add subplug for k8s to invoke Artifact forward support

. add forward plugin to forward Artifact
. add test case to cover basic httpPost action
. fix the misuse of List and ArrayList to avoid Null Pointer

Change-Id: I18ead2ba6251a93fddff4657f3945d635a450276
Issue-ID: MULTICLOUD-514
Signed-off-by: liboNet <libo.zhu@intel.com>

5 files changed, 549 insertions, 0 deletions

diff --git a/artifactbroker/plugins/forwarding-plugins/src/main/java/org/onap/policy/distribution/forwarding/xacml/pdp/XacmlPdpArtifactForwarder.java b/artifactbroker/plugins/forwarding-plugins/src/main/java/org/onap/policy/distribution/forwarding/xacml/pdp/XacmlPdpArtifactForwarder.java
new file mode 100644
index 0000000..906827c
--- /dev/null
+++ b/artifactbroker/plugins/forwarding-plugins/src/main/java/org/onap/policy/distribution/forwarding/xacml/pdp/XacmlPdpArtifactForwarder.java
@@ -0,0 +1,207 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2018 Ericsson. 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.distribution.forwarding.xacml.pdp;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.reflect.TypeToken;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+
+
+import org.apache.http.HttpEntity;
+import org.apache.http.NameValuePair;
+import org.apache.http.client.ClientProtocolException;
+import org.apache.http.client.entity.UrlEncodedFormEntity;
+import org.apache.http.client.methods.CloseableHttpResponse;
+import org.apache.http.client.methods.HttpGet;
+import org.apache.http.client.methods.HttpPost;
+import org.apache.http.entity.FileEntity;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.http.impl.client.HttpClients;
+import org.apache.http.message.BasicNameValuePair;
+import org.apache.http.entity.StringEntity;
+import org.apache.http.util.EntityUtils;
+
+import org.onap.policy.common.logging.flexlogger.FlexLogger;
+import org.onap.policy.common.logging.flexlogger.Logger;
+import org.onap.policy.common.parameters.ParameterService;
+import org.onap.policy.distribution.forwarding.ArtifactForwarder;
+import org.onap.policy.distribution.forwarding.xacml.pdp.adapters.XacmlPdpOptimizationPolicyAdapter;
+import org.onap.policy.distribution.model.PolicyInput;
+import org.onap.policy.distribution.model.CloudArtifact;
+import org.onap.policy.distribution.model.VfModuleModel;
+import org.onap.sdc.api.notification.IArtifactInfo;
+import org.springframework.http.HttpStatus;
+
+
+/**
+ * Forwards policies to the XACML PDP.
+ */
+public class XacmlPdpArtifactForwarder implements ArtifactForwarder {
+
+    private static final Logger LOGGER = FlexLogger.getLogger(XacmlPdpArtifactForwarder.class);
+    private static final String BASE_PATH = "http://localhost:8081/v1/rb/definition";
+    private static final String CLOUD_TECHNOLOGY_SPECIFIC_ARTIFACT = "CLOUD_TECHNOLOGY_SPECIFIC_ARTIFACT";
+    private Map<String, IArtifactInfo> artifactMap;
+
+    private XacmlPdpArtifactForwarderParameterGroup configurationParameters = null;
+    
+
+
+    @Override
+    public void forward(PolicyInput  policyInput) {
+        if (policyInput instanceof CloudArtifact) {
+            System.out.println("get a CloudArtifact !");  
+            CloudArtifact cloudArtifact = (CloudArtifact) policyInput;
+            artifactMap = cloudArtifact.getArtifactTypeMap();
+            System.out.println("the artifactMap = " + artifactMap);  
+            ArrayList<VfModuleModel> vfModuleModels = cloudArtifact.getVfModulePayload();
+            System.out.println("the size of vfModule = " + vfModuleModels.size());  
+                   
+            for (VfModuleModel vfModule : vfModuleModels) {
+                forwardAndUpload(vfModule);
+            }
+        } else {
+            System.out.println("NOT a CloudArtifact type !");
+            return;
+        }
+    }
+
+    private void forwardAndUpload(VfModuleModel vfModule) {
+        
+        System.out.println("before create type !");
+        boolean definitionCreated = createDefinition(vfModule);
+        System.out.println(" after create type !");
+        if (definitionCreated) {
+            uploadArtifact(vfModule);
+        }
+    }
+
+    private boolean createDefinition(VfModuleModel vfModule) {
+        try {
+            HttpPost httpPost = new HttpPost(BASE_PATH);
+            httpPost.addHeader("Accept", "application/json");
