* ========================LICENSE_START=================================
* O-RAN-SC
* %%
- * Copyright (C) 2019 Nordix Foundation
+ * Copyright (C) 2020 Nordix Foundation
* %%
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
+import com.google.gson.JsonObject;
+
import java.io.IOException;
+import java.util.Optional;
+
import org.onap.dmaap.mr.client.MRBatchingPublisher;
import org.oransc.policyagent.clients.AsyncRestClient;
-import org.oransc.policyagent.configuration.ApplicationConfig;
-import org.oransc.policyagent.dmaap.DmaapRequestMessage.Operation;
+import org.oransc.policyagent.exceptions.ServiceException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpStatus;
private static final Logger logger = LoggerFactory.getLogger(DmaapMessageHandler.class);
private static Gson gson = new GsonBuilder() //
- .serializeNulls() //
- .create(); //
+ .create(); //
private final MRBatchingPublisher dmaapClient;
private final AsyncRestClient agentClient;
- public DmaapMessageHandler(MRBatchingPublisher dmaapClient, ApplicationConfig applicationConfig,
- AsyncRestClient agentClient) {
+ public DmaapMessageHandler(MRBatchingPublisher dmaapClient, AsyncRestClient agentClient) {
this.agentClient = agentClient;
this.dmaapClient = dmaapClient;
}
public void handleDmaapMsg(String msg) {
- try {
- this.createTask(msg) //
- .subscribe(x -> logger.debug("handleDmaapMsg: " + x), //
- throwable -> logger.warn("handleDmaapMsg failure ", throwable), //
- () -> logger.debug("handleDmaapMsg complete"));
- } catch (Exception e) {
- logger.warn("Received unparsable message from DMAAP: {}", msg);
- }
+ this.createTask(msg) //
+ .subscribe(message -> logger.debug("handleDmaapMsg: {}", message), //
+ throwable -> logger.warn("handleDmaapMsg failure ", throwable), //
+ () -> logger.debug("handleDmaapMsg complete"));
}
Mono<String> createTask(String msg) {
DmaapRequestMessage dmaapRequestMessage = gson.fromJson(msg, ImmutableDmaapRequestMessage.class);
return this.invokePolicyAgent(dmaapRequestMessage) //
- .onErrorResume(t -> handleAgentCallError(t, dmaapRequestMessage)) //
- .flatMap(response -> sendDmaapResponse(response, dmaapRequestMessage, HttpStatus.OK));
+ .onErrorResume(t -> handleAgentCallError(t, msg, dmaapRequestMessage)) //
+ .flatMap(response -> sendDmaapResponse(response, dmaapRequestMessage, HttpStatus.OK));
} catch (Exception e) {
logger.warn("Received unparsable message from DMAAP: {}", msg);
}
}
- private Mono<String> handleAgentCallError(Throwable t, DmaapRequestMessage dmaapRequestMessage) {
- logger.debug("Agent call failed: " + t.getMessage());
- return sendDmaapResponse(t.toString(), dmaapRequestMessage, HttpStatus.NOT_FOUND) //
- .flatMap(s -> Mono.empty());
+ private Mono<String> handleAgentCallError(Throwable t, String origianalMessage,
+ DmaapRequestMessage dmaapRequestMessage) {
+ logger.debug("Agent call failed: {}", t.getMessage());
+ if (t instanceof ServiceException) {
+ String errorMessage = prepareBadOperationErrorMessage(t, origianalMessage);
+ return sendDmaapResponse(errorMessage, dmaapRequestMessage, HttpStatus.NOT_FOUND) //
+ .flatMap(notUsed -> Mono.empty());
+ } else {
+ return sendDmaapResponse(t.toString(), dmaapRequestMessage, HttpStatus.NOT_FOUND) //
+ .flatMap(notUsed -> Mono.empty());
+ }
+ }
+
+ private String prepareBadOperationErrorMessage(Throwable t, String origianalMessage) {
