| /** |
| * 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.ambari.server.bootstrap; |
| |
| import java.io.BufferedReader; |
| import java.io.File; |
| import java.io.FileReader; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.commons.io.FileUtils; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| /** |
| * Runnable class that gets the hoststatus output by looking at the files |
| * in a certain directory. Only meant to be useful for bootstrap as of now. |
| */ |
| class BSHostStatusCollector { |
| private File requestIdDir; |
| private List<BSHostStatus> hostStatus; |
| private static final String logFileFilter = ".log"; |
| private static final String doneFileFilter = ".done"; |
| private static Log LOG = LogFactory.getLog(BSHostStatusCollector.class); |
| |
| private List<String> hosts; |
| |
| public BSHostStatusCollector(File requestIdDir, List<String> hosts) { |
| this.requestIdDir = requestIdDir; |
| this.hosts = hosts; |
| } |
| |
| public List<BSHostStatus> getHostStatus() { |
| return hostStatus; |
| } |
| |
| public void run() { |
| LOG.info("Request directory " + requestIdDir); |
| hostStatus = new ArrayList<BSHostStatus>(); |
| if (hosts == null) { |
| return; |
| } |
| File done; |
| File log; |
| LOG.info("HostList for polling on " + hosts); |
| for (String host : hosts) { |
| /* Read through the files and gather output */ |
| BSHostStatus status = new BSHostStatus(); |
| status.setHostName(host); |
| done = new File(requestIdDir, host + doneFileFilter); |
| log = new File(requestIdDir, host + logFileFilter); |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("Polling bootstrap status for host" |
| + ", requestDir=" + requestIdDir |
| + ", host=" + host |
| + ", doneFileExists=" + done.exists() |
| + ", logFileExists=" + log.exists()); |
| } |
| if (!done.exists()) { |
| status.setStatus("RUNNING"); |
| } else { |
| status.setStatus("FAILED"); |
| try { |
| String statusCode = FileUtils.readFileToString(done).trim(); |
| if (statusCode.equals("0")) { |
| status.setStatus("DONE"); |
| } |
| |
| updateStatus(status, statusCode); |
| } catch (IOException e) { |
| LOG.info("Error reading done file " + done); |
| } |
| } |
| if (!log.exists()) { |
| status.setLog(""); |
| } else { |
| String logString = ""; |
| BufferedReader reader = null; |
| try { |
| StringBuilder sb = new StringBuilder(); |
| reader = new BufferedReader(new FileReader(log)); |
| |
| String line = null; |
| while (null != (line = reader.readLine())) { |
| if (line.startsWith("tcgetattr:") || line.startsWith("tput:")) |
| continue; |
| |
| if (0 != sb.length() || 0 == line.length()) |
| sb.append('\n'); |
| |
| if (-1 != line.indexOf ("\\n")) |
| sb.append(line.replace("\\n", "\n")); |
| else |
| sb.append(line); |
| } |
| |
| logString = sb.toString(); |
| } catch (IOException e) { |
| LOG.info("Error reading log file " + log); |
| } |
| finally { |
| try { |
| reader.close(); |
| } |
| catch (Exception e) { |
| } |
| } |
| status.setLog(logString); |
| } |
| hostStatus.add(status); |
| } |
| } |
| |
| private void updateStatus(BSHostStatus status, String statusCode) { |
| |
| status.setStatusCode(statusCode); |
| |
| int reason = -1; |
| try { |
| reason = Integer.parseInt(statusCode); |
| } catch (Exception e) { |
| } |
| |
| switch (reason) { |
| // case X: (as we find them) |
| case 2: |
| status.setStatusAction("Processing could not continue because the file was not found."); |
| break; |
| case 255: |
| default: |
| if (null != status.getLog()) { |
| String lowerLog = status.getLog().toLowerCase(); |
| if (-1 != lowerLog.indexOf("permission denied") && -1 != lowerLog.indexOf("publickey")) { |
| status.setStatusAction("Use correct SSH key"); |
| } else if (-1 != lowerLog.indexOf("connect to host")) { |
| status.setStatusAction("Please verify that the hostname '" + status.getHostName() + "' is correct."); |
| } |
| } |
| break; |
| } |
| |
| } |
| } |