diff options
Diffstat (limited to 'controlloop/common/model-impl/so/src/main/java/org/onap/policy/so/SOManager.java')
-rw-r--r-- | controlloop/common/model-impl/so/src/main/java/org/onap/policy/so/SOManager.java | 526 |
1 files changed, 307 insertions, 219 deletions
diff --git a/controlloop/common/model-impl/so/src/main/java/org/onap/policy/so/SOManager.java b/controlloop/common/model-impl/so/src/main/java/org/onap/policy/so/SOManager.java index 35227d310..a40a2d10f 100644 --- a/controlloop/common/model-impl/so/src/main/java/org/onap/policy/so/SOManager.java +++ b/controlloop/common/model-impl/so/src/main/java/org/onap/policy/so/SOManager.java @@ -20,235 +20,323 @@ package org.onap.policy.so; +import com.google.gson.GsonBuilder; +import com.google.gson.JsonSyntaxException; + import java.util.Base64; import java.util.HashMap; import java.util.Map; - -import org.onap.policy.so.util.Serialization; -import org.onap.policy.drools.system.PolicyEngine; -import org.onap.policy.rest.RESTManager; -import org.onap.policy.rest.RESTManager.Pair; -import org.drools.core.WorkingMemory; - +import java.util.concurrent.Callable; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; import java.util.concurrent.Future; +import org.drools.core.WorkingMemory; +import org.onap.policy.drools.system.PolicyEngine; +import org.onap.policy.rest.RESTManager; +import org.onap.policy.rest.RESTManager.Pair; +import org.onap.policy.so.util.Serialization; import org.slf4j.Logger; import org.slf4j.LoggerFactory; -import com.google.gson.Gson; -import com.google.gson.GsonBuilder; -import com.google.gson.JsonSyntaxException; +/** + * This class handles the interface towards SO (Service Orchestrator) for the ONAP Policy Framework. The SO + * API is defined at this link: + * http://onap.readthedocs.io/en/latest/submodules/so.git/docs/SO_R1_Interface.html#get-orchestration-request + * + */ public final class SOManager { - - private static final Logger logger = LoggerFactory.getLogger(SOManager.class); - private static final Logger netLogger = LoggerFactory.getLogger(org.onap.policy.drools.event.comm.Topic.NETWORK_LOGGER); - private static ExecutorService executors = Executors.newCachedThreadPool(); - - static final String MEDIA_TYPE = "application/json"; - - static final String LINE_SEPARATOR = System.lineSeparator(); - - // REST get timeout value in milliseconds - private static final long DEFAULT_GET_REQUEST_TIMEOUT = 20000; - - // The REST manager used for processing REST calls for this VFC manager - private RESTManager restManager; - - private long restGetTimeout = DEFAULT_GET_REQUEST_TIMEOUT; - - public SOManager() { - restManager = new RESTManager(); - } - - public SOResponse createModuleInstance(String url, String urlBase, String username, String password, SORequest request) { - - // - // Call REST - // - Map<String, String> headers = new HashMap<>(); - headers.put("Accept", MEDIA_TYPE); - - // - // 201 - CREATED - you are done just return - // - String requestJson = Serialization.gsonPretty.toJson(request); - netLogger.info("[OUT|{}|{}|{}|{}|{}|{}|]{}{}", "SO", url, username, password, headers, MEDIA_TYPE, LINE_SEPARATOR, requestJson); - Pair<Integer, String> httpDetails = restManager.post(url, username, password, headers, MEDIA_TYPE, requestJson); - - if (httpDetails == null) { - return null; - } - - if (httpDetails.a != 202) { - return null; - } - - try { - SOResponse response = Serialization.gsonPretty.fromJson(httpDetails.b, SOResponse.class); - - String body = Serialization.gsonPretty.toJson(response); - logger.debug("***** Response to post:"); - logger.debug(body); - - String requestId = response.getRequestReferences().getRequestId(); - int attemptsLeft = 20; - - String urlGet = urlBase + "/orchestrationRequests/v2/" + requestId; - SOResponse responseGet = null; - - while (attemptsLeft-- > 0) { - Pair<Integer, String> httpDetailsGet = restManager.get(urlGet, username, password, headers); - if (httpDetailsGet == null) { - return null; - } - - responseGet = Serialization.gsonPretty.fromJson(httpDetailsGet.b, SOResponse.class); - netLogger.info("[IN|{}|{}|]{}{}", "SO", urlGet, LINE_SEPARATOR, httpDetailsGet.b); - - body = Serialization.gsonPretty.toJson(responseGet); - logger.debug("***** Response to get:"); - logger.debug(body); - - if (httpDetailsGet.a == 200 && - (responseGet.getRequest().getRequestStatus().getRequestState().equalsIgnoreCase("COMPLETE") - || responseGet.getRequest().getRequestStatus().getRequestState().equalsIgnoreCase("FAILED"))) { - logger.debug("***** ######## VF Module Creation {}", - responseGet.getRequest().getRequestStatus().getRequestState()); - return responseGet; - } - Thread.sleep(restGetTimeout); - } - - if (responseGet != null && responseGet.getRequest() != null - && responseGet.getRequest().getRequestStatus() != null - && responseGet.getRequest().getRequestStatus().getRequestState() != null) { - logger.warn("***** ######## VF Module Creation timeout. Status: ( {})", - responseGet.getRequest().getRequestStatus().getRequestState()); - } - - return responseGet; - } - catch (JsonSyntaxException e) { - logger.error("Failed to deserialize into SOResponse: ", e); - } - catch (InterruptedException e) { - logger.error("Interrupted exception: ", e); - Thread.currentThread().interrupt(); - } - - return null; - } - - /** - * - * @param wm - * @param url - * @param urlBase - * @param username - * @param password - * @param request - * - * This method makes an asynchronous Rest call to MSO and inserts the response into the - * Drools working memory - * @return - */ - public Future<?> asyncSORestCall(String requestID, WorkingMemory wm, String serviceInstanceId, String vnfInstanceId, SORequest request) { - return executors.submit(new AsyncSORestCallThread(requestID, wm, serviceInstanceId, vnfInstanceId, request)); - } - - private class AsyncSORestCallThread implements Runnable { - final String requestID; - final WorkingMemory wm; - final String serviceInstanceId; - final String vnfInstanceId; - final SORequest request; - - private AsyncSORestCallThread(final String requestID, final WorkingMemory wm, final String serviceInstanceId, final String vnfInstanceId, final SORequest request) { - this.requestID = requestID; - this.wm = wm; - this.serviceInstanceId = serviceInstanceId; - this.vnfInstanceId = vnfInstanceId; - this.request = request; - } - - @Override - public void run() { - try { - String serverRoot = PolicyEngine.manager.getEnvironmentProperty("so.url"); - String username = PolicyEngine.manager.getEnvironmentProperty("so.username"); - String password = PolicyEngine.manager.getEnvironmentProperty("so.password"); - - String url = serverRoot + "/serviceInstances/v5/" + serviceInstanceId + "/vnfs/" - + vnfInstanceId + "/vfModules"; - - String auth = username + ":" + password; - - Map<String, String> headers = new HashMap<>(); - byte[] encodedBytes = Base64.getEncoder().encode(auth.getBytes()); - headers.put("Accept", MEDIA_TYPE); - headers.put("Authorization", "Basic " + new String(encodedBytes)); - - Gson gsonPretty = - new GsonBuilder().disableHtmlEscaping().setPrettyPrinting().create(); - - String soJson = gsonPretty.toJson(request); - - SOResponse so = new SOResponse(); - netLogger.info("[OUT|{}|{}|]{}{}", "SO", url, LINE_SEPARATOR, soJson); - Pair<Integer, String> httpResponse = restManager.post(url, "policy", "policy", headers, MEDIA_TYPE, soJson); - - if (httpResponse != null) { - if (httpResponse.b != null && httpResponse.a != null) { - netLogger.info("[IN|{}|{}|]{}{}", url, "SO", LINE_SEPARATOR, httpResponse.b); - - Gson gson = new Gson(); - so = gson.fromJson(httpResponse.b, SOResponse.class); - so.setHttpResponseCode(httpResponse.a); - } - else { - logger.error("SO Response status/code is null."); - so.setHttpResponseCode(999); - } - - } - else { - logger.error("SO Response returned null."); - so.setHttpResponseCode(999); - } - - SOResponseWrapper soWrapper = new SOResponseWrapper(so, requestID); - wm.insert(soWrapper); - if (logger.isInfoEnabled()) { - logger.info("SOResponse inserted " + gsonPretty.toJson(soWrapper)); - } - } - catch (Exception e) { - logger.error("Error while performing asyncSORestCall: " + e.getMessage(), e); - - // create dummy SO object to trigger cleanup - SOResponse so = new SOResponse(); - so.setHttpResponseCode(999); - wm.insert(so); - } - } - } - - /** - * method to allow tuning of REST get timeout - * @param restGetTimeout the timeout value - */ - protected void setRestGetTimeout(final long restGetTimeout) { - this.restGetTimeout = restGetTimeout; - } - - /** - * Protected setter for rest manager to allow mocked rest manager to be used for testing - * @param restManager the test REST manager - */ - protected void setRestManager(final RESTManager restManager) { - this.restManager = restManager; - } + private static final Logger logger = LoggerFactory.getLogger(SOManager.class); + private static final Logger netLogger = LoggerFactory.getLogger(org.onap.policy.drools.event.comm.Topic.NETWORK_LOGGER); + private static ExecutorService executors = Executors.newCachedThreadPool(); + + private static final int SO_RESPONSE_ERROR = 999; + private static final String MEDIA_TYPE = "application/json"; + private static final String LINE_SEPARATOR = System.lineSeparator(); + + // REST get timeout value in milliseconds + private static final int GET_REQUESTS_BEFORE_TIMEOUT = 20; + private static final long GET_REQUEST_WAIT_INTERVAL = 20000; + + // The REST manager used for processing REST calls for this VFC manager + private RESTManager restManager; + + private long restGetTimeout = GET_REQUEST_WAIT_INTERVAL; + + /** + * Default constructor + */ + public SOManager() { + restManager = new RESTManager(); + } + + /** + * Create a service instance in SO. + * @param url the SO URL + * @param urlBase the base URL + * @param username user name on SO + * @param password password on SO + * @param request the request to issue to SO + * @return + */ + public SOResponse createModuleInstance(final String url, final String urlBase, final String username, final String password, final SORequest request) { + // Issue the HTTP POST request to SO to create the service instance + String requestJson = Serialization.gsonPretty.toJson(request); + netLogger.info("[OUT|{}|{}|{}|{}|{}|{}|]{}{}", "SO", url, username, password, createSimpleHeaders(), MEDIA_TYPE, LINE_SEPARATOR, requestJson); + Pair<Integer, String> httpResponse = restManager.post(url, username, password, createSimpleHeaders(), MEDIA_TYPE, requestJson); + + // Process the response from SO + SOResponse response = waitForSOOperationCompletion(urlBase, username, password, url, httpResponse); + if (SO_RESPONSE_ERROR != response.getHttpResponseCode()) { + return response; + } + else { + return null; + } + } + + /** + * This method makes an asynchronous Rest call to MSO and inserts the response into Drools working memory. + * @param wm the Drools working memory + * @param url the URL to use on the POST request + * @param urlBase the SO base URL + * @param username user name for SO requests + * @param password password for SO requests + * @param request the SO request + * @return a concurrent Future for the thread that handles the request + */ + public Future<SOResponse> asyncSORestCall(final String requestID, final WorkingMemory wm, final String serviceInstanceId, final String vnfInstanceId, final SORequest request) { + return executors.submit(new AsyncSORestCallThread(requestID, wm, serviceInstanceId, vnfInstanceId, request)); + } + + /** + * This class handles an asynchronous request to SO as a thread. + */ + private class AsyncSORestCallThread implements Callable<SOResponse> { + final String requestID; + final WorkingMemory wm; + final String serviceInstanceId; + final String vnfInstanceId; + final SORequest request; + + /** + * Constructor, sets the context of the request. + * @param requestID The request ID + * @param wm reference to the Drools working memory + * @param serviceInstanceId the service instance in SO to use + * @param vnfInstanceId the VNF instance that is the subject of the request + * @param request the request itself + */ + private AsyncSORestCallThread(final String requestID, final WorkingMemory wm, final String serviceInstanceId, final String vnfInstanceId, final SORequest request) { + this.requestID = requestID; + this.wm = wm; + this.serviceInstanceId = serviceInstanceId; + this.vnfInstanceId = vnfInstanceId; + this.request = request; + } + + /** + * Process the asynchronous SO request. + */ + @Override + public SOResponse call() { + String urlBase = PolicyEngine.manager.getEnvironmentProperty("so.url"); + String username = PolicyEngine.manager.getEnvironmentProperty("so.username"); + String password = PolicyEngine.manager.getEnvironmentProperty("so.password"); + + // The URL of the request we will POST + String url = urlBase + "/serviceInstances/v5/" + serviceInstanceId + "/vnfs/" + + vnfInstanceId + "/vfModules"; + + // Create a JSON representation of the request + String soJson = new GsonBuilder().disableHtmlEscaping().setPrettyPrinting().create().toJson(request); + + netLogger.info("[OUT|{}|{}|]{}{}", "SO", url, LINE_SEPARATOR, soJson); + Pair<Integer, String> httpResponse = restManager.post(url, "policy", "policy", createAuthenticateHeaders(username, password), MEDIA_TYPE, soJson); + + // Process the response from SO + SOResponse response = waitForSOOperationCompletion(urlBase, username, password, url, httpResponse); + + // Return the response to Drools in its working memory + SOResponseWrapper soWrapper = new SOResponseWrapper(response, requestID); + wm.insert(soWrapper); + + return response; + } + + /** + * Create HTTP headers for authenticated requests to SO. + * @param username user name on SO + * @param password password on SO + * @return the HTTP headers + */ + private Map<String, String> createAuthenticateHeaders(final String username, final String password) { + String auth = username + ":" + password; + + Map<String, String> headers = new HashMap<>(); + byte[] encodedBytes = Base64.getEncoder().encode(auth.getBytes()); + headers.put("Accept", MEDIA_TYPE); + headers.put("Authorization", "Basic " + new String(encodedBytes)); + + return headers; + } + } + + /** + * Wait for the SO operation we have ordered to complete. + * @param urlBaseSO The base URL for SO + * @param username user name on SO + * @param password password on SO + * @param initialRequestURL The URL of the initial HTTP request + * @param initialHTTPResponse The initial HTTP message returned from SO + * @return The parsed final response of SO to the request + */ + private SOResponse waitForSOOperationCompletion(final String urlBaseSO, final String username, final String password, + final String initialRequestURL, final Pair<Integer, String> initialHTTPResponse) { + // Process the initial response from SO, the response to a post + SOResponse response = processSOResponse(initialRequestURL, initialHTTPResponse); + if (SO_RESPONSE_ERROR == response.getHttpResponseCode()) { + return response; + } + + // The SO URL to use to get the status of orchestration requests + String urlGet = urlBaseSO + "/orchestrationRequests/v5/" + response.getRequestReferences().getRequestId(); + + // The HTTP status code of the latest response + Pair<Integer, String> latestHTTPResponse = initialHTTPResponse; + + // Wait for the response from SO + for (int attemptsLeft = GET_REQUESTS_BEFORE_TIMEOUT; attemptsLeft >= 0; attemptsLeft--) { + // The SO request may have completed even on the first request so we check the response here before + // issuing any other requests + if (isRequestStateFinished(latestHTTPResponse, response)) { + return response; + } + + // Wait for the defined interval before issuing a get + try { + Thread.sleep(restGetTimeout); + } + catch (InterruptedException e) { + logger.error("Interrupted exception: ", e); + Thread.currentThread().interrupt(); + response.setHttpResponseCode(SO_RESPONSE_ERROR); + return response; + } + + // Issue a GET to find the current