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authorwaqas.ikram <waqas.ikram@est.tech>2019-03-25 19:41:23 +0000
committerwaqas.ikram <waqas.ikram@est.tech>2019-03-25 19:41:23 +0000
commit448899ee55a6cf1c55b5510adceba8b3bab98297 (patch)
tree33247077dcf4d56e37ed1d5a28081f0c70f9de18 /bpmn/so-bpmn-tasks/src/main/java/org
parente2a3995dd8dba9b9a18635ce37e4805dadcdb0fd (diff)
Added input parameter loading handling from SDNC
Change-Id: I9076d793468db659358c7ef0e7cc859886d7fe17 Issue-ID: SO-1624 Signed-off-by: waqas.ikram <waqas.ikram@est.tech>
Diffstat (limited to 'bpmn/so-bpmn-tasks/src/main/java/org')
-rw-r--r--bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/Constants.java5
-rw-r--r--bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/InputParameterRetrieverTask.java74
-rw-r--r--bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/VnfmAdapterCreateVnfTask.java12
-rw-r--r--bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/utils/InputParameter.java81
-rw-r--r--bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/utils/InputParametersProvider.java31
-rw-r--r--bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/utils/InputParametersProviderImpl.java161
-rw-r--r--bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/utils/NullInputParameter.java37
-rw-r--r--bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/utils/VnfParameter.java91
8 files changed, 492 insertions, 0 deletions
diff --git a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/Constants.java b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/Constants.java
index d03173d0ac..667ac133af 100644
--- a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/Constants.java
+++ b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/Constants.java
@@ -27,6 +27,8 @@ public class Constants {
public static final String CREATE_VNF_REQUEST_PARAM_NAME = "createVnfRequest";
public static final String CREATE_VNF_RESPONSE_PARAM_NAME = "createVnfResponse";
+
+ public static final String INPUT_PARAMETER = "inputParameter";
public static final String DOT = ".";
public static final String UNDERSCORE = "_";
@@ -34,6 +36,9 @@ public class Constants {
public static final String VNFM_ADAPTER_DEFAULT_URL = "http://so-vnfm-adapter.onap:9092/so/vnfm-adapter/v1/";
public static final String VNFM_ADAPTER_DEFAULT_AUTH = "Basic dm5mbTpwYXNzd29yZDEk";
+
+ public static final String FORWARD_SLASH = "/";
+ public static final String PRELOAD_VNFS_URL = "/restconf/config/VNF-API:preload-vnfs/vnf-preload-list/";
private Constants() {}
diff --git a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/InputParameterRetrieverTask.java b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/InputParameterRetrieverTask.java
new file mode 100644
index 0000000000..ebb9d521c3
--- /dev/null
+++ b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/InputParameterRetrieverTask.java
@@ -0,0 +1,74 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2019 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.so.bpmn.infrastructure.adapter.vnfm.tasks;
+
+import static org.onap.so.bpmn.infrastructure.adapter.vnfm.tasks.Constants.INPUT_PARAMETER;
+import static org.onap.so.bpmn.servicedecomposition.entities.ResourceKey.GENERIC_VNF_ID;
+
+import org.onap.so.bpmn.common.BuildingBlockExecution;
+import org.onap.so.bpmn.infrastructure.adapter.vnfm.tasks.utils.InputParameter;
+import org.onap.so.bpmn.infrastructure.adapter.vnfm.tasks.utils.InputParametersProvider;
+import org.onap.so.bpmn.infrastructure.adapter.vnfm.tasks.utils.NullInputParameter;
+import org.onap.so.bpmn.servicedecomposition.bbobjects.GenericVnf;
+import org.onap.so.bpmn.servicedecomposition.tasks.ExtractPojosForBB;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+/**
+ * This class retrieve input parameters
+ *
+ * @author waqas.ikram@est.tech
