SOL003 Adapter Package Management - Fetch VNF Package Artifacts

Change-Id: Ibb7d3ff392b42f8e98ce45d45cfc54caad66bdcb
Issue-ID: SO-2416
Signed-off-by: waqas.ikram <waqas.ikram@est.tech>

8 files changed, 184 insertions, 37 deletions

diff --git a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/etsicatalog/EtsiCatalogServiceProvider.java b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/etsicatalog/EtsiCatalogServiceProvider.java
index a73958e544..d4063951bd 100644
--- a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/etsicatalog/EtsiCatalogServiceProvider.java
+++ b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/etsicatalog/EtsiCatalogServiceProvider.java
@@ -20,8 +20,8 @@
 
 package org.onap.so.adapters.vnfmadapter.extclients.etsicatalog;
 
-import org.onap.so.adapters.vnfmadapter.extclients.vnfm.packagemanagement.model.InlineResponse2001;
 import java.util.Optional;
+import org.onap.so.adapters.vnfmadapter.extclients.vnfm.packagemanagement.model.InlineResponse2001;
 
 /**
  * Provides methods for invoking REST calls to the ETSI Catalog Manager.
@@ -53,4 +53,14 @@ public interface EtsiCatalogServiceProvider {
      */
     Optional<InlineResponse2001> getVnfPackage(final String vnfPkgId);
 
+    /**
+     * GET Package Artifact, from VNF Package.
+     *
+     * @param vnfPkgId The ID of the VNF Package from which the artifact will be retrieved.
+     * @param artifactPath Sequence of one or more path segments representing the path of the artifact within the VNF
+     *        Package, e.g., foo/bar/run.sh
+     * @return The Package Artifact of a VNF Package ("vnfPkgId", "artifactPath").
+     */
+    Optional<byte[]> getVnfPackageArtifact(final String vnfPkgId, final String artifactPath);
+
 }
diff --git a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/etsicatalog/EtsiCatalogServiceProviderImpl.java b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/etsicatalog/EtsiCatalogServiceProviderImpl.java
index 96b01f04e4..11a59c2ec8 100644
--- a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/etsicatalog/EtsiCatalogServiceProviderImpl.java
+++ b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/etsicatalog/EtsiCatalogServiceProviderImpl.java
@@ -23,10 +23,7 @@ package org.onap.so.adapters.vnfmadapter.extclients.etsicatalog;
 import java.util.Optional;
 import org.onap.so.adapters.vnfmadapter.extclients.etsicatalog.model.VnfPkgInfo;
 import org.onap.so.adapters.vnfmadapter.extclients.vnfm.packagemanagement.model.InlineResponse2001;
-import org.onap.so.adapters.vnfmadapter.rest.exceptions.EtsiCatalogManagerRequestFailureException;
-import org.onap.so.adapters.vnfmadapter.rest.exceptions.VnfPkgBadRequestException;
-import org.onap.so.adapters.vnfmadapter.rest.exceptions.VnfPkgConflictException;
-import org.onap.so.adapters.vnfmadapter.rest.exceptions.VnfPkgNotFoundException;
+import org.onap.so.adapters.vnfmadapter.rest.exceptions.*;
 import org.onap.so.rest.exceptions.HttpResouceNotFoundException;
 import org.onap.so.rest.exceptions.InvalidRestRequestException;
 import org.onap.so.rest.exceptions.RestProcessingException;
@@ -88,6 +85,31 @@ public class EtsiCatalogServiceProviderImpl implements EtsiCatalogServiceProvide
     }
 
