "UDAxaWNZ",
+        "persistenceUnit": "ToscaConceptTest"
     }
 }
diff --git a/main/src/test/resources/parameters/MinimumParameters.json b/main/src/test/resources/parameters/MinimumParameters.json
index 61c6c869..2600d20f 100644
--- a/main/src/test/resources/parameters/MinimumParameters.json
+++ b/main/src/test/resources/parameters/MinimumParameters.json
@@ -5,5 +5,13 @@
         "port":6969,
         "userName":"healthcheck",
         "password":"zb!XztG34"
+    },
+    "databaseProviderParameters": {
+        "name": "PolicyProviderParameterGroup",
+        "implementation": "org.onap.policy.models.provider.impl.DatabasePolicyModelsProviderImpl",
+        "databaseUrl": "jdbc:h2:mem:testdb",
+        "databaseUser": "policy",
+        "databasePassword": "UDAxaWNZ",
+        "persistenceUnit": "ToscaConceptTest"
     }
 }
diff --git a/main/src/test/resources/parameters/NoParameters.json b/main/src/test/resources/parameters/NoParameters.json
index 6b0805d3..ed2fbde2 100644
--- a/main/src/test/resources/parameters/NoParameters.json
+++ b/main/src/test/resources/parameters/NoParameters.json
@@ -4,5 +4,13 @@
         "port":6969,
         "userName":"healthcheck",
         "password":"zb!XztG34"
+    },
+    "databaseProviderParameters": {
+        "name": "PolicyProviderParameterGroup",
+        "implementation": "org.onap.policy.models.provider.impl.DatabasePolicyModelsProviderImpl",
+        "databaseUrl": "jdbc:h2:mem:testdb",
+        "databaseUser": "policy",
+        "databasePassword": "UDAxaWNZ",
+        "persistenceUnit": "ToscaConceptTest"
     }
 }
\ No newline at end of file
diff --git a/main/src/test/resources/policies/vDNS.policy.guard.minmax.input.json b/main/src/test/resources/policies/vDNS.policy.guard.minmax.input.json
index c62a229a..2dbfe8ce 100644
--- a/main/src/test/resources/policies/vDNS.policy.guard.minmax.input.json
+++ b/main/src/test/resources/policies/vDNS.policy.guard.minmax.input.json
@@ -1,5 +1,4 @@
 {
-{
   "policy-id" : "guard.minmax.scaleout",
   "contents" : {
         "actor": "SO",
diff --git a/main/src/test/resources/policytypes/onap.policies.monitoring.dcaegen2.collectors.datafile.datafile-app-server.json b/main/src/test/resources/policytypes/onap.policies.monitoring.dcaegen2.collectors.datafile.datafile-app-server.json
new file mode 100644
index 00000000..26f4c021
--- /dev/null
+++ b/main/src/test/resources/policytypes/onap.policies.monitoring.dcaegen2.collectors.datafile.datafile-app-server.json
@@ -0,0 +1,28 @@
+{
+  "tosca_definitions_version": "tosca_simple_yaml_1_0_0",
+  "policy_types": [
+    {
+      "onap.policies.Monitoring": {
+        "derived_from": "tosca.policies.Root",
+        "description": "a base policy type for all policies that govern monitoring provision",
+        "version": "1.0.0"
+      }
+    },
+    {
+      "onap.policies.monitoring.dcaegen2.collectors.datafile.datafile-app-server": {
+        "derived_from": "policy.nodes.Root",
+        "version": "1.0.0",
+        "properties": {
+          "buscontroller_feed_publishing_endpoint": {
+            "type": "string",
+            "description": "DMAAP Bus Controller feed endpoint"
+          },
+          "datafile.policy": {
+            "type": "string",
+            "description": "datafile Policy JSON as string"
+          }
+        }
+      }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/main/src/test/resources/policytypes/onap.policies.monitoring.dcaegen2.collectors.datafile.datafile-app-server.yaml b/main/src/test/resources/policytypes/onap.policies.monitoring.dcaegen2.collectors.datafile.datafile-app-server.yaml
index 5a093ddb..63796fa3 100644
--- a/main/src/test/resources/policytypes/onap.policies.monitoring.dcaegen2.collectors.datafile.datafile-app-server.yaml
+++ b/main/src/test/resources/policytypes/onap.policies.monitoring.dcaegen2.collectors.datafile.datafile-app-server.yaml
@@ -1,17 +1,18 @@
 tosca_definitions_version: tosca_simple_yaml_1_0_0
 policy_types:
-  version: 1.0.0
-  onap.policies.Monitoring:
-    derived_from: tosca.policies.Root
-    description: a base policy type for all policies that govern monitoring provision
-    version: 1.0.0
-  onap.policies.monitoring.dcaegen2.collectors.datafile.datafile-app-server:
-    derived_from: policy.nodes.Root
-    version: 1.0.0
-    properties:
-      buscontroller_feed_publishing_endpoint:
-        type: string
-        description: DMAAP Bus Controller feed endpoint
-      datafile.policy:
-        type: string
-        description: datafile Policy JSON as string
+  -
+    onap.policies.Monitoring:
+        derived_from: tosca.policies.Root
+        description: a base policy type for all policies that govern monitoring provision
+        version: 1.0.0
+  -
+    onap.policies.monitoring.dcaegen2.collectors.datafile.datafile-app-server:
+        derived_from: policy.nodes.Root
+        version: 1.0.0
+        properties:
+            buscontroller_feed_publishing_endpoint:
+                type: string
+                description: DMAAP Bus Controller feed endpoint
+            datafile.policy:
+                type: string
+                description: datafile Policy JSON as string
\ No newline at end of file
diff --git a/main/src/test/resources/policytypes/onap.policy.monitoring.cdap.tca.hi.lo.app.json b/main/src/test/resources/policytypes/onap.policy.monitoring.cdap.tca.hi.lo.app.json
new file mode 100644
index 00000000..95d7a53b
--- /dev/null
+++ b/main/src/test/resources/policytypes/onap.policy.monitoring.cdap.tca.hi.lo.app.json
@@ -0,0 +1,223 @@
+{
+  "tosca_definitions_version": "tosca_simple_yaml_1_0_0",
+  "policy_types": [
+    {
+      "onap.policies.Monitoring": {
+        "derived_from": "tosca.policies.Root",
+        "description": "a base policy type for all policies that governs monitoring provisioning"
+      }
+    },
+    {
+      "onap.policy.monitoring.cdap.tca.hi.lo.app": {
+        "derived_from": "onap.policies.Monitoring",
+        "version": "1.0.0",
+        "properties": {
+          "tca_policy": {
+            "type": "map",
+            "description": "TCA Policy JSON",
+            "entry_schema": {
+              "type": "onap.datatypes.monitoring.tca_policy"
+            }
+          }
+        }
+      }
+    }
+  ],
+  "data_types": [
+    {
+      "onap.datatypes.monitoring.metricsPerEventName": {
+        "derived_from": "tosca.datatypes.Root",
+        "properties": {
+          "controlLoopSchemaType": {
+            "type": "string",
+            "required": true,
+            "description": "Specifies Control Loop Schema Type for the event Name e.g. VNF, VM",
+            "constraints": [
+              {
+                "valid_values": [
+                  "VM",
+                  "VNF"
+                ]
+              }
+            ]
+          },
+          "eventName": {
+            "type": "string",
+            "required": true,
+            "description": "Event name to which thresholds need to be applied"
+          },
+          "policyName": {
+            "type": "string",
+            "required": true,
+            "description": "TCA Policy Scope Name"
+          },
+          "policyScope": {
+            "type": "string",
+            "required": true,
+            "description": "TCA Policy Scope"
+          },
+          "policyVersion": {
+            "type": "string",
+            "required": true,
+            "description": "TCA Policy Scope Version"
+          },
+          "thresholds": {
+            "type": "list",
+            "required": true,
+            "description": "Thresholds associated with eventName",
+            "entry_schema": {
+              "type": "onap.datatypes.monitoring.thresholds"
+            }
+          }
+        }
+      }
+    },
+    {
+      "onap.datatypes.monitoring.tca_policy": {
+        "derived_from": "tosca.datatypes.Root",
+        "properties": {
+          "domain": {
+            "type": "string",
+            "required": true,
+            "description": "Domain name to which TCA needs to be applied",
+            "default": "measurementsForVfScaling",
+            "constraints": [
+              {
+                "equal": "measurementsForVfScaling"
+              }
+            ]
+          },
+          "metricsPerEventName": {
+            "type": "list",
+            "required": true,
+            "description": "Contains eventName and threshold details that need to be applied to given eventName",