+ */
+@Component
+public class InputParameterRetrieverTask {
+
+ private static final Logger LOGGER = LoggerFactory.getLogger(InputParameterRetrieverTask.class);
+
+ private final InputParametersProvider inputParametersProvider;
+
+ private final ExtractPojosForBB extractPojosForBB;
+
+ @Autowired
+ public InputParameterRetrieverTask(final InputParametersProvider inputParametersProvider,
+ final ExtractPojosForBB extractPojosForBB) {
+ this.inputParametersProvider = inputParametersProvider;
+ this.extractPojosForBB = extractPojosForBB;
+ }
+
+ public void getInputParameters(final BuildingBlockExecution execution) {
+ try {
+ LOGGER.debug("Executing getInputParameters ...");
+
+ final GenericVnf vnf = extractPojosForBB.extractByKey(execution, GENERIC_VNF_ID);
+ final InputParameter inputParameter = inputParametersProvider.getInputParameter(vnf);
+
+ LOGGER.debug("inputParameter: {}", inputParameter);
+ execution.setVariable(INPUT_PARAMETER, inputParameter);
+
+ LOGGER.debug("Finished executing getInputParameters ...");
+ } catch (final Exception exception) {
+ LOGGER.error("Unable to invoke create and instantiation request", exception);
+ execution.setVariable(INPUT_PARAMETER, NullInputParameter.NULL_INSTANCE);
+ }
+ }
+
+}
diff --git a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/VnfmAdapterCreateVnfTask.java b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/VnfmAdapterCreateVnfTask.java
index 23ddb6f3f7..4e15474e46 100644
--- a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/VnfmAdapterCreateVnfTask.java
+++ b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/VnfmAdapterCreateVnfTask.java
@@ -23,11 +23,14 @@ package org.onap.so.bpmn.infrastructure.adapter.vnfm.tasks;
import static org.onap.so.bpmn.infrastructure.adapter.vnfm.tasks.Constants.CREATE_VNF_REQUEST_PARAM_NAME;
import static org.onap.so.bpmn.infrastructure.adapter.vnfm.tasks.Constants.CREATE_VNF_RESPONSE_PARAM_NAME;
import static org.onap.so.bpmn.infrastructure.adapter.vnfm.tasks.Constants.DOT;
+import static org.onap.so.bpmn.infrastructure.adapter.vnfm.tasks.Constants.INPUT_PARAMETER;
import static org.onap.so.bpmn.infrastructure.adapter.vnfm.tasks.Constants.SPACE;
import static org.onap.so.bpmn.infrastructure.adapter.vnfm.tasks.Constants.UNDERSCORE;
import static org.onap.so.bpmn.servicedecomposition.entities.ResourceKey.GENERIC_VNF_ID;
import org.onap.so.bpmn.common.BuildingBlockExecution;
+import org.onap.so.bpmn.infrastructure.adapter.vnfm.tasks.utils.InputParameter;
+import org.onap.so.bpmn.infrastructure.adapter.vnfm.tasks.utils.NullInputParameter;
import org.onap.so.bpmn.servicedecomposition.bbobjects.CloudRegion;
import org.onap.so.bpmn.servicedecomposition.bbobjects.GenericVnf;
import org.onap.so.bpmn.servicedecomposition.entities.GeneralBuildingBlock;
@@ -83,10 +86,14 @@ public class VnfmAdapterCreateVnfTask {
final GenericVnf vnf = extractPojosForBB.extractByKey(execution, GENERIC_VNF_ID);
final ModelInfoGenericVnf modelInfoGenericVnf = vnf.getModelInfoGenericVnf();
+ final InputParameter inputParameter = getInputParameter(execution);
+
final CreateVnfRequest createVnfRequest = new CreateVnfRequest();
createVnfRequest.setName(getName(vnf.getVnfName(), modelInfoGenericVnf.getModelInstanceName()));
createVnfRequest.setTenant(getTenant(cloudRegion));
+ createVnfRequest.setAdditionalParams(inputParameter.getAdditionalParams());
+ createVnfRequest.setExternalVirtualLinks(inputParameter.getExtVirtualLinks());
LOGGER.info("CreateVnfRequest : {}", createVnfRequest);
@@ -99,6 +106,11 @@ public class VnfmAdapterCreateVnfTask {
}
}
+ private InputParameter getInputParameter(final BuildingBlockExecution execution) {
+ final InputParameter inputParameter = execution.getVariable(INPUT_PARAMETER);
+ return inputParameter != null ? inputParameter : NullInputParameter.NULL_INSTANCE;