+            httpPost.addHeader("Content-Type", "application/json");
+
+            Gson gson = new GsonBuilder().enableComplexMapKeySerialization()
+                .create();
+
+            Map<String, Object> map = new LinkedHashMap<String, Object>();
+            map.put("rb-name", vfModule.getVfModuleModelName());
+            map.put("rb-version", vfModule.getVfModuleModelVersion());
+            map.put("descritpion",vfModule.getVfModuleModelDescription());
+            Map<String, String> labelMap = new LinkedHashMap<String, String>();
+            labelMap.put("vnf_customization_uuid",vfModule.getVfModuleModelCustomizationUUID());
+            map.put("labels", labelMap);
+            String json = gson.toJson(map);
+
+            StringEntity entity = new StringEntity(json);
+            httpPost.setEntity(entity);
+            return invokeHttpPost("definition", httpPost);
+        } catch (Exception e) {
+            System.out.println("create definition error");
+            return false;
+        }
+
+    }
+
+    private boolean uploadArtifact(VfModuleModel vfModule) {
+        String url = BASE_PATH + "/" + vfModule.getVfModuleModelName() + "/" 
+            + vfModule.getVfModuleModelVersion() + "/content"; 
+        HttpPost httpPost = new HttpPost(url);
+        httpPost.addHeader("content-type", "application/x-www-form-urlencoded;charset=utf-8");
+
+        List<String> artifacts = vfModule.getArtifacts();
+        System.out.println("artifacts = " + artifacts);
+
+        String cloudUuid = null;
+        IArtifactInfo cloudArtifact = null;
+        boolean found = false;
+
+        for (String artifact: artifacts) {
+            if ( artifactMap.get(artifact) != null && 
+                artifactMap.get(artifact).getArtifactType().equals("CLOUD_TECHNOLOGY_SPECIFIC_ARTIFACT")) {
+                cloudArtifact = artifactMap.get(artifact);
+                cloudUuid = cloudArtifact.getArtifactUUID();
+                found = true;
+                break;
+            }
+        }
+        
+        if ( found == false ) {
+            System.out.println(" meets error , no CLOUD_TECHNOLOGY_SPECIFIC_ARTIFACT type found ");
+            return false;
+        }
+        String cloudArtifactPath = "/data/" + vfModule.getVfModuleModelCustomizationUUID() 
+            + "/" + cloudArtifact.getArtifactName();
+        File file = new File(cloudArtifactPath);
+        FileEntity entity = new FileEntity(file);
+        httpPost.setEntity(entity);
+        
+        return invokeHttpPost("uploading", httpPost);
+    }
+
+
+    @Override
+    public void configure(String parameterGroupName) {
+        configurationParameters = ParameterService.get(parameterGroupName);
+    }
+
+    protected static boolean invokeHttpPost(String action, HttpPost httpPost)  {
+        System.out.println("httpPost begin!");
+        boolean ret = false;
+
+        String errorMsg;
+        label1: {
+            try ( CloseableHttpClient httpClient = HttpClients.createDefault() ) {
+                System.out.println("result1") ;
+                CloseableHttpResponse closeableHttpResponse = httpClient.execute(httpPost);
+                System.out.println("result2") ;
+                String result = EntityUtils.toString(closeableHttpResponse.getEntity());
+                System.out.println("result = {}" + result);
+                System.out.println("status  = {}"+ closeableHttpResponse.getStatusLine().getStatusCode());
+                if ( closeableHttpResponse.getStatusLine().getStatusCode() != 200 ) {
+                    System.out.println("exception: ret= " + closeableHttpResponse.getStatusLine().getStatusCode());
+                } else {
+                    ret = true;
+                }
+
+                closeableHttpResponse.close();
+                break label1;
+            } catch (IOException var) {
+                errorMsg = action + ":httpPostWithJSON connect faild";
+                System.out.println("exception: POST_CONNECT_FAILD : {}" + errorMsg);
+            }
+        }
+
+        System.out.println("httpPost end!");
+        return ret;
+    }
+
+}
diff --git a/artifactbroker/plugins/forwarding-plugins/src/main/java/org/onap/policy/distribution/forwarding/xacml/pdp/XacmlPdpArtifactForwarderParameterGroup.java b/artifactbroker/plugins/forwarding-plugins/src/main/java/org/onap/policy/distribution/forwarding/xacml/pdp/XacmlPdpArtifactForwarderParameterGroup.java
