Merge "Check for existing VNF in VNFM"

12 files changed, 698 insertions, 5 deletions

diff --git a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/VnfmAdapterApplication.java b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/VnfmAdapterApplication.java
index 024e936cfb..d7021e7eb8 100755
--- a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/VnfmAdapterApplication.java
+++ b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/VnfmAdapterApplication.java
@@ -29,8 +29,9 @@ import org.springframework.boot.autoconfigure.SpringBootApplication;
 /**
  * The spring boot application for the VNFM (Virtual Network Function Manager) Adapter.
  * <p>
- * The VNFM Adapter receives requests through its REST API {@link VnfmAdapterController} which it adapts
- * into ETSI SOL003 compliant LCM (Life Cycle Management) calls towards an ETSI compliant VNFM.
+ * The VNFM Adapter receives requests through its REST API {@link VnfmAdapterController} which it
+ * adapts into ETSI SOL003 compliant LCM (Life Cycle Management) calls towards an ETSI compliant
+ * VNFM.
  *
  * @see <a href=
  *      "https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/003/02.05.01_60/gs_nfv-sol003v020501p.pdf">ETSI
diff --git a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/aai/AaiClientProvider.java b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/aai/AaiClientProvider.java
new file mode 100644
index 0000000000..674314d9da
--- /dev/null
+++ b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/aai/AaiClientProvider.java
@@ -0,0 +1,34 @@
+/*-
+ * ============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=========================================================
+ */
+
+package org.onap.so.adapters.vnfmadapter.extclients.aai;
+
+import org.onap.so.client.aai.AAIResourcesClient;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class AaiClientProvider {
+
+    @Bean
+    public AAIResourcesClient getAaiClient() {
+        return new AAIResourcesClient();
+    }
+}
diff --git a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/aai/AaiHelper.java b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/aai/AaiHelper.java
new file mode 100644
index 0000000000..043d2d309d
--- /dev/null
+++ b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/aai/AaiHelper.java
@@ -0,0 +1,152 @@
+/*-
+ * ============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=========================================================
+ */
+
+package org.onap.so.adapters.vnfmadapter.extclients.aai;
+
+import java.util.Collections;
+import org.onap.aai.domain.yang.EsrSystemInfo;
+import org.onap.aai.domain.yang.EsrSystemInfoList;
+import org.onap.aai.domain.yang.EsrVnfm;
+import org.onap.aai.domain.yang.EsrVnfmList;
+import org.onap.aai.domain.yang.GenericVnf;
+import org.onap.aai.domain.yang.Relationship;
+import org.onap.aai.domain.yang.RelationshipData;
+import org.onap.aai.domain.yang.RelationshipList;
+import org.onap.so.adapters.vnfmadapter.rest.exceptions.VnfmNotFoundException;
+import org.onap.so.client.aai.AAIObjectType;
+import org.onap.so.client.aai.AAIVersion;
+import org.onap.so.client.aai.entities.uri.AAIUriFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+/**
+ * Provides helper methods for interactions with AAI.
+ */
+@Service
+public class AaiHelper {
+
+    private static final Logger logger = LoggerFactory.getLogger(AaiHelper.class);
+    private final AaiServiceProvider aaiServiceProvider;
+
+    @Autowired
+    public AaiHelper(final AaiServiceProvider aaiServiceProvider) {
+        this.aaiServiceProvider = aaiServiceProvider;
+    }
+
+    /**
+     * Add a relationship to the given generic VNF to the given VNFM.
+     *
+     * @param vnf the generic VNF
+     * @param vnfmId the ID of the VNFM
+     */
+    public void addRelationshipFromGenericVnfToVnfm(final GenericVnf vnf, final String vnfmId) {
+        if (vnf.getRelationshipList() == null) {
+            vnf.setRelationshipList(new RelationshipList());
+        }
+        final RelationshipList vnfmRelationshiplist = vnf.getRelationshipList();
+        vnfmRelationshiplist.getRelationship().add(createRelationshipToVnfm(vnfmId));
+
+        aaiServiceProvider.invokePutGenericVnf(vnf);
+    }
+
+    private Relationship createRelationshipToVnfm(final String vnfmId) {
+        final Relationship relationship = new Relationship();
+        relationship.setRelatedTo("esr-vnfm");
+        relationship.setRelationshipLabel("tosca.relationships.DependsOn");
+        relationship.setRelatedLink("/aai/" + AAIVersion.LATEST
+                + AAIUriFactory.createResourceUri(AAIObjectType.VNFM, vnfmId).build().toString());
+        relationship.getRelationshipData().add(createRelationshipData("esr-vnfm.vnfm-id", vnfmId));
+        return relationship;
+    }
+
+    private RelationshipData createRelationshipData(final String key, final String value) {
+        final RelationshipData data = new RelationshipData();
+        data.setRelationshipKey(key);
+        data.setRelationshipValue(value);
+        return data;
+    }
+
+    /**
+     * Get the VNFM assigned for use for the given generic VNF.