+ }
+
/**
* Invoke VNFM adapter to create and instantiate VNF
*
diff --git a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/utils/InputParameter.java b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/utils/InputParameter.java
new file mode 100644
index 0000000000..5ade3240a0
--- /dev/null
+++ b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/utils/InputParameter.java
@@ -0,0 +1,81 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2019 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.so.bpmn.infrastructure.adapter.vnfm.tasks.utils;
+
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.onap.vnfmadapter.v1.model.ExternalVirtualLink;
+
+/**
+ * Wrapper class for instance parameters which are based on SOL003
+ *
+ * @author waqas.ikram@est.tech
+ */
+public class InputParameter implements Serializable {
+
+ private static final long serialVersionUID = 42034634585595304L;
+
+ private Map<String, String> additionalParams = new HashMap<>();
+
+ private List<ExternalVirtualLink> extVirtualLinks = new ArrayList<>();
+
+ public InputParameter(final Map<String, String> additionalParams, final List<ExternalVirtualLink> extVirtualLinks) {
+ this.additionalParams = additionalParams;
+ this.extVirtualLinks = extVirtualLinks;
+ }
+
+ /**
+ * @return the additionalParams
+ */
+ public Map<String, String> getAdditionalParams() {
+ return additionalParams;
+ }
+
+ /**
+ * @return the extVirtualLinks
+ */
+ public List<ExternalVirtualLink> getExtVirtualLinks() {
+ return extVirtualLinks;
+ }
+
+ /**
+ * @param additionalParams the additionalParams to set
+ */
+ public void setAdditionalParams(final Map<String, String> additionalParams) {
+ this.additionalParams = additionalParams;
+ }
+
+ /**
+ * @param extVirtualLinks the extVirtualLinks to set
+ */
+ public void setExtVirtualLinks(final List<ExternalVirtualLink> extVirtualLinks) {
+ this.extVirtualLinks = extVirtualLinks;
+ }
+
+ @Override
+ public String toString() {
+ return "InputParameter [additionalParams=" + additionalParams + ", extVirtualLinks=" + extVirtualLinks + "]";
+ }
+
+}
diff --git a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/utils/InputParametersProvider.java b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/utils/InputParametersProvider.java
new file mode 100644
index 0000000000..55203fb7cc
--- /dev/null
+++ b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/utils/InputParametersProvider.java
@@ -0,0 +1,31 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2019 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.so.bpmn.infrastructure.adapter.vnfm.tasks.utils;
+
+import org.onap.so.bpmn.servicedecomposition.bbobjects.GenericVnf;
+
+/**
+ * @author waqas.ikram@est.tech
+ */
+public interface InputParametersProvider {
+
+ InputParameter getInputParameter(final GenericVnf genericVnf);
+
+}
diff --git a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/utils/InputParametersProviderImpl.java b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/utils/InputParametersProviderImpl.java
new file mode 100644
index 0000000000..6027e78d8b
--- /dev/null
+++ b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/utils/InputParametersProviderImpl.java
@@ -0,0 +1,161 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2019 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.so.bpmn.infrastructure.adapter.vnfm.tasks.utils;
+
+import static org.onap.so.bpmn.infrastructure.adapter.vnfm.tasks.Constants.FORWARD_SLASH;
+import static org.onap.so.bpmn.infrastructure.adapter.vnfm.tasks.Constants.PRELOAD_VNFS_URL;
+
+import java.io.IOException;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+import org.onap.so.bpmn.servicedecomposition.bbobjects.GenericVnf;
+import org.onap.so.bpmn.servicedecomposition.modelinfo.ModelInfoGenericVnf;