     @Override
+    public Optional<byte[]> getVnfPackageArtifact(final String vnfPkgId, final String artifactPath) {
+        try {
+            final ResponseEntity<byte[]> response = httpServiceProvider.getHttpResponse(
+                    etsiCatalogUrlProvider.getVnfPackageArtifactUrl(vnfPkgId, artifactPath), byte[].class);
+            logger.info("getVnfPackageArtifact Request to ETSI Catalog Manager Status Code: {}",
+                    response.getStatusCodeValue());
+            if (response.getStatusCode() == HttpStatus.OK) {
+                return Optional.ofNullable(response.getBody());
+            }
+        } catch (final HttpResouceNotFoundException httpResouceNotFoundException) {
+            logger.error("Caught HttpResouceNotFoundException", httpResouceNotFoundException);
+            throw new VnfPkgNotFoundException("No Vnf Package Artifact found with vnfPkgId: \"" + vnfPkgId
+                    + "\" and artifactPath: \"" + artifactPath + "\".");
+        } catch (final RestProcessingException restProcessingException) {
+            logger.error("Caught RestProcessingException with Status Code: {}", restProcessingException.getStatusCode(),
+                    restProcessingException);
+            if (restProcessingException.getStatusCode() == HttpStatus.CONFLICT.value()) {
+                throw new VnfPkgConflictException("A conflict occurred with the state of the resource,\n"
+                        + "due to the attribute: onboardingState not being set to ONBOARDED.");
+            }
+        }
+        throw new EtsiCatalogManagerRequestFailureException("Internal Server Error Occurred.");
+    }
+
+    @Override
     public Optional<InlineResponse2001[]> getVnfPackages() {
         try {
             final ResponseEntity<VnfPkgInfo[]> response =
diff --git a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/etsicatalog/EtsiCatalogUrlProvider.java b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/etsicatalog/EtsiCatalogUrlProvider.java
index d233c3f0fd..cc2c7a62a4 100644
--- a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/etsicatalog/EtsiCatalogUrlProvider.java
+++ b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/etsicatalog/EtsiCatalogUrlProvider.java
@@ -79,4 +79,16 @@ public class EtsiCatalogUrlProvider {
         return url;
     }
 
+    /**
+     * Get the URL for retrieving VNF Package Artifacts
+     *
+     * @param vnfPkgId The ID of the VNF Package
+     * @param artifactPath The path to the Artifact
+     * @return the URL for the GET operation
+     */
+    public String getVnfPackageArtifactUrl(final String vnfPkgId, final String artifactPath) {
+        final String url = msbEndpoint + vnfpkgmServiceUrl + "/vnf_packages/" + vnfPkgId + "/artifacts/" + artifactPath;
+        logger.info("getVnfPackageArtifactUrl: {}", url);
+        return url;
+    }
 }
diff --git a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/rest/Sol003PackageManagementController.java b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/rest/Sol003PackageManagementController.java
index 76ec492bd4..3f975fbc9c 100644
--- a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/rest/Sol003PackageManagementController.java
+++ b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/rest/Sol003PackageManagementController.java
@@ -49,7 +49,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 public class Sol003PackageManagementController {
 
     private final EtsiCatalogServiceProvider etsiCatalogServiceProvider;
-    private static final String LOG_REQUEST_RECEIVED = "VNF PackageManagement Controller: {} {} {}";
+    private static final String LOG_REQUEST_RECEIVED = "VNF PackageManagement Controller: {} {} {} {}";
     private static final Logger logger = getLogger(Sol003PackageManagementController.class);
 
     @Autowired
@@ -64,18 +64,18 @@ public class Sol003PackageManagementController {
      * @return An Array of all VNF packages. Object: InlineResponse2001[] Response Code: 200 OK
      */
     @GetMapping(value = "/vnf_packages", produces = {MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML})
-    public ResponseEntity getVnfPackages() {
+    public ResponseEntity<?> getVnfPackages() {
         logger.info(LOG_REQUEST_RECEIVED, "getVnfPackages.");
         final Optional<InlineResponse2001[]> response = etsiCatalogServiceProvider.getVnfPackages();
         if (response.isPresent()) {
             logger.info(LOG_REQUEST_RECEIVED, "getVnfPackages Response: ", HttpStatus.OK);
-            return new ResponseEntity(response.get(), HttpStatus.OK);
+            return ResponseEntity.ok().body(response.get());
         }
         final String errorMessage = "An error occurred, a null response was received by the\n"
                 + " Sol003PackageManagementController from the EtsiCatalogManager using the GET \"vnf_packages\" \n"
                 + "endpoint.";
         logger.error(errorMessage);
-        return new ResponseEntity(buildProblemDetails(errorMessage), HttpStatus.INTERNAL_SERVER_ERROR);
+        return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(buildProblemDetails(errorMessage));
     }
 