+     *
+     * @param vnf the generic VNF
+     * @return the VNFM to use, or <code>null</code> if no VNFM has been assigned yet
+     */
+    public EsrVnfm getAssignedVnfm(final GenericVnf vnf) {
+        for (final Relationship relationship : vnf.getRelationshipList() == null ? Collections.<Relationship>emptyList()
+                : vnf.getRelationshipList().getRelationship()) {
+            if ("esr-vnfm".equals(relationship.getRelatedTo())) {
+                return getRelatedVnfmId(relationship);
+            }
+        }
+        return null;
+    }
+
+    private EsrVnfm getRelatedVnfmId(final Relationship relationship) {
+        for (final RelationshipData relationshipData : relationship.getRelationshipData()) {
+            if ("esr-vnfm.vnfm-id".equals(relationshipData.getRelationshipKey())) {
+                logger.debug("VNFM URL from GenericVnf relataionship: " + relationshipData.getRelationshipValue());
+                return aaiServiceProvider.invokeGetVnfm(relationshipData.getRelationshipValue());
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Select a VNFM to use for the given generic VNF. Should only be used when no VNFM has already been
+     * assigned to the VNF.
+     *
+     * @param vnf the generic VNF
+     * @return the VNFM to use
+     */
+    public EsrVnfm selectVnfm(final GenericVnf vnf) {
+        final EsrVnfmList vnfmsInEsr = aaiServiceProvider.invokeGetVnfms();
+
+        if (vnfmsInEsr == null) {
+            throw new VnfmNotFoundException("No VNFMs found in AAI ESR");
+        }
+        logger.debug("VNFMs in ESR: " + vnfmsInEsr);
+
+        for (final EsrVnfm vnfm : vnfmsInEsr.getEsrVnfm()) {
+            if (vnfmHasMatchingEsrSystemInfoType(vnfm, vnf.getNfType())) {
+                return vnfm;
+            }
+        }
+        throw new VnfmNotFoundException("No matching VNFM found in AAI ESR");
+    }
+
+    private boolean vnfmHasMatchingEsrSystemInfoType(final EsrVnfm vnfm, final String type) {
+        logger.debug("Checking VNFM ID: " + vnfm + ": " + vnfm.getVnfmId());
+
+        final EsrSystemInfoList systemInfolist = aaiServiceProvider.invokeGetVnfmEsrSystemInfoList(vnfm.getVnfmId());
+        if (systemInfolist != null) {
+            for (final EsrSystemInfo esrSystemInfo : systemInfolist.getEsrSystemInfo()) {
+                if (esrSystemInfo.getType().equals(type)) {
+                    logger.debug("Matched VNFM ID: " + vnfm + ", based on type");
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+}
diff --git a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/aai/AaiPropertiesImpl.java b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/aai/AaiPropertiesImpl.java
new file mode 100644
index 0000000000..ea12c5a265
--- /dev/null
+++ b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/aai/AaiPropertiesImpl.java
@@ -0,0 +1,68 @@
+/*-
+ * ============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=========================================================
+ */
+
+package org.onap.so.adapters.vnfmadapter.extclients.aai;
+
+import java.net.MalformedURLException;
+import java.net.URL;
+import org.onap.so.client.aai.AAIProperties;
+import org.onap.so.client.aai.AAIVersion;
+import org.onap.so.spring.SpringContextHelper;
+import org.springframework.context.ApplicationContext;
+
+public class AaiPropertiesImpl implements AAIProperties {
+
+    private final String endpoint;
+    private final String encryptedBasicAuth;
+    private final String encrytptionKey;
+
+    public AaiPropertiesImpl() {
+
+        final ApplicationContext context = SpringContextHelper.getAppContext();
+        this.endpoint = context.getEnvironment().getProperty("aai.endpoint");
+        this.encryptedBasicAuth = context.getEnvironment().getProperty("aai.auth");