+import org.onap.so.client.sdnc.SDNCClient;
+import org.onap.vnfmadapter.v1.model.ExternalVirtualLink;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import com.fasterxml.jackson.core.JsonParseException;
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.jayway.jsonpath.JsonPath;
+
+import net.minidev.json.JSONArray;
+
+/**
+ * This class retrieve pre-load data from SDNC using <br/>
+ * <b>GET</b> /config/VNF-API:preload-vnfs/vnf-preload-list/{vnf-name}/{vnf-type}
+ *
+ * @author waqas.ikram@est.tech
+ */
+@Service
+public class InputParametersProviderImpl implements InputParametersProvider {
+
+ private static final Logger LOGGER = LoggerFactory.getLogger(InputParametersProviderImpl.class);
+
+ private static final String EXT_VIRTUAL_LINKS = "extVirtualLinks";
+ private static final String ADDITIONAL_PARAMS = "additionalParams";
+ private static final String VNF_PARAMETERS_PATH = "$..vnf-parameters";
+
+ private final SDNCClient sdncClient;
+
+ @Autowired
+ public InputParametersProviderImpl(final SDNCClient sdncClient) {
+ this.sdncClient = sdncClient;
+ }
+
+ @Override
+ public InputParameter getInputParameter(final GenericVnf genericVnf) {
+ final String vnfName = genericVnf.getVnfName();
+ final String vnfType = getVnfType(genericVnf);
+ final String url = getPreloadVnfsUrl(vnfName, vnfType);
+
+ try {
+ LOGGER.debug("Will query sdnc for input parameters using url: {}", url);
+ final String jsonResponse = sdncClient.get(url);
+
+ final JSONArray vnfParametersArray = JsonPath.read(jsonResponse, VNF_PARAMETERS_PATH);
+ if (vnfParametersArray != null) {
+ for (int index = 0; index < vnfParametersArray.size(); index++) {
+ final Object vnfParametersObject = vnfParametersArray.get(index);
+ if (vnfParametersObject instanceof JSONArray) {
+ final JSONArray vnfParameters = (JSONArray) vnfParametersObject;
+ final Map<String, String> vnfParametersMap = getVnfParameterMap(vnfParameters);
+ return new InputParameter(getAdditionalParameters(vnfParametersMap),
+ getExtVirtualLinks(vnfParametersMap));
+ }
+ }
+ }
+ } catch (final Exception exception) {
+ LOGGER.error("Unable to retrieve/parse input parameters using URL: {} ", url, exception);
+ }
+ LOGGER.warn("No input parameters found ...");
+ return NullInputParameter.NULL_INSTANCE;
+
+ }
+
+ private List<ExternalVirtualLink> getExtVirtualLinks(final Map<String, String> vnfParametersMap)
+ throws JsonParseException, IOException {
+ try {
+ final String extVirtualLinksString = vnfParametersMap.get(EXT_VIRTUAL_LINKS);
+
+ if (extVirtualLinksString != null && !extVirtualLinksString.isEmpty()) {
+ final ObjectMapper mapper = new ObjectMapper();
+ final TypeReference<List<ExternalVirtualLink>> extVirtualLinksStringTypeRef =
+ new TypeReference<List<ExternalVirtualLink>>() {};
+
+ return mapper.readValue(extVirtualLinksString, extVirtualLinksStringTypeRef);
+ }
+ } catch (final Exception exception) {
+ LOGGER.error("Unable to parse {} ", EXT_VIRTUAL_LINKS, exception);
+ }
+ return Collections.emptyList();
+ }
+
+ private Map<String, String> getAdditionalParameters(final Map<String, String> vnfParametersMap)
+ throws JsonParseException, IOException {
+ try {
+ final String additionalParamsString = vnfParametersMap.get(ADDITIONAL_PARAMS);
+ if (additionalParamsString != null && !additionalParamsString.isEmpty()) {
+ final ObjectMapper mapper = new ObjectMapper();
+ final TypeReference<Map<String, String>> typeRef = new TypeReference<Map<String, String>>() {};
+ return mapper.readValue(additionalParamsString, typeRef);
+ }
+ } catch (final Exception exception) {
+ LOGGER.error("Unable to parse {} ", ADDITIONAL_PARAMS, exception);
+ }
+ return Collections.emptyMap();
+ }
+
+ private Map<String, String> getVnfParameterMap(final JSONArray array) {
+ try {
+ if (array != null) {