     /**
@@ -86,18 +86,18 @@ public class Sol003PackageManagementController {
      * @return A VNF package based on vnfPkgId. Object: VnfPkgInfo Response Code: 200 OK
      */
     @GetMapping(value = "/vnf_packages/{vnfPkgId}", produces = {MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML})
-    public ResponseEntity getVnfPackage(@PathVariable("vnfPkgId") final String vnfPkgId) {
+    public ResponseEntity<?> getVnfPackage(@PathVariable("vnfPkgId") final String vnfPkgId) {
         logger.info(LOG_REQUEST_RECEIVED, "getVnfPackage: ", vnfPkgId);
         final Optional<InlineResponse2001> response = etsiCatalogServiceProvider.getVnfPackage(vnfPkgId);
         if (response.isPresent()) {
             logger.info(LOG_REQUEST_RECEIVED, "getVnfPackage Response: ", HttpStatus.OK);
-            return new ResponseEntity(response.get(), HttpStatus.OK);
+            return ResponseEntity.ok().body(response.get());
         }
         final String errorMessage = "An error occurred, a null response was received by the\n"
                 + " Sol003PackageManagementController from the EtsiCatalogManager using the GET \"vnf_packages\" by vnfPkgId: \""
                 + vnfPkgId + "\" \n" + "endpoint.";
         logger.error(errorMessage);
-        return new ResponseEntity(buildProblemDetails(errorMessage), HttpStatus.INTERNAL_SERVER_ERROR);
+        return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(buildProblemDetails(errorMessage));
     }
 
     /**
@@ -109,7 +109,7 @@ public class Sol003PackageManagementController {
      */
     @GetMapping(value = "/vnf_packages/{vnfPkgId}/vnfd",
             produces = {MediaType.TEXT_PLAIN, APPLICATION_ZIP, MediaType.APPLICATION_JSON})
-    public ResponseEntity<byte[]> getVnfPackageVnfd(@PathVariable("vnfPkgId") final String vnfPkgId) {
+    public ResponseEntity<?> getVnfPackageVnfd(@PathVariable("vnfPkgId") final String vnfPkgId) {
         logger.info(LOG_REQUEST_RECEIVED, "getVnfPackageVnfd: ", vnfPkgId);
         return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
     }
@@ -123,17 +123,18 @@ public class Sol003PackageManagementController {
      */
     @GetMapping(value = "/vnf_packages/{vnfPkgId}/package_content",
             produces = {MediaType.APPLICATION_JSON, APPLICATION_ZIP, MediaType.APPLICATION_OCTET_STREAM})
-    public ResponseEntity getVnfPackageContent(@PathVariable("vnfPkgId") final String vnfPkgId) {
+    public ResponseEntity<?> getVnfPackageContent(@PathVariable("vnfPkgId") final String vnfPkgId) {
         logger.info(LOG_REQUEST_RECEIVED, "getVnfPackageContent Endpoint Invoked with VNF Package ID: ", vnfPkgId);
         final Optional<byte[]> response = etsiCatalogServiceProvider.getVnfPackageContent(vnfPkgId);
         if (response.isPresent()) {
             logger.info(LOG_REQUEST_RECEIVED, "getVnfPackageContent Response: ", HttpStatus.OK);
-            return new ResponseEntity(response.get(), HttpStatus.OK);
+            return ResponseEntity.ok().body(response.get());
         }
-        logger.error("Null response was received from the EtsiCatalogManager using the GET \"package_content\"");
-        return new ResponseEntity(buildProblemDetails("An error occurred, a null response was received by the\n"
+        final String errorMessage = "An error occurred, a null response was received by the\n"
                 + " Sol003PackageManagementController from the EtsiCatalogManager using the GET \"package_content\" \n"
-                + "endpoint."), HttpStatus.INTERNAL_SERVER_ERROR);
+                + "endpoint.";
+        logger.error(errorMessage);
+        return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(buildProblemDetails(errorMessage));
     }
 