+        this.encrytptionKey = context.getEnvironment().getProperty("mso.key");
+    }
+
+    @Override
+    public URL getEndpoint() throws MalformedURLException {
+        return new URL(endpoint);
+    }
+
+    @Override
+    public String getSystemName() {
+        return "MSO";
+    }
+
+    @Override
+    public AAIVersion getDefaultVersion() {
+        return AAIVersion.LATEST;
+    }
+
+    @Override
+    public String getAuth() {
+        return encryptedBasicAuth;
+    }
+
+    @Override
+    public String getKey() {
+        return encrytptionKey;
+    }
+}
diff --git a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/aai/AaiServiceProvider.java b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/aai/AaiServiceProvider.java
new file mode 100644
index 0000000000..b8f0706a8e
--- /dev/null
+++ b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/aai/AaiServiceProvider.java
@@ -0,0 +1,72 @@
+/*-
+ * ============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=========================================================
+ */
+
+package org.onap.so.adapters.vnfmadapter.extclients.aai;
+
+import org.onap.aai.domain.yang.EsrSystemInfoList;
+import org.onap.aai.domain.yang.EsrVnfm;
+import org.onap.aai.domain.yang.EsrVnfmList;
+import org.onap.aai.domain.yang.GenericVnf;
+
+/**
+ * Provides methods for invoking REST calls to AAI.
+ */
+public interface AaiServiceProvider {
+
+    /**
+     * Invoke a get request for a generic VNF.
+     *
+     * @param vnfId the VNF id
+     * @return the generic VNF
+     */
+    GenericVnf invokeGetGenericVnf(final String vnfId);
+
+    /**
+     * Invoke a GET request for the VNFMs.
+     *
+     * @return the VNFMs
+     */
+    EsrVnfmList invokeGetVnfms();
+
+    /**
+     * Invoke a GET request for the esr system info list for a VNFM.
+     *
+     * @return the esr system info list for the VNFM
+     */
+    EsrSystemInfoList invokeGetVnfmEsrSystemInfoList(final String vnfmId);
+
+
+    /**
+     * Invoke a GET request for the a VNFM.
+     *
+     * @param vnfmId the ID of the VNFM
+     * @return the VNFM
+     */
+    EsrVnfm invokeGetVnfm(final String vnfmId);
+
+    /**
+     * Invoke a PUT request for a generic vnf.
+     *
+     * @param vnf the generic vnf
+     * @return
+     */
+    void invokePutGenericVnf(GenericVnf vnf);
+
+}
diff --git a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/aai/AaiServiceProviderImpl.java b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/aai/AaiServiceProviderImpl.java
new file mode 100644
index 0000000000..234748e5e1
--- /dev/null
+++ b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/aai/AaiServiceProviderImpl.java
@@ -0,0 +1,90 @@
+/*-
+ * ============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=========================================================
+ */
+
+package org.onap.so.adapters.vnfmadapter.extclients.aai;
+
+import org.onap.aai.domain.yang.EsrSystemInfoList;
+import org.onap.aai.domain.yang.EsrVnfm;
+import org.onap.aai.domain.yang.EsrVnfmList;
+import org.onap.aai.domain.yang.GenericVnf;
+import org.onap.so.client.aai.AAIObjectType;
+import org.onap.so.client.aai.entities.uri.AAIUriFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+@Service
+public class AaiServiceProviderImpl implements AaiServiceProvider {
+
+    private static final Logger logger = LoggerFactory.getLogger(AaiServiceProviderImpl.class);
+    private final AaiClientProvider aaiClientProvider;
+
+    @Autowired
+    public AaiServiceProviderImpl(final AaiClientProvider aaiClientProvider) {
+        this.aaiClientProvider = aaiClientProvider;
+    }
+
+    @Override
+    public GenericVnf invokeGetGenericVnf(final String vnfId) {
+        return aaiClientProvider.getAaiClient()
