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/*
* Copyright 2019 Adobe
* All Rights Reserved.
*
* NOTICE: Adobe permits you to use, modify, and distribute this file in
* accordance with the terms of the Adobe license agreement accompanying
* it. If you have received this file from a source other than Adobe,
* then your use, modification, or distribution of it requires the prior
* written permission of Adobe.
*/
package com.adobe.platform.operation.internal.api;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.TimeUnit;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.adobe.platform.operation.exception.SdkException;
import com.adobe.platform.operation.internal.ExtensionMediaTypeMapping;
import com.adobe.platform.operation.internal.FileRefImpl;
import com.adobe.platform.operation.internal.InternalExecutionContext;
import com.adobe.platform.operation.internal.cpf.dto.request.platform.CPFContentAnalyzerRequests;
import com.adobe.platform.operation.internal.http.DefaultRequestHeaders;
import com.adobe.platform.operation.internal.util.ValidationUtil;
import com.adobe.platform.operation.internal.cpf.constants.RequestKey;
import com.adobe.platform.operation.internal.exception.OperationException;
import com.adobe.platform.operation.internal.http.BaseHttpRequest;
import com.adobe.platform.operation.internal.http.ByteArrayPart;
import com.adobe.platform.operation.internal.http.HttpClient;
import com.adobe.platform.operation.internal.http.HttpClientFactory;
import com.adobe.platform.operation.internal.http.HttpResponse;
import com.adobe.platform.operation.internal.http.MultiPartRequest;
import com.adobe.platform.operation.internal.http.StringBodyPart;
import com.adobe.platform.operation.internal.util.ByteArrayUtil;
import com.adobe.platform.operation.internal.cpf.dto.request.ContentAnalyzerRequests;
public class CPFApi {
private static final Logger LOGGER = LoggerFactory.getLogger(CPFApi.class);
private static final String CONTENT_ANALYZER_REQUESTS_STRING = "contentAnalyzerRequests";
private static final long TIME_LIMIT_MS = 1000 * 60 * 10; // 10 minutes in ms
private static final int ACCEPTED_SUCCESS_STATUS_CODE = 202;
// Job Polling config
private static final long POLLING_INTERVAL = 1000; // in milliseconds
private static final long DELAY_POLLING_INTERVAL = 1000; // in milliseconds
public static HttpResponse cpfPredictApi(InternalExecutionContext context,
ContentAnalyzerRequests contentAnalyzerRequests,
List sourceFileRefList,
Class responseType,
String operation) throws FileNotFoundException {
try {
HttpClient httpClient = HttpClientFactory.getDefaultHttpClient();
MultiPartRequest multipartRequest
= (MultiPartRequest) context.getBaseRequestFromRequestContext(RequestKey.PREDICT);
// Prepare the multipart request
prepareMultiPartRequest(multipartRequest, contentAnalyzerRequests, sourceFileRefList, operation);
return httpClient.send(multipartRequest, responseType);
} catch (FileNotFoundException fe){
// Mandatory to catch and throw FileNotFoundException, since we wrap other IOException cases in a runtime exception
throw fe;
} catch (IOException io) {
throw new SdkException("Unexpected error while uploading file", io);
}
}
public static HttpResponse cpfCreateOpsApi(InternalExecutionContext context,
CPFContentAnalyzerRequests CPFContentAnalyzerRequests,
List sourceFileRefList,
Class responseType,
String operation) throws FileNotFoundException {
try {
HttpClient httpClient = HttpClientFactory.getDefaultHttpClient();
MultiPartRequest multipartRequest
= (MultiPartRequest) context.getBaseRequestFromRequestContext(RequestKey.CREATE);
// Prepare the multipart request
prepareMultiPartRequest(multipartRequest, CPFContentAnalyzerRequests, sourceFileRefList, operation);
return httpClient.send(multipartRequest, responseType);
} catch (FileNotFoundException fe){
// Mandatory to catch and throw FileNotFoundException, since we wrap other IOException cases in a runtime exception
throw fe;
} catch (IOException io) {
throw new SdkException("Unexpected error while uploading file", io);
}
}
public static HttpResponse cpfStatusApi(InternalExecutionContext context,
String location,
Class responseType) {
BaseHttpRequest baseHttpRequest = (BaseHttpRequest) context.getBaseRequestFromRequestContext(RequestKey.STATUS);
baseHttpRequest.withTemplate(location);
HttpClient httpClient = HttpClientFactory.getDefaultHttpClient();
HttpResponse response =
httpClient.send(baseHttpRequest, responseType);
// Time bound polling
long startTimeMs = System.currentTimeMillis();
int count = 1;
while (response.getStatusCode() == ACCEPTED_SUCCESS_STATUS_CODE) {
LOGGER.debug("Polling for status ");
long retryIntervalMs = (count > 5) ? DELAY_POLLING_INTERVAL : POLLING_INTERVAL;
if (System.currentTimeMillis() - startTimeMs > TIME_LIMIT_MS) {
LOGGER.debug("Polling Timeout reached. Something's wrong, file operation took too long");
throw new OperationException("Operation execution has timed out!");
} else {
// Keep polling
try {
TimeUnit.MILLISECONDS.sleep(retryIntervalMs);
} catch (InterruptedException ex) {
throw new SdkException("Thread interrupted while waiting for operation execution status!!", ex);
}
response = httpClient.send(baseHttpRequest, responseType);
count++;
}
}
return response;
}
/**
* This private method prepares the string body part and byte array body parts for a given multipart request; It also
* sets x-dcsdk-ops-info header value to the specified operation name, for the multipart request.
* @param multipartRequest The multipart request
* @param contentAnalyzerRequests The object for string body part
* @param sourceFileRefList The list of sources for byte array body parts
* @param operation The operation name
* @throws IOException If source file(s) not found
*/
private static void prepareMultiPartRequest(MultiPartRequest multipartRequest,
T contentAnalyzerRequests,
List sourceFileRefList,
String operation) throws IOException {
// Prepare the string body part of the multipart request
ObjectMapper objectMapper = new ObjectMapper();
String contentAnalyzerRequestsString = objectMapper.writeValueAsString(contentAnalyzerRequests);
StringBodyPart stringBodyPart = new StringBodyPart(CONTENT_ANALYZER_REQUESTS_STRING,
contentAnalyzerRequestsString, ExtensionMediaTypeMapping.TXT.getMediaType());
multipartRequest = multipartRequest.withStringBodyPart(stringBodyPart);
// Prepare the byte array body part(s) of the multipart request
// partNumber is required in case when the request may have multiple byte array parts i.e. multiple file uploads
int partNumber = 1;
for (FileRefImpl fileRef : sourceFileRefList) {
ByteArrayPart byteArrayPart = ByteArrayUtil.createByteArrayPart(fileRef, partNumber);
multipartRequest.withByteArrayPart(byteArrayPart);
partNumber++;
}
// Set x-dcsdk-ops-info header
multipartRequest.withHeader(DefaultRequestHeaders.X_DCSDK_OPS_INFO_HEADER_NAME, operation);
// Validate whether multipartRequest body size exceeds the specified limit
ValidationUtil.validateMultiPartBodySize(multipartRequest);
}
}