+            "entry_schema": {
+              "type": "onap.datatypes.monitoring.metricsPerEventName"
+            }
+          }
+        }
+      }
+    },
+    {
+      "onap.datatypes.monitoring.thresholds": {
+        "derived_from": "tosca.datatypes.Root",
+        "properties": {
+          "closedLoopControlName": {
+            "type": "string",
+            "required": true,
+            "description": "Closed Loop Control Name associated with the threshold"
+          },
+          "closedLoopEventStatus": {
+            "type": "string",
+            "required": true,
+            "description": "Closed Loop Event Status of the threshold",
+            "constraints": [
+              {
+                "valid_values": [
+                  "ONSET",
+                  "ABATED"
+                ]
+              }
+            ]
+          },
+          "direction": {
+            "type": "string",
+            "required": true,
+            "description": "Direction of the threshold",
+            "constraints": [
+              {
+                "valid_values": [
+                  "LESS",
+                  "LESS_OR_EQUAL",
+                  "GREATER",
+                  "GREATER_OR_EQUAL",
+                  "EQUAL"
+                ]
+              }
+            ]
+          },
+          "fieldPath": {
+            "type": "string",
+            "required": true,
+            "description": "Json field Path as per CEF message which needs to be analyzed for TCA",
+            "constraints": [
+              {
+                "valid_values": [
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].receivedTotalPacketsDelta",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].receivedOctetsDelta",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].receivedUnicastPacketsDelta",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].receivedMulticastPacketsDelta",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].receivedBroadcastPacketsDelta",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].receivedDiscardedPacketsDelta",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].receivedErrorPacketsDelta",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].receivedTotalPacketsAccumulated",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].receivedOctetsAccumulated",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].receivedUnicastPacketsAccumulated",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].receivedMulticastPacketsAccumulated",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].receivedBroadcastPacketsAccumulated",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].receivedDiscardedPacketsAccumulated",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].receivedErrorPacketsAccumulated",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].transmittedTotalPacketsDelta",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].transmittedOctetsDelta",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].transmittedUnicastPacketsDelta",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].transmittedMulticastPacketsDelta",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].transmittedBroadcastPacketsDelta",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].transmittedDiscardedPacketsDelta",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].transmittedErrorPacketsDelta",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].transmittedTotalPacketsAccumulated",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].transmittedOctetsAccumulated",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].transmittedUnicastPacketsAccumulated",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].transmittedMulticastPacketsAccumulated",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].transmittedBroadcastPacketsAccumulated",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].transmittedDiscardedPacketsAccumulated",
+                  "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].transmittedErrorPacketsAccumulated",
+                  "$.event.measurementsForVfScalingFields.cpuUsageArray[*].cpuIdle",
