/components/camel-jira/src/main/java/org/apache/camel/component/jira/consumer/NewIssueConsumer.java
Java | 82 lines | 42 code | 11 blank | 29 comment | 4 complexity | be6ba799c25051af427a52491de62f93 MD5 | raw file
- /**
- * 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.jira.consumer;
- import java.util.List;
- import java.util.Stack;
- import com.atlassian.jira.rest.client.domain.BasicIssue;
- import org.apache.camel.Exchange;
- import org.apache.camel.Processor;
- import org.apache.camel.component.jira.JIRAEndpoint;
- /**
- * Consumes new JIRA issues.
- *
- * NOTE: We manually add "ORDER BY key desc" to the JQL in order to optimize startup (the latest issues one at a time),
- * rather than having to index everything.
- */
- public class NewIssueConsumer extends AbstractJIRAConsumer {
- private final String jql;
- private long latestIssueId = -1;
- public NewIssueConsumer(JIRAEndpoint endpoint, Processor processor) {
- super(endpoint, processor);
- jql = endpoint.getJql() + " ORDER BY key desc";
- // grab only the top
- List<BasicIssue> issues = getIssues(jql, 0, 1, 1);
- // in case there aren't any issues...
- if (issues.size() >= 1) {
- latestIssueId = issues.get(0).getId();
- }
- }
- @Override
- protected int poll() throws Exception {
- Stack<BasicIssue> newIssues = new Stack<>();
- getNewIssues(0, newIssues);
- while (!newIssues.empty()) {
- BasicIssue newIssue = newIssues.pop();
- Exchange e = getEndpoint().createExchange();
- e.getIn().setBody(newIssue);
- getProcessor().process(e);
- }
- return newIssues.size();
- }
- // In the end, we want *new* issues oldest to newest.
- private void getNewIssues(int start, Stack<BasicIssue> stack) {
- // grab only the top
- List<BasicIssue> issues = getIssues(jql, start, 1, 1);
- // in case there aren't any issues...
- if (issues.size() >= 1) {
- long id = issues.get(0).getId();
- if (id > latestIssueId) {
- stack.push(issues.get(0));
- // try again in case multiple new issues exist
- getNewIssues(start + 1, stack);
- // make sure this happens now, rather than before calling #getNewIssues
- latestIssueId = id;
- }
- }
- }
- }