status of our request + netLogger.info("[OUT|{}|{}|{}|{}|{}|{}|]{}", "SO", urlGet, username, password, createSimpleHeaders(), MEDIA_TYPE, LINE_SEPARATOR); + Pair<Integer, String> httpResponse = restManager.get(urlGet, username, password, createSimpleHeaders()); + + // Get our response + response = processSOResponse(urlGet, httpResponse); + if (SO_RESPONSE_ERROR == response.getHttpResponseCode()) { + return response; + } + + // Our latest HTTP response code + latestHTTPResponse = httpResponse; + } + + // We have timed out on the SO request + response.setHttpResponseCode(SO_RESPONSE_ERROR); + return response; + } + + /** + * Parse the response message from SO into a SOResponse object. + * @param requestURL The URL of the HTTP request + * @param httpDetails The HTTP message returned from SO + * @return The parsed response + */ + private SOResponse processSOResponse(final String requestURL, final Pair<Integer, String> httpResponse) { + SOResponse response = new SOResponse(); + + // A null httpDetails indicates a HTTP problem, a valid response from SO must be either 200 or 202 + if (!httpResultIsNullFree(httpResponse) || (httpResponse.a != 200 && httpResponse.a != 202)) { + logger.error("Invalid HTTP response received from SO"); + response.setHttpResponseCode(SO_RESPONSE_ERROR); + return response; + } + + // Parse the JSON of the response into our POJO + try { + response = Serialization.gsonPretty.fromJson(httpResponse.b, SOResponse.class); + } + catch (JsonSyntaxException e) { + logger.error("Failed to deserialize HTTP response into SOResponse: ", e); + response.setHttpResponseCode(SO_RESPONSE_ERROR); + return response; + } + + // Set the HTTP response code of the response if needed + if (response.getHttpResponseCode() == 0) { + response.setHttpResponseCode(httpResponse.a); + } + + netLogger.info("[IN|{}|{}|]{}{}", "SO", requestURL, LINE_SEPARATOR, httpResponse.b); + + if (logger.isDebugEnabled()) { + logger.debug("***** Response to SO Request to URL {}:", requestURL); + logger.debug(httpResponse.b); + } + + return response; + } + + /** + * Method to allow tuning of REST get timeout. + * @param restGetTimeout the timeout value + */ + protected void setRestGetTimeout(final long restGetTimeout) { + this.restGetTimeout = restGetTimeout; + } + + /** + * Check that the request state of a response is defined. + * @param response The response to check + * @return true if the request for the response is defined + */ + private boolean isRequestStateDefined(final SOResponse response) { + return response != null && + response.getRequest() != null && + response.getRequest().getRequestStatus() != null && + response.getRequest().getRequestStatus().getRequestState() != null; + } + + /** + * Check that the request state of a response is finished. + * @param latestHTTPDetails the HTTP details of the response + * @param response The response to check + * @return true if the request for the response is finished + */ + private boolean isRequestStateFinished(final Pair<Integer, String> latestHTTPDetails, final SOResponse response) { + if (latestHTTPDetails != null && 200 == latestHTTPDetails.a && isRequestStateDefined(response)) { + String requestState = response.getRequest().getRequestStatus().getRequestState(); + return "COMPLETE".equalsIgnoreCase(requestState) || "FAILED".equalsIgnoreCase(requestState); + } + else { + return false; + } + } + + /** + * Check that a HTTP operation result has no nulls. + * @param httpOperationResult the result to check + * @return true if no nulls are found + */ + private boolean httpResultIsNullFree(Pair<Integer, String> httpOperationResult) { + return httpOperationResult != null && httpOperationResult.a != null && httpOperationResult.b != null; + } + + /** + * Create simple HTTP headers for unauthenticated requests to SO. + * @return the HTTP headers + */ + private Map<String, String> createSimpleHeaders() { + Map<String, String> headers = new HashMap<>(); + headers.put("Accept", MEDIA_TYPE); + return headers; + } } |