     /**
@@ -146,10 +147,20 @@ public class Sol003PackageManagementController {
      */
     @GetMapping(value = "/vnf_packages/{vnfPkgId}/artifacts/{artifactPath}",
             produces = {MediaType.APPLICATION_OCTET_STREAM, MediaType.APPLICATION_JSON})
-    public ResponseEntity<byte[]> getVnfPackageArtifact(@PathVariable("vnfPkgId") final String vnfPkgId,
+    public ResponseEntity<?> getVnfPackageArtifact(@PathVariable("vnfPkgId") final String vnfPkgId,
             @PathVariable("artifactPath") final String artifactPath) {
-        logger.info(LOG_REQUEST_RECEIVED, "getVnfPackageArtifact: vnfPkgId=", vnfPkgId, " artifactPath=", artifactPath);
-        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+        logger.info(LOG_REQUEST_RECEIVED, "getVnfPackageArtifact: vnfPkgId= ", vnfPkgId, " artifactPath=",
+                artifactPath);
+        final Optional<byte[]> response = etsiCatalogServiceProvider.getVnfPackageArtifact(vnfPkgId, artifactPath);
+        if (response.isPresent()) {
+            logger.info(LOG_REQUEST_RECEIVED, "getVnfPackageArtifact Response: ", HttpStatus.OK);
+            return ResponseEntity.ok().body(response.get());
+        }
+        final String errorMessage = "An error occurred, a null response was received by the\n"
+                + " Sol003PackageManagementController from the EtsiCatalogManager using the\n GET \"vnf_packages\" by vnfPkgId: \""
+                + vnfPkgId + "\" for artifactPath: \"" + artifactPath + "\"\n" + "endpoint.";
+        logger.error(errorMessage);
+        return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(buildProblemDetails(errorMessage));
     }
 
     /**
diff --git a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/Sol003PackageManagementControllerExceptionHandler.java b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/rest/exceptions/Sol003PackageManagementControllerExceptionHandler.java
index 2a97bb47e4..a49063a72f 100644
--- a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/Sol003PackageManagementControllerExceptionHandler.java
+++ b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/rest/exceptions/Sol003PackageManagementControllerExceptionHandler.java
@@ -18,7 +18,7 @@
  * ============LICENSE_END=========================================================
  */
 
-package org.onap.so.adapters.vnfmadapter;
+package org.onap.so.adapters.vnfmadapter.rest.exceptions;
 
 import org.onap.so.adapters.vnfmadapter.extclients.etsicatalog.model.ProblemDetails;
 import org.onap.so.adapters.vnfmadapter.rest.Sol003PackageManagementController;
diff --git a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/rest/exceptions/VnfPkgConflictException.java b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/rest/exceptions/VnfPkgConflictException.java
index 0cc9c5bd7e..f9aa2a0e21 100644
--- a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/rest/exceptions/VnfPkgConflictException.java
+++ b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/rest/exceptions/VnfPkgConflictException.java
@@ -23,7 +23,7 @@ import org.springframework.http.HttpStatus;
 import org.springframework.web.bind.annotation.ResponseStatus;
 
 /**
- * Exception for a Vnfpkg Conflict failure, due to state of resource.
+ * Exception for a VnfPkg Conflict failures, due to state of resource.
  * 
  * @author gareth.roper@est.tech
  */
diff --git a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/rest/exceptions/VnfPkgNotFoundException.java b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/rest/exceptions/VnfPkgNotFoundException.java
index 0f9f214643..c15e7052ab 100644
--- a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/rest/exceptions/VnfPkgNotFoundException.java
+++ b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/rest/exceptions/VnfPkgNotFoundException.java
@@ -23,7 +23,7 @@ import org.springframework.http.HttpStatus;
 import org.springframework.web.bind.annotation.ResponseStatus;
 
 /**
- * Exception for a Vnfpkg Not Found Failure
+ * Exception for VnfPkg Not Found Failures
  * 
  * @author gareth.roper@est.tech
  */
diff --git a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/test/java/org/onap/so/adapters/vnfmadapter/rest/Sol003PackageManagementControllerTest.java b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/test/java/org/onap/so/adapters/vnfmadapter/rest/Sol003PackageManagementControllerTest.java
index 857bd7dc3e..dbc8ef251d 100644
--- a/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/test/java/org/onap/so/adapters/vnfmadapter/rest/Sol003PackageManagementControllerTest.java
+++ b/adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/test/java/org/onap/so/adapters/vnfmadapter/rest/Sol003PackageManagementControllerTest.java
@@ -44,11 +44,7 @@ import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.boot.test.web.client.TestRestTemplate;
 import org.springframework.boot.web.server.LocalServerPort;
-import org.springframework.http.HttpEntity;
-import org.springframework.http.HttpMethod;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.MediaType;
-import org.springframework.http.ResponseEntity;
+import org.springframework.http.*;
 import org.springframework.test.context.ActiveProfiles;
 import org.springframework.test.context.junit4.SpringRunner;
 import org.springframework.test.web.client.MockRestServiceServer;
@@ -207,6 +203,109 @@ public class Sol003PackageManagementControllerTest {
     }
 
