/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.camel.component.yammer.scribe;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.scribe.exceptions.OAuthException;
import org.scribe.extractors.AccessTokenExtractor;
import org.scribe.model.Token;
import org.scribe.utils.Preconditions;
public class JsonTokenExtractor implements AccessTokenExtractor {
private Pattern accessTokenPattern;
public JsonTokenExtractor() {
accessTokenPattern = Pattern.compile("\"access_token\":\\s*\"(\\S*?)\"");
}
public JsonTokenExtractor(String tokenRegex) {
accessTokenPattern = Pattern.compile(tokenRegex);
}
public Token extract(String response) {
Preconditions.checkEmptyString(response, "Cannot extract a token from a null or empty String");
Matcher matcher = accessTokenPattern.matcher(response);
if (matcher.find()) {
return new Token(matcher.group(1), "", response);
} else {
throw new OAuthException("Cannot extract an acces token. Response was: " + response);
}
}
}