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/*
* Copyright 2018, OpenCensus Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.opencensus.contrib.http.util;
import io.opencensus.common.ExperimentalApi;
import io.opencensus.trace.Status;
import javax.annotation.Nullable;
/**
* A helper class to provide convenience methods for tracing.
*
* @since 0.18
*/
@ExperimentalApi
public final class HttpTraceUtil {
private static final Status STATUS_100 = Status.UNKNOWN.withDescription("Continue");
private static final Status STATUS_101 = Status.UNKNOWN.withDescription("Switching Protocols");
private static final Status STATUS_402 = Status.UNKNOWN.withDescription("Payment Required");
private static final Status STATUS_405 = Status.UNKNOWN.withDescription("Method Not Allowed");
private static final Status STATUS_406 = Status.UNKNOWN.withDescription("Not Acceptable");
private static final Status STATUS_407 =
Status.UNKNOWN.withDescription("Proxy Authentication Required");
private static final Status STATUS_408 = Status.UNKNOWN.withDescription("Request Time-out");
private static final Status STATUS_409 = Status.UNKNOWN.withDescription("Conflict");
private static final Status STATUS_410 = Status.UNKNOWN.withDescription("Gone");
private static final Status STATUS_411 = Status.UNKNOWN.withDescription("Length Required");
private static final Status STATUS_412 = Status.UNKNOWN.withDescription("Precondition Failed");
private static final Status STATUS_413 =
Status.UNKNOWN.withDescription("Request Entity Too Large");
private static final Status STATUS_414 = Status.UNKNOWN.withDescription("Request-URI Too Large");
private static final Status STATUS_415 = Status.UNKNOWN.withDescription("Unsupported Media Type");
private static final Status STATUS_416 =
Status.UNKNOWN.withDescription("Requested range not satisfiable");
private static final Status STATUS_417 = Status.UNKNOWN.withDescription("Expectation Failed");
private static final Status STATUS_500 = Status.UNKNOWN.withDescription("Internal Server Error");
private static final Status STATUS_502 = Status.UNKNOWN.withDescription("Bad Gateway");
private static final Status STATUS_505 =
Status.UNKNOWN.withDescription("HTTP Version not supported");
private HttpTraceUtil() {}
/**
* Parse OpenCensus Status from HTTP response status code.
*
* This method serves a default routine to map HTTP status code to Open Census Status. The
* mapping is defined in Google API
* canonical error code, and the behavior is defined in OpenCensus
* Specs.
*
* @param statusCode the HTTP response status code. {@code 0} means invalid response.
* @param error the error occurred during response transmission (optional).
* @return the corresponding OpenCensus {@code Status}.
* @since 0.18
*/
public static final Status parseResponseStatus(int statusCode, @Nullable Throwable error) {
String message = null;
if (error != null) {
message = error.getMessage();
if (message == null) {
message = error.getClass().getSimpleName();
}
}
// set status according to response
if (statusCode == 0) {
return Status.UNKNOWN.withDescription(message);
} else {
if (statusCode >= 200 && statusCode < 400) {
return Status.OK;
} else {
// error code, try parse it
switch (statusCode) {
case 100:
return STATUS_100;
case 101:
return STATUS_101;
case 400:
return Status.INVALID_ARGUMENT.withDescription(message);
case 401:
return Status.UNAUTHENTICATED.withDescription(message);
case 402:
return STATUS_402;
case 403:
return Status.PERMISSION_DENIED.withDescription(message);
case 404:
return Status.NOT_FOUND.withDescription(message);
case 405:
return STATUS_405;
case 406:
return STATUS_406;
case 407:
return STATUS_407;
case 408:
return STATUS_408;
case 409:
return STATUS_409;
case 410:
return STATUS_410;
case 411:
return STATUS_411;
case 412:
return STATUS_412;
case 413:
return STATUS_413;
case 414:
return STATUS_414;
case 415:
return STATUS_415;
case 416:
return STATUS_416;
case 417:
return STATUS_417;
case 429:
return Status.RESOURCE_EXHAUSTED.withDescription(message);
case 500:
return STATUS_500;
case 501:
return Status.UNIMPLEMENTED.withDescription(message);
case 502:
return STATUS_502;
case 503:
return Status.UNAVAILABLE.withDescription(message);
case 504:
return Status.DEADLINE_EXCEEDED.withDescription(message);
case 505:
return STATUS_505;
default:
return Status.UNKNOWN.withDescription(message);
}
}
}
}
}