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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.documentapi.local;
import com.yahoo.document.Document;
import com.yahoo.document.DocumentId;
import com.yahoo.document.DocumentPut;
import com.yahoo.document.DocumentRemove;
import com.yahoo.document.DocumentUpdate;
import com.yahoo.documentapi.AsyncParameters;
import com.yahoo.documentapi.AsyncSession;
import com.yahoo.documentapi.DocumentIdResponse;
import com.yahoo.documentapi.DocumentResponse;
import com.yahoo.documentapi.DocumentUpdateResponse;
import com.yahoo.documentapi.RemoveResponse;
import com.yahoo.documentapi.Response;
import com.yahoo.documentapi.ResponseHandler;
import com.yahoo.documentapi.Result;
import com.yahoo.documentapi.SyncParameters;
import com.yahoo.documentapi.SyncSession;
import com.yahoo.documentapi.UpdateResponse;
import com.yahoo.documentapi.messagebus.protocol.DocumentProtocol;
import java.util.LinkedList;
import java.util.List;
import java.util.Random;
/**
* @author bratseth
*/
public class LocalAsyncSession implements AsyncSession {
private final List<Response> responses = new LinkedList<>();
private final ResponseHandler handler;
private final SyncSession syncSession;
private long requestId = 0;
private Random random = new Random();
private synchronized long getNextRequestId() {
requestId++;
return requestId;
}
public LocalAsyncSession(AsyncParameters params, LocalDocumentAccess access) {
this.handler = params.getResponseHandler();
random.setSeed(System.currentTimeMillis());
syncSession = access.createSyncSession(new SyncParameters.Builder().build());
}
@Override
public double getCurrentWindowSize() {
return 1000;
}
@Override
public Result put(Document document) {
return put(document, DocumentProtocol.Priority.NORMAL_3);
}
@Override
public Result put(Document document, DocumentProtocol.Priority pri) {
long req = getNextRequestId();
try {
syncSession.put(new DocumentPut(document), pri);
addResponse(new DocumentResponse(req));
} catch (Exception e) {
addResponse(new DocumentResponse(req, document, e.getMessage(), false));
}
return new Result(req);
}
@Override
public Result get(DocumentId id) {
return get(id, false, DocumentProtocol.Priority.NORMAL_3);
}
@Override
public Result get(DocumentId id, boolean headersOnly, DocumentProtocol.Priority pri) {
long req = getNextRequestId();
try {
addResponse(new DocumentResponse(req, syncSession.get(id)));
} catch (Exception e) {
addResponse(new DocumentResponse(req, e.getMessage(), false));
}
return new Result(req);
}
@Override
public Result remove(DocumentId id) {
return remove(id, DocumentProtocol.Priority.NORMAL_3);
}
@Override
public Result remove(DocumentId id, DocumentProtocol.Priority pri) {
long req = getNextRequestId();
if (syncSession.remove(new DocumentRemove(id), pri)) {
addResponse(new RemoveResponse(req, true));
} else {
addResponse(new DocumentIdResponse(req, id, "Document not found.", false));
}
return new Result(req);
}
@Override
public Result update(DocumentUpdate update) {
return update(update, DocumentProtocol.Priority.NORMAL_3);
}
@Override
public Result update(DocumentUpdate update, DocumentProtocol.Priority pri) {
long req = getNextRequestId();
if (syncSession.update(update, pri)) {
addResponse(new UpdateResponse(req, true));
} else {
addResponse(new DocumentUpdateResponse(req, update, "Document not found.", false));
}
return new Result(req);
}
@Override
public Response getNext() {
if (responses.isEmpty()) {
return null;
}
int index = random.nextInt(responses.size());
return responses.remove(index);
}
@Override
public Response getNext(int timeout) {
return getNext();
}
@Override
public void destroy() {
// empty
}
private void addResponse(Response response) {
if (handler != null) {
handler.handleResponse(response);
} else {
responses.add(response);
}
}
}
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