+                .get(GenericVnf.class, AAIUriFactory.createResourceUri(AAIObjectType.GENERIC_VNF, vnfId))
+                .orElseGet(() -> {
+                    logger.debug("No vnf found in AAI with ID: {}", vnfId);
+                    return null;
+                });
+    }
+
+    @Override
+    public EsrVnfmList invokeGetVnfms() {
+        return aaiClientProvider.getAaiClient()
+                .get(EsrVnfmList.class, AAIUriFactory.createResourceUri(AAIObjectType.VNFM_LIST)).orElseGet(() -> {
+                    logger.debug("No VNFMs in AAI");
+                    return null;
+                });
+    }
+
+    @Override
+    public EsrVnfm invokeGetVnfm(final String vnfmId) {
+        return aaiClientProvider.getAaiClient()
+                .get(EsrVnfm.class, AAIUriFactory.createResourceUri(AAIObjectType.VNFM, vnfmId)).orElseGet(() -> {
+                    logger.debug("VNFM not found in AAI");
+                    return null;
+                });
+    }
+
+    @Override
+    public EsrSystemInfoList invokeGetVnfmEsrSystemInfoList(final String vnfmId) {
+        return aaiClientProvider.getAaiClient()
+                .get(EsrSystemInfoList.class,
+                        AAIUriFactory.createResourceUri(AAIObjectType.VNFM_ESR_SYSTEM_INFO_LIST, vnfmId))
+                .orElseGet(() -> {
+                    logger.debug("VNFM ESR system info list not found in AAI");
+                    return null;
+                });
+    }
+
+    @Override
+    public void invokePutGenericVnf(final GenericVnf vnf) {
+        aaiClientProvider.getAaiClient()
+                .update(AAIUriFactory.createResourceUri(AAIObjectType.GENERIC_VNF, vnf.getVnfId()), vnf);
+    }
+
+}
diff --git a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/vnfm/VnfmServiceProvider.java b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/vnfm/VnfmServiceProvider.java
new file mode 100644
index 0000000000..0b5b65e7c3
--- /dev/null
+++ b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/vnfm/VnfmServiceProvider.java
@@ -0,0 +1,39 @@
+/*-
+ * ============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=========================================================
+ */
+
+package org.onap.so.adapters.vnfmadapter.extclients.vnfm;
+
+import com.google.common.base.Optional;
+import org.onap.so.adapters.vnfmadapter.extclients.vnfm.model.InlineResponse201;
+
+/**
+ * Provides methods for invoking REST calls to a VNFM.
+ */
+public interface VnfmServiceProvider {
+
+    /**
+     * Invoke a get request for a VNF.
+     *
+     * @param vnfSelfLink the link to the VNF in the VNFM
+     * @return the VNF from the VNFM
+     */
+    Optional<InlineResponse201> getVnf(final String vnfSelfLink);
+
+}
diff --git a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/vnfm/VnfmServiceProviderConfiguration.java b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/vnfm/VnfmServiceProviderConfiguration.java
new file mode 100644
index 0000000000..28b0b14e4c
--- /dev/null
+++ b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/vnfm/VnfmServiceProviderConfiguration.java
@@ -0,0 +1,51 @@
+/*-
+ * ============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=========================================================
+ */
+
+package org.onap.so.adapters.vnfmadapter.extclients.vnfm;
+
+import static org.onap.so.client.RestTemplateConfig.CONFIGURABLE_REST_TEMPLATE;
+import org.onap.so.configuration.rest.BasicHttpHeadersProvider;
+import org.onap.so.configuration.rest.HttpHeadersProvider;
+import org.onap.so.rest.service.HttpRestServiceProvider;
+import org.onap.so.rest.service.HttpRestServiceProviderImpl;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.client.RestTemplate;
+
+/**
+ * Configures the HttpRestServiceProvider for REST call to a VNFM.
