migrate model-impl from drools-applications

migrate controlloop/common/model-impl from drools-applicaitons to
policy/models

Issue-ID: POLICY-1264
Change-Id: Ibe0bb5c49a7b1344f4104b30455f52834041e187
Signed-off-by: Hengye <yehui.wang@est.tech>

8 files changed, 636 insertions, 0 deletions

diff --git a/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/VfcHealActionVmInfo.java b/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/VfcHealActionVmInfo.java
new file mode 100644
index 000000000..8ca08beb2
--- /dev/null
+++ b/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/VfcHealActionVmInfo.java
@@ -0,0 +1,56 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2017-2019 Intel Corp. All rights reserved.
+ * Modifications Copyright (C) 2019 Nordix Foundation.
+ * Modifications Copyright (C) 2018-2019 AT&T Corporation. 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.vfc;
+
+import com.google.gson.annotations.SerializedName;
+
+import java.io.Serializable;
+
+public class VfcHealActionVmInfo implements Serializable {
+
+    private static final long serialVersionUID = 3208673205100673119L;
+
+    @SerializedName("vmid")
+    private String vmid;
+
+    @SerializedName("vmname")
+    private String vmname;
+
+    public VfcHealActionVmInfo() {
+        // Default constructor
+    }
+
+    public String getVmid() {
+        return vmid;
+    }
+
+    public void setVmid(String vmid) {
+        this.vmid = vmid;
+    }
+
+    public String getVmname() {
+        return vmname;
+    }
+
+    public void setVmname(String vmname) {
+        this.vmname = vmname;
+    }
+}
diff --git a/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/VfcHealAdditionalParams.java b/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/VfcHealAdditionalParams.java
new file mode 100644
index 000000000..f722beeea
--- /dev/null
+++ b/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/VfcHealAdditionalParams.java
@@ -0,0 +1,56 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2017-2019 Intel Corp. All rights reserved.
+ * Modifications Copyright (C) 2019 Nordix Foundation.
+ * Modifications Copyright (C) 2018-2019 AT&T Corporation. 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.vfc;
+
+import com.google.gson.annotations.SerializedName;
+
+import java.io.Serializable;
+
+public class VfcHealAdditionalParams implements Serializable {
+
+    private static final long serialVersionUID = 2656694137285096191L;
+
+    @SerializedName("action")
+    private String action;
+
+    @SerializedName("actionvminfo")
+    private VfcHealActionVmInfo actionInfo;
+
+    public VfcHealAdditionalParams() {
+        // Default constructor
+    }
+
+    public String getAction() {
+        return action;
+    }
+
+    public void setAction(String action) {
+        this.action = action;
+    }
+
+    public VfcHealActionVmInfo getActionInfo() {
+        return actionInfo;
+    }
+
+    public void setActionInfo(VfcHealActionVmInfo actionInfo) {
+        this.actionInfo = actionInfo;
+    }
+}
diff --git a/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/VfcHealRequest.java b/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/VfcHealRequest.java
new file mode 100644
index 000000000..0d4b03821
--- /dev/null
+++ b/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/VfcHealRequest.java
@@ -0,0 +1,67 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2017-2019 Intel Corp. All rights reserved.
+ * Modifications Copyright (C) 2019 Nordix Foundation.
+ * Modifications Copyright (C) 2018-2019 AT&T Corporation. 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.vfc;
+
+import com.google.gson.annotations.SerializedName;
+
+import java.io.Serializable;
+
+public class VfcHealRequest implements Serializable {
+
+    private static final long serialVersionUID = -7341931593089709247L;
+
+    @SerializedName("vnfInstanceId")
+    private String vnfInstanceId;
+
+    @SerializedName("cause")
+    private String cause;
+
+    @SerializedName("additionalParams")
+    private VfcHealAdditionalParams additionalParams;
+
+    public VfcHealRequest() {
+        // Default constructor
+    }
+
+    public String getVnfInstanceId() {
+        return vnfInstanceId;
+    }
+
+    public void setVnfInstanceId(String vnfInstanceId) {
+        this.vnfInstanceId = vnfInstanceId;
+    }
+
+    public String getCause() {
+        return cause;
+    }
+
+    public void setCause(String cause) {
+        this.cause = cause;
+    }
+
+    public VfcHealAdditionalParams getAdditionalParams() {
+        return additionalParams;
+    }
+
+    public void setAdditionalParams(VfcHealAdditionalParams additionalParams) {
+        this.additionalParams = additionalParams;
+    }
+}
diff --git a/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/VfcManager.java b/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/VfcManager.java
new file mode 100644
index 000000000..695b1b189
--- /dev/null
+++ b/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/VfcManager.java
@@ -0,0 +1,191 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2017-2019 Intel Corp. All rights reserved.