     @Test
+    public void testGetPackageArtifact_ValidArray_Success() {
+        final byte[] responseArray = buildByteArrayWithRandomData(10);
+
+        mockRestServer.expect(requestTo(MSB_BASE_URL + "/" + VNF_PACKAGE_ID + "/artifacts/" + ARTIFACT_PATH))
+                .andExpect(method(HttpMethod.GET))
+                .andRespond(withSuccess(responseArray, MediaType.APPLICATION_OCTET_STREAM));
+
+        final String testURL = "http://localhost:" + port + PACKAGE_MANAGEMENT_BASE_URL + "/vnf_packages/"
+                + VNF_PACKAGE_ID + "/artifacts/" + ARTIFACT_PATH;
+        final HttpEntity<?> request = new HttpEntity<>(basicHttpHeadersProvider.getHttpHeaders());
+        final ResponseEntity<byte[]> responseEntity =
+                restTemplate.withBasicAuth("test", "test").exchange(testURL, HttpMethod.GET, request, byte[].class);
+
+        assertEquals(byte[].class, responseEntity.getBody().getClass());
+        assertArrayEquals(responseEntity.getBody(), responseArray);
+        assertEquals(HttpStatus.OK, responseEntity.getStatusCode());
+    }
+
+    @Test
+    public void testOnGetPackageArtifact_Conflict_Fail() {
+        mockRestServer.expect(requestTo(MSB_BASE_URL + "/" + VNF_PACKAGE_ID + "/artifacts/" + ARTIFACT_PATH))
+                .andExpect(method(HttpMethod.GET)).andRespond(withStatus(HttpStatus.CONFLICT));
+
+        final ResponseEntity<ProblemDetails> responseEntity =
+                sendHttpRequest(VNF_PACKAGE_ID + "/artifacts/" + ARTIFACT_PATH);
+
+        assertNotNull(responseEntity.getBody());
+        assertEquals(HttpStatus.CONFLICT, responseEntity.getStatusCode());
+    }
+
+    @Test
+    public void testOnGetPackageArtifact_NotFound_Fail() {
+        mockRestServer.expect(requestTo(MSB_BASE_URL + "/" + VNF_PACKAGE_ID + "/artifacts/" + ARTIFACT_PATH))
+                .andExpect(method(HttpMethod.GET)).andRespond(withStatus(HttpStatus.NOT_FOUND));
+
+        final ResponseEntity<ProblemDetails> responseEntity =
+                sendHttpRequest(VNF_PACKAGE_ID + "/artifacts/" + ARTIFACT_PATH);
+
+        assertNotNull(responseEntity.getBody());
+        assertEquals(HttpStatus.NOT_FOUND, responseEntity.getStatusCode());
+    }
+
+    @Test
+    public void testOnGetPackageArtifact_UnauthorizedClient_Fail() {
+        final String testURL = "http://localhost:" + port + PACKAGE_MANAGEMENT_BASE_URL + "/vnf_packages/"
+                + VNF_PACKAGE_ID + "/artifacts/" + ARTIFACT_PATH;
+        final HttpEntity<?> request = new HttpEntity<>(basicHttpHeadersProvider.getHttpHeaders());
+        final ResponseEntity<ProblemDetails> responseEntity =
+                restTemplate.exchange(testURL, HttpMethod.GET, request, ProblemDetails.class);
+
+        assertNotNull(responseEntity.getBody());
+        assertEquals(HttpStatus.UNAUTHORIZED, responseEntity.getStatusCode());
+    }
+
+    @Test
+    public void testOnGetPackageArtifact_InternalServerError_Fail() {
+        mockRestServer.expect(requestTo(MSB_BASE_URL + "/" + VNF_PACKAGE_ID + "/artifacts/" + ARTIFACT_PATH))
+                .andExpect(method(HttpMethod.GET)).andRespond(withStatus(HttpStatus.INTERNAL_SERVER_ERROR));
+
+        final ResponseEntity<ProblemDetails> responseEntity =
+                sendHttpRequest(VNF_PACKAGE_ID + "/artifacts/" + ARTIFACT_PATH);