+ final ObjectMapper mapper = new ObjectMapper();
+ final VnfParameter[] readValue = mapper.readValue(array.toJSONString(), VnfParameter[].class);
+ LOGGER.debug("Vnf parameters: {}", Arrays.asList(readValue));
+ return Arrays.asList(readValue).stream()
+ .filter(vnfParam -> vnfParam.getName() != null && vnfParam.getValue() != null)
+ .collect(Collectors.toMap(VnfParameter::getName, VnfParameter::getValue));
+ }
+ } catch (final IOException exception) {
+ LOGGER.error("Unable to parse vnf parameters : {}", array, exception);
+ }
+ return Collections.emptyMap();
+ }
+
+ private String getPreloadVnfsUrl(final String vnfName, final String vnfType) {
+ return PRELOAD_VNFS_URL + vnfName + FORWARD_SLASH + vnfType;
+ }
+
+ private String getVnfType(final GenericVnf genericVnf) {
+ final ModelInfoGenericVnf modelInfoGenericVnf = genericVnf.getModelInfoGenericVnf();
+ if (modelInfoGenericVnf != null && modelInfoGenericVnf.getModelName() != null) {
+ return modelInfoGenericVnf.getModelName();
+ }
+ return genericVnf.getVnfType();
+ }
+
+}
diff --git a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/utils/NullInputParameter.java b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/utils/NullInputParameter.java
new file mode 100644
index 0000000000..fb877ac55d
--- /dev/null
+++ b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/utils/NullInputParameter.java
@@ -0,0 +1,37 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2019 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.so.bpmn.infrastructure.adapter.vnfm.tasks.utils;
+
+import java.util.Collections;
+
+/**
+ * @author waqas.ikram@est.tech
+ */
+public class NullInputParameter extends InputParameter {
+
+ private static final long serialVersionUID = -7261286746726871696L;
+
+ public static final NullInputParameter NULL_INSTANCE = new NullInputParameter();
+
+ private NullInputParameter() {
+ super(Collections.emptyMap(), Collections.emptyList());
+ }
+
+}
diff --git a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/utils/VnfParameter.java b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/utils/VnfParameter.java
new file mode 100644
index 0000000000..11e93e733d
--- /dev/null
+++ b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/utils/VnfParameter.java
@@ -0,0 +1,91 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2019 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.so.bpmn.infrastructure.adapter.vnfm.tasks.utils;
+
+import java.util.Objects;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * This is used to deserialize vnf-parameters from vnf-preload-list/{vnf-name}/{vnf-type} response
+ *
+ * @author waqas.ikram@est.tech
+ */
+public class VnfParameter {
+
+ @JsonProperty("vnf-parameter-name")
+ private String name;
+
+ @JsonProperty("vnf-parameter-value")
+ private String value;
+
+ /**
+ * @return the name
+ */
+ public String getName() {
+ return name;
+ }
+
+ /**
+ * @param name the name to set
+ */
+ public void setName(final String name) {
+ this.name = name;
+ }
+
+ /**
+ * @return the value
+ */
+ public String getValue() {
+ return value;
+ }
+
+ /**
+ * @param value the value to set
+ */
+ public void setValue(final String value) {
+ this.value = value;
+ }
+
+ @Override
+ public int hashCode() {
+ final int prime = 31;
+ int result = 1;
+ result = prime * result + ((name == null) ? 0 : name.hashCode());
+ result = prime * result + ((value == null) ? 0 : value.hashCode());
+ return Objects.hash(name, value);
+ }
+
+ @Override
+ public boolean equals(final Object obj) {
+ if (obj instanceof VnfParameter) {
+ VnfParameter other = (VnfParameter) obj;
+ return Objects.equals(name, other.name) && Objects.equals(value, other.value);
+ }
+
+ return false;
+ }
+
+ @Override
+ public String toString() {
+ return "VnfParameter [name=" + name + ", value=" + value + "]";
+ }
+
+}