+ * Modifications Copyright (C) 2019 Nordix Foundation.
+ * Modifications Copyright (C) 2018-2019 AT&T Corporation. All rights reserved.
+ * Modifications Copyright (C) 2019 Samsung Electronics Co., Ltd.
+ * ================================================================================
+ * 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.vfc;
+
+import com.google.gson.JsonSyntaxException;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.drools.core.WorkingMemory;
+import org.onap.policy.common.endpoints.event.comm.Topic.CommInfrastructure;
+import org.onap.policy.common.endpoints.utils.NetLoggerUtil;
+import org.onap.policy.common.endpoints.utils.NetLoggerUtil.EventType;
+import org.onap.policy.drools.system.PolicyEngine;
+import org.onap.policy.rest.RestManager;
+import org.onap.policy.rest.RestManager.Pair;
+import org.onap.policy.vfc.util.Serialization;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public final class VfcManager implements Runnable {
+
+    private String vfcUrlBase;
+    private String username;
+    private String password;
+    private VfcRequest vfcRequest;
+    private WorkingMemory workingMem;
+    private static final Logger logger = LoggerFactory.getLogger(VfcManager.class);
+
+    // The REST manager used for processing REST calls for this VFC manager
+    private RestManager restManager;
+
+    /**
+     * Constructor.
+     *
+     * @param wm Drools working memory
+     * @param request request
+     */
+    public VfcManager(WorkingMemory wm, VfcRequest request) {
+        if (wm == null || request == null) {
+            throw new IllegalArgumentException(
+                    "the parameters \"wm\" and \"request\" on the VfcManager constructor may not be null");
+        }
+        workingMem = wm;
+        vfcRequest = request;
+
+        restManager = new RestManager();
+
+        // use getPEManagerEnvProperty() for required properties; others are optional
+        setVfcParams(getPeManagerEnvProperty("vfc.url"), PolicyEngine.manager.getEnvironmentProperty("vfc.username"),
+                PolicyEngine.manager.getEnvironmentProperty("vfc.password"));
+    }
+
+    /**
+     * Set the parameters.
+     *
+     * @param baseUrl base URL
+     * @param name username
+     * @param pwd password
+     */
+    public void setVfcParams(String baseUrl, String name, String pwd) {
+        vfcUrlBase = baseUrl + "/api/nslcm/v1";
+        username = name;
+        password = pwd;
+    }
+
+    @Override
+    public void run() {
+        Map<String, String> headers = new HashMap<>();
+        Pair<Integer, String> httpDetails;
+
+        VfcResponse responseError = new VfcResponse();
+        responseError.setResponseDescriptor(new VfcResponseDescriptor());
+        responseError.getResponseDescriptor().setStatus("error");
+
+        headers.put("Accept", "application/json");
+        String vfcUrl = vfcUrlBase + "/ns/" + vfcRequest.getNsInstanceId() + "/heal";
+        try {
+            String vfcRequestJson = Serialization.gsonPretty.toJson(vfcRequest);
+            NetLoggerUtil.log(EventType.OUT, CommInfrastructure.REST, vfcUrl, vfcRequestJson);
+
+            httpDetails = restManager.post(vfcUrl, username, password, headers, "application/json", vfcRequestJson);
+        } catch (Exception e) {
+            logger.error(e.getMessage(), e);
+            workingMem.insert(responseError);
+            return;
+        }
+
+        if (httpDetails == null) {
+            workingMem.insert(responseError);
+            return;
+        }
+
+        if (httpDetails.first != 202) {
+            logger.warn("VFC Heal Restcall failed");
+            return;
+        }
+
+        try {
+            VfcResponse response = Serialization.gsonPretty.fromJson(httpDetails.second, VfcResponse.class);
+            NetLoggerUtil.log(EventType.IN, CommInfrastructure.REST, vfcUrl, httpDetails.second);
+            String body = Serialization.gsonPretty.toJson(response);
+            logger.debug("Response to VFC Heal post:");
+            logger.debug(body);
+
+            String jobId = response.getJobId();
+            int attemptsLeft = 20;
+
+            String urlGet = vfcUrlBase + "/jobs/" + jobId;
+            VfcResponse responseGet = null;
+
+            while (attemptsLeft-- > 0) {
+                NetLoggerUtil.getNetworkLogger().info("[OUT|{}|{}|]", "VFC", urlGet);
+                Pair<Integer, String> httpDetailsGet = restManager.get(urlGet, username, password, headers);
+                responseGet = Serialization.gsonPretty.fromJson(httpDetailsGet.second, VfcResponse.class);
+                NetLoggerUtil.log(EventType.IN, CommInfrastructure.REST, vfcUrl, httpDetailsGet.second);
+                responseGet.setRequestId(vfcRequest.getRequestId().toString());