+ */
+@Configuration
+public class VnfmServiceProviderConfiguration {
+
+    @Bean(name = "vnfmServiceProvider")
+    public HttpRestServiceProvider httpRestServiceProvider(
+            @Qualifier(CONFIGURABLE_REST_TEMPLATE) @Autowired final RestTemplate restTemplate) {
+        return getHttpRestServiceProvider(restTemplate, new BasicHttpHeadersProvider());
+    }
+
+    private HttpRestServiceProvider getHttpRestServiceProvider(final RestTemplate restTemplate,
+            final HttpHeadersProvider httpHeadersProvider) {
+        return new HttpRestServiceProviderImpl(restTemplate, httpHeadersProvider);
+    }
+
+}
diff --git a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/vnfm/VnfmServiceProviderImpl.java b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/vnfm/VnfmServiceProviderImpl.java
new file mode 100644
index 0000000000..4a141ede4c
--- /dev/null
+++ b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/vnfm/VnfmServiceProviderImpl.java
@@ -0,0 +1,47 @@
+/*-
+ * ============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=========================================================
+ */
+
+package org.onap.so.adapters.vnfmadapter.extclients.vnfm;
+
+import com.google.common.base.Optional;
+import org.onap.so.adapters.vnfmadapter.extclients.vnfm.model.InlineResponse201;
+import org.onap.so.rest.service.HttpRestServiceProvider;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.stereotype.Service;
+
+@Service
+public class VnfmServiceProviderImpl implements VnfmServiceProvider {
+
+    private final HttpRestServiceProvider httpServiceProvider;
+
+    @Autowired
+    public VnfmServiceProviderImpl(
+            @Qualifier("vnfmServiceProvider") final HttpRestServiceProvider httpServiceProvider) {
+        this.httpServiceProvider = httpServiceProvider;
+    }
+
+    @Override
+    public Optional<InlineResponse201> getVnf(final String vnfSelfLink) {
+        return httpServiceProvider.get(vnfSelfLink, InlineResponse201.class);
+    }
+
+
+}
diff --git a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/lifecycle/LifecycleManager.java b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/lifecycle/LifecycleManager.java
new file mode 100644
index 0000000000..4c54ded4ae
--- /dev/null
+++ b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/lifecycle/LifecycleManager.java
@@ -0,0 +1,97 @@
+/*-
+ * ============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=========================================================
+ */
+
+package org.onap.so.adapters.vnfmadapter.lifecycle;
+
+import com.google.common.base.Optional;
+import java.util.UUID;
+import org.onap.aai.domain.yang.EsrVnfm;
+import org.onap.aai.domain.yang.GenericVnf;
+import org.onap.so.adapters.vnfmadapter.extclients.aai.AaiClientProvider;
+import org.onap.so.adapters.vnfmadapter.extclients.aai.AaiHelper;
+import org.onap.so.adapters.vnfmadapter.extclients.vnfm.VnfmServiceProvider;
+import org.onap.so.adapters.vnfmadapter.extclients.vnfm.model.InlineResponse201;
+import org.onap.so.client.aai.AAIObjectType;
+import org.onap.so.client.aai.entities.uri.AAIUriFactory;
+import org.onap.so.client.graphinventory.entities.uri.Depth;
+import org.onap.vnfmadapter.v1.model.CreateVnfRequest;
+import org.onap.vnfmadapter.v1.model.CreateVnfResponse;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class LifecycleManager {
+    private static final Logger logger = LoggerFactory.getLogger(LifecycleManager.class);
+    private final AaiClientProvider aaiClientProvider;
+    private final VnfmServiceProvider vnfmServiceProvider;
+    private final AaiHelper aaiHelper;
+
+    @Autowired
+    LifecycleManager(final AaiClientProvider aaiClientProvider, final AaiHelper aaiHelper,
+            final VnfmServiceProvider vnfmServiceProvider) {
+        this.aaiClientProvider = aaiClientProvider;
+        this.vnfmServiceProvider = vnfmServiceProvider;
+        this.aaiHelper = aaiHelper;
+    }
+
+    public CreateVnfResponse createVnf(final String vnfIdInAai, final CreateVnfRequest request) {
+        final GenericVnf genericVnf = getGenericVnfFromAai(vnfIdInAai);
+        checkIfVnfAlreadyExistsInVnfm(genericVnf);
+
+        EsrVnfm vnfm = aaiHelper.getAssignedVnfm(genericVnf);
+        if (vnfm == null) {
+            vnfm = aaiHelper.selectVnfm(genericVnf);
+            aaiHelper.addRelationshipFromGenericVnfToVnfm(genericVnf, vnfm.getVnfmId());