new file mode 100644
index 0000000..d04bb3c
--- /dev/null
+++ b/artifactbroker/plugins/forwarding-plugins/src/main/java/org/onap/policy/distribution/forwarding/xacml/pdp/XacmlPdpArtifactForwarderParameterGroup.java
@@ -0,0 +1,181 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2018 Ericsson. 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.distribution.forwarding.xacml.pdp;
+
+import org.onap.policy.common.parameters.GroupValidationResult;
+import org.onap.policy.common.parameters.ValidationStatus;
+import org.onap.policy.common.utils.validation.ParameterValidationUtils;
+import org.onap.policy.distribution.main.parameters.ArtifactForwarderConfigurationParameterGroup;
+
+/**
+ * Holds the parameters for the{@link XacmlPdpArtifactForwarder}.
+ */
+public class XacmlPdpArtifactForwarderParameterGroup extends ArtifactForwarderConfigurationParameterGroup {
+    public static final String POLICY_FORWARDER_PLUGIN_CLASS = XacmlPdpArtifactForwarder.class.getCanonicalName();
+
+    private boolean useHttps;
+    private String hostname;
+    private int port;
+    private String userName;
+    private String password;
+    private String clientAuth;
+    private boolean isManaged;
+    private String pdpGroup;
+
+    /**
+     * Construct an instance.
+     *
+     * @param builder the builder create the instance from
+     */
+    private XacmlPdpArtifactForwarderParameterGroup(final XacmlPdpArtifactForwarderParameterGroupBuilder builder) {
+        this.useHttps = builder.useHttps;
+        this.hostname = builder.hostname;
+        this.port = builder.port;
+        this.userName = builder.userName;
+        this.password = builder.password;
+        this.clientAuth = builder.clientAuth;
+        this.isManaged = builder.isManaged;
+        this.pdpGroup = builder.pdpGroup;
+    }
+
+    public boolean isUseHttps() {
+        return useHttps;
+    }
+
+    public String getHostname() {
+        return hostname;
+    }
+
+    public int getPort() {
+        return port;
+    }
+
+    public String getUserName() {
+        return userName;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public String getClientAuth() {
+        return clientAuth;
+    }
+
+    public boolean isManaged() {
+        return isManaged;
+    }
+
+    public String getPdpGroup() {
+        return pdpGroup;
+    }
+
+    /**
+     * Builder for XacmlPdpArtifactForwarderParameterGroup.
+     */
+    public static class XacmlPdpArtifactForwarderParameterGroupBuilder {
+        private boolean useHttps = false;
+        private String hostname;
+        private int port;
+        private String userName;
+        private String password;
+        private String clientAuth;
+        private boolean isManaged = true;
+        private String pdpGroup;
+
+        public XacmlPdpArtifactForwarderParameterGroupBuilder setUseHttps(final boolean useHttps) {
+            this.useHttps = useHttps;
+            return this;
+        }
+
+        public XacmlPdpArtifactForwarderParameterGroupBuilder setHostname(final String hostname) {
+            this.hostname = hostname;
+            return this;
+        }
+
+        public XacmlPdpArtifactForwarderParameterGroupBuilder setPort(final int port) {
+            this.port = port;
+            return this;
+        }
+
+        public XacmlPdpArtifactForwarderParameterGroupBuilder setUserName(final String userName) {
+            this.userName = userName;
+            return this;
+        }
+
+        public XacmlPdpArtifactForwarderParameterGroupBuilder setPassword(final String password) {
+            this.password = password;
+            return this;
+        }
+
+        public XacmlPdpArtifactForwarderParameterGroupBuilder setClientAuth(final String clientAuth) {
+            this.clientAuth = clientAuth;
+            return this;
+        }
+
+        public XacmlPdpArtifactForwarderParameterGroupBuilder setIsManaged(final boolean isManaged) {
+            this.isManaged = isManaged;
+            return this;
+        }
+
+        public XacmlPdpArtifactForwarderParameterGroupBuilder setPdpGroup(final String pdpGroup) {
+            this.pdpGroup = pdpGroup;
+            return this;
+        }
+
+        /**
+         * Creates a new XacmlPapServletArtifactForwarderParameterGroup instance.
