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60 lines
2 KiB
Java
60 lines
2 KiB
Java
// Copyright 2016 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package com.google.domain.registry.util;
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import static com.google.common.base.Preconditions.checkNotNull;
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import static java.nio.charset.StandardCharsets.UTF_8;
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import com.google.appengine.api.urlfetch.HTTPHeader;
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import com.google.appengine.api.urlfetch.HTTPRequest;
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import com.google.appengine.api.urlfetch.HTTPResponse;
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/**
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* Exception for when App Engine HTTP requests return a bad response.
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*
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* <p>This class displays lots of helpful troubleshooting information.
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*/
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public class UrlFetchException extends RuntimeException {
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private final HTTPRequest req;
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private final HTTPResponse rsp;
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public UrlFetchException(String message, HTTPRequest req, HTTPResponse rsp) {
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super(message);
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this.req = checkNotNull(req, "req");
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this.rsp = checkNotNull(rsp, "rsp");
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}
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@Override
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public String toString() {
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StringBuilder res = new StringBuilder(2048 + rsp.getContent().length).append(String.format(
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"%s: %s (HTTP Status %d)\nX-Fetch-URL: %s\nX-Final-URL: %s\n",
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getClass().getSimpleName(),
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getMessage(),
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rsp.getResponseCode(),
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req.getURL().toString(),
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rsp.getFinalUrl()));
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for (HTTPHeader header : rsp.getHeadersUncombined()) {
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res.append(header.getName());
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res.append(": ");
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res.append(header.getValue());
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res.append('\n');
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}
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res.append(">>>\n");
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res.append(new String(rsp.getContent(), UTF_8));
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res.append("\n<<<");
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return res.toString();
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}
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}
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