+                  "$.event.measurementsForVfScalingFields.cpuUsageArray[*].cpuUsageInterrupt",
+                  "$.event.measurementsForVfScalingFields.cpuUsageArray[*].cpuUsageNice",
+                  "$.event.measurementsForVfScalingFields.cpuUsageArray[*].cpuUsageSoftIrq",
+                  "$.event.measurementsForVfScalingFields.cpuUsageArray[*].cpuUsageSteal",
+                  "$.event.measurementsForVfScalingFields.cpuUsageArray[*].cpuUsageSystem",
+                  "$.event.measurementsForVfScalingFields.cpuUsageArray[*].cpuWait",
+                  "$.event.measurementsForVfScalingFields.cpuUsageArray[*].percentUsage",
+                  "$.event.measurementsForVfScalingFields.meanRequestLatency",
+                  "$.event.measurementsForVfScalingFields.memoryUsageArray[*].memoryBuffered",
+                  "$.event.measurementsForVfScalingFields.memoryUsageArray[*].memoryCached",
+                  "$.event.measurementsForVfScalingFields.memoryUsageArray[*].memoryConfigured",
+                  "$.event.measurementsForVfScalingFields.memoryUsageArray[*].memoryFree",
+                  "$.event.measurementsForVfScalingFields.memoryUsageArray[*].memoryUsed",
+                  "$.event.measurementsForVfScalingFields.additionalMeasurements[*].arrayOfFields[0].value"
+                ]
+              }
+            ]
+          },
+          "severity": {
+            "type": "string",
+            "required": true,
+            "description": "Threshold Event Severity",
+            "constraints": [
+              {
+                "valid_values": [
+                  "CRITICAL",
+                  "MAJOR",
+                  "MINOR",
+                  "WARNING",
+                  "NORMAL"
+                ]
+              }
+            ]
+          },
+          "thresholdValue": {
+            "type": "integer",
+            "required": true,
+            "description": "Threshold value for the field Path inside CEF message"
+          },
+          "version": {
+            "type": "string",
+            "required": true,
+            "description": "Version number associated with the threshold"
+          }
+        }
+      }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/main/src/test/resources/policytypes/onap.policy.monitoring.cdap.tca.hi.lo.app.yaml b/main/src/test/resources/policytypes/onap.policy.monitoring.cdap.tca.hi.lo.app.yaml
index 699cffd7..f8e9b752 100644
--- a/main/src/test/resources/policytypes/onap.policy.monitoring.cdap.tca.hi.lo.app.yaml
+++ b/main/src/test/resources/policytypes/onap.policy.monitoring.cdap.tca.hi.lo.app.yaml
@@ -1,8 +1,10 @@
 tosca_definitions_version: tosca_simple_yaml_1_0_0
 policy_types:
+  -
     onap.policies.Monitoring:
         derived_from: tosca.policies.Root
         description: a base policy type for all policies that governs monitoring provisioning
+  -
     onap.policy.monitoring.cdap.tca.hi.lo.app:
         derived_from: onap.policies.Monitoring
         version: 1.0.0
@@ -13,6 +15,7 @@ policy_types:
                 entry_schema:
                     type: onap.datatypes.monitoring.tca_policy
 data_types:
+  -
     onap.datatypes.monitoring.metricsPerEventName:
         derived_from: tosca.datatypes.Root
         properties:
@@ -46,6 +49,7 @@ data_types:
                 description: Thresholds associated with eventName
                 entry_schema:
                     type: onap.datatypes.monitoring.thresholds
+  -
     onap.datatypes.monitoring.tca_policy:
         derived_from: tosca.datatypes.Root
         properties:
@@ -62,6 +66,7 @@ data_types:
                 description: Contains eventName and threshold details that need to be applied to given eventName
                 entry_schema:
                     type: onap.datatypes.monitoring.metricsPerEventName
+  -
     onap.datatypes.monitoring.thresholds:
         derived_from: tosca.datatypes.Root
         properties:
@@ -155,4 +160,4 @@ data_types:
             version:
                 type: string
                 required: true
-                description: Version number associated with the threshold
+                description: Version number associated with the threshold
\ No newline at end of file