+         */
+        public XacmlPdpArtifactForwarderParameterGroup build() {
+            return new XacmlPdpArtifactForwarderParameterGroup(this);
+        }
+    }
+
+    @Override
+    public GroupValidationResult validate() {
+        final GroupValidationResult validationResult = new GroupValidationResult(this);
+        if (!ParameterValidationUtils.validateStringParameter(hostname)) {
+            validationResult.setResult("hostname", ValidationStatus.INVALID,
+                    "must be a non-blank string containing hostname/ipaddress");
+        }
+        if (!ParameterValidationUtils.validateIntParameter(port)) {
+            validationResult.setResult("port", ValidationStatus.INVALID, "must be a positive integer containing port");
+        }
+        if (!ParameterValidationUtils.validateStringParameter(userName)) {
+            validationResult.setResult("userName", ValidationStatus.INVALID,
+                    "must be a non-blank string containing userName");
+        }
+        if (!ParameterValidationUtils.validateStringParameter(password)) {
+            validationResult.setResult("password", ValidationStatus.INVALID,
+                    "must be a non-blank string containing password");
+        }
+        if (!ParameterValidationUtils.validateStringParameter(clientAuth)) {
+            validationResult.setResult("clientAuth", ValidationStatus.INVALID,
+                    "must be a non-blank string containing clientAuth");
+        }
+        if (!ParameterValidationUtils.validateStringParameter(pdpGroup)) {
+            validationResult.setResult("pdpGroup", ValidationStatus.INVALID,
+                    "must be a non-blank string containing pdpGroup");
+        }
+        return validationResult;
+    }
+
+}
diff --git a/artifactbroker/plugins/forwarding-plugins/src/main/java/org/onap/policy/distribution/forwarding/xacml/pdp/XacmlPdpPolicyAdapter.java b/artifactbroker/plugins/forwarding-plugins/src/main/java/org/onap/policy/distribution/forwarding/xacml/pdp/XacmlPdpPolicyAdapter.java
new file mode 100644
index 0000000..c50eac1
--- /dev/null
+++ b/artifactbroker/plugins/forwarding-plugins/src/main/java/org/onap/policy/distribution/forwarding/xacml/pdp/XacmlPdpPolicyAdapter.java
@@ -0,0 +1,53 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2018 Ericsson. 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.
+ * 
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.distribution.forwarding.xacml.pdp;
+
+import org.onap.policy.api.PolicyParameters;
+import org.onap.policy.api.PushPolicyParameters;
+import org.onap.policy.distribution.model.Policy;
+
+/**
+ * Adapts {@link Policy} objects to objects compatible with the XACML PDP API.
+ */
+public interface XacmlPdpPolicyAdapter<T extends Policy> {
+
+    /**
+     * Get the policy.
+     * 
+     * @return the policy
+     */
+    T getPolicy();
+
+    /**
+     * Get as a {@link PolicyParameters} object.
+     * 
+     * @returna {@link PolicyParameters} object
+     */
+    PolicyParameters getAsPolicyParameters();
+
+    /**
+     * Get as a {@link PushPolicyParameters} object.