+ String badOperation = origianalMessage.substring(origianalMessage.indexOf("operation\":\"") + 12,
+ origianalMessage.indexOf(",\"url\":"));
+ String errorMessage = t.getMessage().replace("null", badOperation);
+ return errorMessage;
}
private Mono<String> invokePolicyAgent(DmaapRequestMessage dmaapRequestMessage) {
DmaapRequestMessage.Operation operation = dmaapRequestMessage.operation();
+ if (operation == null) {
+ return Mono.error(new ServiceException("Not implemented operation: " + operation));
+ }
Mono<String> result = null;
String uri = dmaapRequestMessage.url();
- if (operation == Operation.DELETE) {
- result = agentClient.delete(uri);
- } else if (operation == Operation.GET) {
- result = agentClient.get(uri);
- } else if (operation == Operation.PUT) {
- result = agentClient.put(uri, dmaapRequestMessage.payload());
- } else if (operation == Operation.POST) {
- result = agentClient.post(uri, dmaapRequestMessage.payload());
- } else {
- return Mono.error(new Exception("Not implemented operation: " + operation));
+ switch (operation) {
+ case DELETE:
+ result = agentClient.delete(uri);
+ break;
+ case GET:
+ result = agentClient.get(uri);
+ break;
+ case PUT:
+ result = agentClient.put(uri, payload(dmaapRequestMessage));
+ break;
+ case POST:
+ result = agentClient.post(uri, payload(dmaapRequestMessage));
+ break;
+ default:
+ // Nothing, can never get here.
}
return result;
}
+ private String payload(DmaapRequestMessage message) {
+ Optional<JsonObject> payload = message.payload();
+ if (payload.isPresent()) {
+ return gson.toJson(payload.get());
+ } else {
+ logger.warn("Expected payload in message from DMAAP: {}", message);
+ return "";
+ }
+ }
+
private Mono<String> sendDmaapResponse(String response, DmaapRequestMessage dmaapRequestMessage,
- HttpStatus status) {
+ HttpStatus status) {
return getDmaapResponseMessage(dmaapRequestMessage, response, status) //
- .flatMap(body -> sendToDmaap(body)) //
- .onErrorResume(t -> handleResponseCallError(t, dmaapRequestMessage));
+ .flatMap(this::sendToDmaap) //
+ .onErrorResume(this::handleResponseCallError);
}
private Mono<String> sendToDmaap(String body) {
}
}
- private Mono<String> handleResponseCallError(Throwable t, DmaapRequestMessage dmaapRequestMessage) {
- logger.debug("Failed to respond: " + t.getMessage());
+ private Mono<String> handleResponseCallError(Throwable t) {
+ logger.debug("Failed to send respons to DMaaP: {}", t.getMessage());
return Mono.empty();
}
private Mono<String> getDmaapResponseMessage(DmaapRequestMessage dmaapRequestMessage, String response,
- HttpStatus status) {
+ HttpStatus status) {
DmaapResponseMessage dmaapResponseMessage = ImmutableDmaapResponseMessage.builder() //
- .status(status.toString()) //
- .message(response) //
- .type("response") //
- .correlationId(dmaapRequestMessage.correlationId()) //
- .originatorId(dmaapRequestMessage.originatorId()) //
- .requestId(dmaapRequestMessage.requestId()) //
- .timestamp(dmaapRequestMessage.timestamp()) //
- .build();
+ .status(status.toString()) //
+ .message(response) //
+ .type("response") //
+ .correlationId(dmaapRequestMessage.correlationId()) //
+ .originatorId(dmaapRequestMessage.originatorId()) //
+ .requestId(dmaapRequestMessage.requestId()) //
+ .timestamp(dmaapRequestMessage.timestamp()) //
+ .build();
String str = gson.toJson(dmaapResponseMessage);
return Mono.just(str);
}
-
}