@Override
protected void render(Block html) {
ContainerId containerId = verifyAndGetContainerId(html);
NodeId nodeId = verifyAndGetNodeId(html);
String appOwner = verifyAndGetAppOwner(html);
if (containerId == null || nodeId == null || appOwner == null
|| appOwner.isEmpty()) {
return;
}
ApplicationId applicationId =
containerId.getApplicationAttemptId().getApplicationId();
String logEntity = $(ENTITY_STRING);
if (logEntity == null || logEntity.isEmpty()) {
logEntity = containerId.toString();
}
if (!conf.getBoolean(YarnConfiguration.NM_LOG_AGGREGATION_ENABLED,
YarnConfiguration.DEFAULT_NM_LOG_AGGREGATION_ENABLED)) {
html.h1()
._("Aggregation is not enabled. Try the nodemanager at " + nodeId)
._();
return;
}
Path remoteRootLogDir =
new Path(conf.get(YarnConfiguration.NM_REMOTE_APP_LOG_DIR,
YarnConfiguration.DEFAULT_NM_REMOTE_APP_LOG_DIR));
AggregatedLogFormat.LogReader reader = null;
try {
reader =
new AggregatedLogFormat.LogReader(conf,
LogAggregationUtils.getRemoteNodeLogFileForApp(
remoteRootLogDir, applicationId, appOwner, nodeId,
LogAggregationUtils.getRemoteNodeLogDirSuffix(conf)));
} catch (FileNotFoundException e) {
// ACLs not available till the log file is opened.
html.h1()
._("Logs not available for "
+ logEntity
+ ". Aggregation may not be complete, "
+ "Check back later or try the nodemanager at "
+ nodeId)._();
return;
} catch (IOException e) {
html.h1()._("Error getting logs for " + logEntity)._();
LOG.error("Error getting logs for " + logEntity, e);
return;
}
String owner = null;
Map<ApplicationAccessType, String> appAcls = null;
try {
owner = reader.getApplicationOwner();
appAcls = reader.getApplicationAcls();
} catch (IOException e) {
html.h1()._("Error getting logs for " + logEntity)._();
LOG.error("Error getting logs for " + logEntity, e);
return;
}
ApplicationACLsManager aclsManager = new ApplicationACLsManager(conf);
aclsManager.addApplication(applicationId, appAcls);
String remoteUser = request().getRemoteUser();
UserGroupInformation callerUGI = null;
if (remoteUser != null) {
callerUGI = UserGroupInformation.createRemoteUser(remoteUser);
}
if (callerUGI != null
&& !aclsManager.checkAccess(callerUGI, ApplicationAccessType.VIEW_APP,
owner, applicationId)) {
html.h1()
._("User [" + remoteUser
+ "] is not authorized to view the logs for " + logEntity)._();
return;
}
DataInputStream valueStream;
LogKey key = new LogKey();
try {
valueStream = reader.next(key);
while (valueStream != null
&& !key.toString().equals(containerId.toString())) {
valueStream = reader.next(key);
}
if (valueStream == null) {
html.h1()._(
"Logs not available for " + logEntity
+ ". Could be caused by the rentention policy")._();
return;
}
writer().write("<pre>");
AggregatedLogFormat.LogReader.readAcontainerLogs(valueStream, writer());
writer().write("</pre>");
return;
} catch (IOException e) {
html.h1()._("Error getting logs for " + logEntity)._();
LOG.error("Error getting logs for " + logEntity, e);
return;
}
}