+     * 
+     * @returna {@link PushPolicyParameters} object
+     */
+    PushPolicyParameters getAsPushPolicyParameters(final String pdpGroups);
+
+}
diff --git a/artifactbroker/plugins/forwarding-plugins/src/main/java/org/onap/policy/distribution/forwarding/xacml/pdp/adapters/AbstractXacmlPdpPolicyAdapter.java b/artifactbroker/plugins/forwarding-plugins/src/main/java/org/onap/policy/distribution/forwarding/xacml/pdp/adapters/AbstractXacmlPdpPolicyAdapter.java
new file mode 100644
index 0000000..c136516
--- /dev/null
+++ b/artifactbroker/plugins/forwarding-plugins/src/main/java/org/onap/policy/distribution/forwarding/xacml/pdp/adapters/AbstractXacmlPdpPolicyAdapter.java
@@ -0,0 +1,54 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2018 Ericsson. 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.
+ * 
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.distribution.forwarding.xacml.pdp.adapters;
+
+import org.onap.policy.api.PushPolicyParameters;
+import org.onap.policy.distribution.forwarding.xacml.pdp.XacmlPdpPolicyAdapter;
+import org.onap.policy.distribution.model.Policy;
+
+/**
+ * Base class for {@link XacmlPdpPolicyAdapter} implementations.
+ * 
+ * @param <T> the type of policy the adapter handles
+ */
+public abstract class AbstractXacmlPdpPolicyAdapter<T extends Policy> implements XacmlPdpPolicyAdapter<T> {
+
+    private T policy;
+
+    protected AbstractXacmlPdpPolicyAdapter(T policy) {
+        this.policy = policy;
+    }
+
+    @Override
+    public T getPolicy() {
+        return policy;
+    }
+
+    @Override
+    public PushPolicyParameters getAsPushPolicyParameters(String pdpGroups) {
+        PushPolicyParameters pushPolicyParameters = new PushPolicyParameters();
+        pushPolicyParameters.setPolicyName(policy.getPolicyName());
+        pushPolicyParameters.setPolicyType(policy.getPolicyType());
+        pushPolicyParameters.setPdpGroup(pdpGroups);
+        return pushPolicyParameters;
+    }
+
+}
diff --git a/artifactbroker/plugins/forwarding-plugins/src/main/java/org/onap/policy/distribution/forwarding/xacml/pdp/adapters/XacmlPdpOptimizationPolicyAdapter.java b/artifactbroker/plugins/forwarding-plugins/src/main/java/org/onap/policy/distribution/forwarding/xacml/pdp/adapters/XacmlPdpOptimizationPolicyAdapter.java
new file mode 100644
index 0000000..1ec654f
--- /dev/null
+++ b/artifactbroker/plugins/forwarding-plugins/src/main/java/org/onap/policy/distribution/forwarding/xacml/pdp/adapters/XacmlPdpOptimizationPolicyAdapter.java
@@ -0,0 +1,54 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2018 Ericsson. 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.
+ * 
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.distribution.forwarding.xacml.pdp.adapters;
+
+import org.onap.policy.api.PolicyConfigType;
+import org.onap.policy.api.PolicyParameters;
+import org.onap.policy.distribution.model.OptimizationPolicy;
+
+/**
+ * Adapts {@link OptimizationPolicy} objects to objects compatible with the XACML PDP API.
+ */
+public class XacmlPdpOptimizationPolicyAdapter extends AbstractXacmlPdpPolicyAdapter<OptimizationPolicy> {
+
+    /**
+     * Create an instance to adapt the given {@link OptimizationPolicy}.
+     * 
+     * @param optimizationPolicy the {@link OptimizationPolicy} to be adapted
+     */
+    public XacmlPdpOptimizationPolicyAdapter(final OptimizationPolicy optimizationPolicy) {
+        super(optimizationPolicy);
+    }
+
+    @Override
+    public PolicyParameters getAsPolicyParameters() {
+        PolicyParameters policyParameters = new PolicyParameters();
+        policyParameters.setPolicyName(getPolicy().getPolicyName());
+        policyParameters.setPolicyDescription(getPolicy().getPolicyDescription());
+        policyParameters.setPolicyConfigType(PolicyConfigType.valueOf(getPolicy().getPolicyConfigType()));
+        policyParameters.setOnapName(getPolicy().getOnapName());
+        policyParameters.setRiskLevel(getPolicy().getRiskLevel());
+        policyParameters.setConfigBody(getPolicy().getConfigBody());
+        policyParameters.setRiskType(getPolicy().getRiskType());
+        return policyParameters;
+    }
+
+}