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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.vespa.http.client.core.operationProcessor;
import com.yahoo.vespa.http.client.Result;
import com.yahoo.vespa.http.client.config.Endpoint;
import com.yahoo.vespa.http.client.core.EndpointResult;
import com.yahoo.vespa.http.client.core.OperationStatus;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.logging.Logger;
/**
* @author Einar M R Rosenvinge
*/
public final class EndPointResultFactory {
private static Logger log = Logger.getLogger(EndPointResultFactory.class.getName());
private static final String EMPTY_MESSAGE = "-";
public static Collection<EndpointResult> createResult(
Endpoint endpoint, InputStream inputStream) throws IOException {
List<EndpointResult> results = new ArrayList<>();
try (BufferedReader reader = new BufferedReader(
new InputStreamReader(inputStream, StandardCharsets.US_ASCII))) {
String line;
while ((line = reader.readLine()) != null) {
results.add(parseResult(line, endpoint));
}
}
return results;
}
public static EndpointResult createError(
Endpoint endpoint, String operationId, Exception exception) {
return new EndpointResult(operationId, new Result.Detail(
endpoint, Result.ResultType.FATAL_ERROR, null, exception));
}
public static EndpointResult createTransientError(
Endpoint endpoint, String operationId, Exception exception) {
return new EndpointResult(operationId, new Result.Detail(
endpoint, Result.ResultType.TRANSITIVE_ERROR, null, exception));
}
private static Result.ResultType replyToResultType(OperationStatus reply) {
final Result.ResultType resultType;
// The ordering below is important, e.g. if success, it is never a transient error even if isTransient is true.
if (reply.errorCode.isSuccess()) {
return Result.ResultType.OPERATION_EXECUTED;
}
if (reply.isConditionNotMet) {
return Result.ResultType.CONDITION_NOT_MET;
}
if (reply.errorCode.isTransient()) {
return Result.ResultType.TRANSITIVE_ERROR;
}
return Result.ResultType.FATAL_ERROR;
}
private static EndpointResult parseResult(String line, Endpoint endpoint) {
try {
OperationStatus reply = OperationStatus.parse(line);
String message;
if (EMPTY_MESSAGE.equals(reply.message)) {
message = null;
} else {
message = reply.message;
}
Exception exception = null;
if (!reply.errorCode.isSuccess() && message != null) {
exception = new RuntimeException(message);
}
if (reply.traceMessage != null && !reply.traceMessage.isEmpty()) {
log.fine("Got trace message: " + reply.traceMessage);
}
return new EndpointResult(
reply.operationId,
new Result.Detail(endpoint,
replyToResultType(reply),
reply.traceMessage,
exception));
} catch (Throwable t) {
throw new IllegalArgumentException("Bad result line from server: '" + line + "'", t);
}
}
}
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