+
+        assertNotNull(responseEntity.getBody());
+        assertEquals(HttpStatus.INTERNAL_SERVER_ERROR, responseEntity.getStatusCode());
+    }
+
+    @Test
+    public void testOnGetPackageArtifact_BadRequest_Fail() {
+        mockRestServer.expect(requestTo(MSB_BASE_URL + "/" + VNF_PACKAGE_ID + "/artifacts/" + ARTIFACT_PATH))
+                .andExpect(method(HttpMethod.GET)).andRespond(withStatus(HttpStatus.BAD_REQUEST));
+
+        final ResponseEntity<ProblemDetails> responseEntity =
+                sendHttpRequest(VNF_PACKAGE_ID + "/artifacts/" + ARTIFACT_PATH);
+
+        assertNotNull(responseEntity.getBody());
+        assertEquals(HttpStatus.INTERNAL_SERVER_ERROR, responseEntity.getStatusCode());
+    }
+
+    @Test
+    public void testOnGetPackageArtifact_UnauthorizedServer_InternalError_Fail() {
+        mockRestServer.expect(requestTo(MSB_BASE_URL + "/" + VNF_PACKAGE_ID + "/artifacts/" + ARTIFACT_PATH))
+                .andExpect(method(HttpMethod.GET)).andRespond(withStatus(HttpStatus.UNAUTHORIZED));
+
+        final ResponseEntity<ProblemDetails> responseEntity =
+                sendHttpRequest(VNF_PACKAGE_ID + "/artifacts/" + ARTIFACT_PATH);
+
+        assertNotNull(responseEntity.getBody());
+        assertEquals(HttpStatus.INTERNAL_SERVER_ERROR, responseEntity.getStatusCode());
+    }
+
+    @Test
+    public void testGetPackageArtifact_SuccessResponseFromServerWithNullPackage_Fail() {
+        mockRestServer.expect(requestTo(MSB_BASE_URL + "/" + VNF_PACKAGE_ID + "/artifacts/" + ARTIFACT_PATH))
+                .andExpect(method(HttpMethod.GET)).andRespond(withSuccess());
+
+        final ResponseEntity<ProblemDetails> responseEntity =
+                sendHttpRequest(VNF_PACKAGE_ID + "/artifacts/" + ARTIFACT_PATH);
+
+        assertNotNull(responseEntity.getBody());
+        assertEquals(HttpStatus.INTERNAL_SERVER_ERROR, responseEntity.getStatusCode());
+    }
+
+    @Test
     public void testVnfPackagesReceivedAsInlineResponse2001ListIfGetVnfPackagesSuccessful() {
         final VnfPkgInfo[] responses = createVnfPkgArray();
 
@@ -369,20 +468,13 @@ public class Sol003PackageManagementControllerTest {
                 + VNF_PACKAGE_ID + "\" \n" + "endpoint.", problemDetails.getDetail());
     }
 
-    // The below 2 test methods are here to improve code coverage and provide a foundation for writing future tests
+    // The below test method is here to improve code coverage and provide a foundation for writing future tests
     @Test
     public void testGetVnfd_Not_Implemented() {
         final ResponseEntity<ProblemDetails> responseEntity = sendHttpRequest(VNF_PACKAGE_ID + "/vnfd");
         assertEquals(HttpStatus.NOT_IMPLEMENTED, responseEntity.getStatusCode());
     }
 
-    @Test
-    public void testGetArtifact_Not_Implemented() {
-        final ResponseEntity<ProblemDetails> responseEntity =
-                sendHttpRequest(VNF_PACKAGE_ID + "/artifacts/" + ARTIFACT_PATH);
-        assertEquals(HttpStatus.NOT_IMPLEMENTED, responseEntity.getStatusCode());
-    }
-
     // Simply returns a byte array filled with random data, for use in the tests.
     private byte[] buildByteArrayWithRandomData(final int sizeInKb) {
         final Random rnd = new Random();