+        }
+
+        final CreateVnfResponse response = new CreateVnfResponse();
+        response.setJobId(UUID.randomUUID().toString());
+        return response;
+    }
+
+    private GenericVnf getGenericVnfFromAai(final String vnfIdInAai) {
+        final GenericVnf genericVnf = aaiClientProvider.getAaiClient()
+                .get(GenericVnf.class,
+                        AAIUriFactory.createResourceUri(AAIObjectType.GENERIC_VNF, vnfIdInAai).depth(Depth.ONE))
+                .orElseGet(() -> {
+                    logger.debug("No Generic Vnf matched by id");
+                    return null;
+                });
+        logger.debug("Retrieved generic VNF from AAI: " + genericVnf);
+        return genericVnf;
+    }
+
+    private void checkIfVnfAlreadyExistsInVnfm(final GenericVnf genericVnf) {
+        if (genericVnf.getSelflink() != null && !genericVnf.getSelflink().isEmpty()) {
+            Optional<InlineResponse201> response = Optional.absent();
+            try {
+                response = vnfmServiceProvider.getVnf(genericVnf.getSelflink());
+            } catch (final Exception exception) {
+                logger.debug("Ignoring invalid self link in generic vnf", exception);
+            }
+            if (response.isPresent()) {
+                throw new IllegalArgumentException("VNF " + genericVnf.getVnfId()
+                        + " is already defined on the VNFM, self link: " + genericVnf.getSelflink());
+            }
+        }
+    }
+}
diff --git a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/rest/VnfmAdapterController.java b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/rest/VnfmAdapterController.java
index b14ead0c4f..65d5478a57 100644
--- a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/rest/VnfmAdapterController.java
+++ b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/rest/VnfmAdapterController.java
@@ -25,12 +25,14 @@ import java.util.UUID;
 import javax.validation.Valid;
 import javax.ws.rs.core.MediaType;
 import org.onap.logging.ref.slf4j.ONAPLogConstants;
+import org.onap.so.adapters.vnfmadapter.lifecycle.LifecycleManager;
 import org.onap.vnfmadapter.v1.model.CreateVnfRequest;
 import org.onap.vnfmadapter.v1.model.CreateVnfResponse;
 import org.onap.vnfmadapter.v1.model.DeleteVnfResponse;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.slf4j.MDC;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Controller;
@@ -51,6 +53,12 @@ import io.swagger.annotations.ApiParam;
 public class VnfmAdapterController {
 
     private static final Logger logger = LoggerFactory.getLogger(VnfmAdapterController.class);
+    private final LifecycleManager lifecycleManager;
+
+    @Autowired
+    VnfmAdapterController(final LifecycleManager lifecycleManager) {
+        this.lifecycleManager = lifecycleManager;
+    }
 
     @PostMapping(value = "/vnfs/{vnfId}")
     public ResponseEntity<CreateVnfResponse> vnfCreate(
@@ -75,10 +83,9 @@ public class VnfmAdapterController {
 
         logger.info("REST request vnfCreate with body: {}", createVnfRequest);
 
-        final CreateVnfResponse response = new CreateVnfResponse();
-        response.setJobId(UUID.randomUUID().toString());
+        final CreateVnfResponse createVnfResponse = lifecycleManager.createVnf(vnfId, createVnfRequest);
         clearLoggingMDCs();
-        return new ResponseEntity<>(response, HttpStatus.ACCEPTED);
+        return new ResponseEntity<>(createVnfResponse, HttpStatus.ACCEPTED);
     }
 
     @DeleteMapping(value = "/vnfs/{vnfId}")
diff --git a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/rest/exceptions/VnfmNotFoundException.java b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/rest/exceptions/VnfmNotFoundException.java
new file mode 100644
index 0000000000..100aa17893
--- /dev/null
+++ b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/rest/exceptions/VnfmNotFoundException.java
@@ -0,0 +1,35 @@
+/*-
+ * ============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=========================================================
+ */
+
+package org.onap.so.adapters.vnfmadapter.rest.exceptions;
+
+/**
+ * Exception for VNFM not found.
+ */
+public class VnfmNotFoundException extends RuntimeException {
+
+    private static final long serialVersionUID = 6398018034431666933L;
+
+    public VnfmNotFoundException(final String message) {
+        super(message);
+    }
+
+}
+