+                body = Serialization.gsonPretty.toJson(responseGet);
+                logger.debug("Response to VFC Heal get:");
+                logger.debug(body);
+
+                String responseStatus = responseGet.getResponseDescriptor().getStatus();
+                if (httpDetailsGet.first == 200
+                        && ("finished".equalsIgnoreCase(responseStatus) || "error".equalsIgnoreCase(responseStatus))) {
+                    logger.debug("VFC Heal Status {}", responseGet.getResponseDescriptor().getStatus());
+                    workingMem.insert(responseGet);
+                    break;
+                }
+                Thread.sleep(20000);
+            }
+            if ((attemptsLeft <= 0) && (responseGet != null) && (responseGet.getResponseDescriptor() != null)
+                    && (responseGet.getResponseDescriptor().getStatus() != null)
+                    && (!responseGet.getResponseDescriptor().getStatus().isEmpty())) {
+                logger.debug("VFC timeout. Status: ({})", responseGet.getResponseDescriptor().getStatus());
+                workingMem.insert(responseGet);
+            }
+        } catch (JsonSyntaxException e) {
+            logger.error("Failed to deserialize into VfcResponse {}", e.getLocalizedMessage(), e);
+        } catch (InterruptedException e) {
+            logger.error("Interrupted exception: {}", e.getLocalizedMessage(), e);
+            Thread.currentThread().interrupt();
+        } catch (Exception e) {
+            logger.error("Unknown error deserializing into VfcResponse {}", e.getLocalizedMessage(), e);
+        }
+    }
+
+    /**
+     * Protected setter for rest manager to allow mocked rest manager to be used for testing.
+     *
+     * @param restManager the test REST manager
+     */
+    protected void setRestManager(final RestManager restManager) {
+        this.restManager = restManager;
+    }
+
+    /**
+     * This method reads and validates environmental properties coming from the policy engine. Null
+     * properties cause an {@link IllegalArgumentException} runtime exception to be thrown
+     *
+     * @param string the name of the parameter to retrieve
+     * @return the property value
+     */
+
+    private String getPeManagerEnvProperty(String enginePropertyName) {
+        String enginePropertyValue = PolicyEngine.manager.getEnvironmentProperty(enginePropertyName);
+        if (enginePropertyValue == null) {
+            throw new IllegalArgumentException("The value of policy engine manager environment property \""
+                    + enginePropertyName + "\" may not be null");
+        }
+        return enginePropertyValue;
+    }
+}
diff --git a/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/VfcRequest.java b/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/VfcRequest.java
new file mode 100644
index 000000000..cf0d95065
--- /dev/null
+++ b/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/VfcRequest.java
@@ -0,0 +1,65 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2017-2019 Intel Corp. All rights reserved.
+ * Modifications Copyright (C) 2019 Nordix Foundation.
+ * Modifications Copyright (C) 2018-2019 AT&T Corporation. 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.vfc;
+
+import com.google.gson.annotations.SerializedName;
+
+import java.io.Serializable;
+import java.util.UUID;
+
+public class VfcRequest implements Serializable {
+
+    private static final long serialVersionUID = 3736300970326332512L;
+    // These fields are not serialized and not part of JSON
+    private transient String nsInstanceId;
+    private transient UUID requestId;
+
+    @SerializedName("healVnfData")
+    private VfcHealRequest healRequest;
+
+    public VfcRequest() {
+        // Default constructor
+    }
+
+    public String getNsInstanceId() {
+        return nsInstanceId;
+    }
+
+    public void setNsInstanceId(String nsInstanceId) {
+        this.nsInstanceId = nsInstanceId;
+    }
+
+    public UUID getRequestId() {
+        return requestId;
+    }
+
+    public void setRequestId(UUID requestId) {
+        this.requestId = requestId;
+    }
+
+    public VfcHealRequest getHealRequest() {
+        return healRequest;
+    }
+
+    public void setHealRequest(VfcHealRequest healRequest) {
+        this.healRequest = healRequest;
+    }
+}
diff --git a/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/VfcResponse.java b/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/VfcResponse.java
new file mode 100644
index 000000000..d13e14bec
--- /dev/null
+++ b/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/VfcResponse.java
@@ -0,0 +1,66 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2017-2019 Intel Corp. All rights reserved.
+ * Modifications Copyright (C) 2019 Nordix Foundation.
+ * Modifications Copyright (C) 2018-2019 AT&T Corporation. 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.vfc;
+
+import com.google.gson.annotations.SerializedName;
+
+import java.io.Serializable;
+
+public class VfcResponse implements Serializable {
+
+    private static final long serialVersionUID = 9151443891238218455L;
+
+    @SerializedName("jobId")
+    private String jobId;
+
+    @SerializedName("responseDescriptor")
+    private VfcResponseDescriptor responseDescriptor;
+
+    private transient String requestId;
+
+    public VfcResponse() {
+        // Default constructor
+    }
+
+    public String getJobId() {
+        return jobId;
+    }
+
+    public void setJobId(String jobId) {
+        this.jobId = jobId;
+    }
+
+    public VfcResponseDescriptor getResponseDescriptor() {
+        return responseDescriptor;
+    }
+
+    public void setResponseDescriptor(VfcResponseDescriptor responseDescriptor) {
+        this.responseDescriptor = responseDescriptor;
+    }
+
+    public String getRequestId() {
+        return requestId;
+    }
+
+    public void setRequestId(String requestId) {
+        this.requestId = requestId;
+    }
+}
diff --git a/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/VfcResponseDescriptor.java b/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/VfcResponseDescriptor.java
new file mode 100644
index 000000000..8fff683b6
--- /dev/null
+++ b/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/VfcResponseDescriptor.java
@@ -0,0 +1,101 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2017-2019 Intel Corp. All rights reserved.
+ * Modifications Copyright (C) 2019 Nordix Foundation.
+ * Modifications Copyright (C) 2018-2019 AT&T Corporation. 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.vfc;
+
+import com.google.gson.annotations.SerializedName;
+
+import java.io.Serializable;
+import java.util.List;
+
+public class VfcResponseDescriptor implements Serializable {
+
+    private static final long serialVersionUID = 6827782899144150158L;
+
+    @SerializedName("progress")
+    private String progress;
+
+    @SerializedName("status")
+    private String status;
+
+    @SerializedName("statusDescription")
+    private String statusDescription;
+
+    @SerializedName("errorCode")
+    private String errorCode;
+
+    @SerializedName("responseId")
+    private String responseId;
+
+    @SerializedName("responseHistoryList")
+    private List<VfcResponseDescriptor> responseHistoryList;
+
+    public VfcResponseDescriptor() {
+        // Default constructor
+    }
+
+    public String getStatus() {
+        return status;
+    }
+
+    public String getProgress() {
+        return progress;
+    }
+
+    public void setProgress(String progress) {
+        this.progress = progress;
+    }
+
+    public String getStatusDescription() {
+        return statusDescription;
+    }
+
+    public void setStatusDescription(String statusDescription) {
+        this.statusDescription = statusDescription;
+    }
+
+    public String getErrorCode() {
+        return errorCode;
+    }
+
+    public void setErrorCode(String errorCode) {
+        this.errorCode = errorCode;
+    }
+
+    public String getResponseId() {
+        return responseId;
+    }
+
+    public void setResponseId(String responseId) {
+        this.responseId = responseId;
+    }
+
+    public List<VfcResponseDescriptor> getResponseHistoryList() {
+        return responseHistoryList;
+    }
+
+    public void setResponseHistoryList(List<VfcResponseDescriptor> responseHistoryList) {
+        this.responseHistoryList = responseHistoryList;
+    }
+
+    public void setStatus(String status) {
+        this.status = status;
+    }
+}
diff --git a/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/util/Serialization.java b/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/util/Serialization.java
new file mode 100644
index 000000000..a0eaad037
--- /dev/null
+++ b/models-interactions/model-impl/vfc/src/main/java/org/onap/policy/vfc/util/Serialization.java
@@ -0,0 +1,34 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2017-2019 Intel Corp. All rights reserved.
+ * Modifications Copyright (C) 2019 Nordix Foundation.
+ * Modifications Copyright (C) 2018 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.vfc.util;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+
+public final class Serialization {
+    public static final Gson gsonPretty = new GsonBuilder().disableHtmlEscaping()
+            .setPrettyPrinting()
+            .create();
+
+    private Serialization() {
+    }
+
+}