alluxio.cli.bundler.command

Class CollectMetricsCommand

java.lang.Object

alluxio.cli.bundler.command.AbstractCollectInfoCommand

alluxio.cli.bundler.command.CollectMetricsCommand

All Implemented Interfaces:

Command, Closeable, AutoCloseable

public class CollectMetricsCommand
extends AbstractCollectInfoCommand

Command to probe Alluxio metrics for a few times.

Field Summary

Fields

Modifier and Type	Field and Description
static String	COMMAND_NAME
static org.apache.commons.cli.Options	OPTIONS

Fields inherited from class alluxio.cli.bundler.command.AbstractCollectInfoCommand

mFsContext, mWorkingDirPath

Constructor Summary

Constructors

Constructor and Description
CollectMetricsCommand(FileSystemContext fsContext) Creates a new instance of CollectMetricsCommand.

Method Summary

Modifier and Type	Method and Description
String	getCommandName() Gets the command name as input from the shell.
String	getDescription()
static String	getMetricsJson(String url) Probes Alluxio metrics json sink.
String	getUsage()
static String	masterMetrics(FileSystemContext fsContext) Get master metrics.
int	run(org.apache.commons.cli.CommandLine cl) Runs the command.
static List<String>	workerMetrics(FileSystemContext fsContext) Get metrics from each worker.

Methods inherited from class alluxio.cli.bundler.command.AbstractCollectInfoCommand

generateOutputFile, getWorkingDirectory, validateArgs

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface alluxio.cli.Command

close, getOptions, getSubCommands, hasSubCommand, parseAndValidateArgs

Field Detail

COMMAND_NAME

public static final String COMMAND_NAME

See Also:

Constant Field Values

OPTIONS

public static final org.apache.commons.cli.Options OPTIONS

Constructor Detail

CollectMetricsCommand

public CollectMetricsCommand(FileSystemContext fsContext)

Creates a new instance of CollectMetricsCommand.

Parameters:

fsContext - the FileSystemContext to execute in

Method Detail

getCommandName

public String getCommandName()

Description copied from interface: Command

Gets the command name as input from the shell.

Returns:

the command name

run

public int run(org.apache.commons.cli.CommandLine cl)
        throws AlluxioException,
               IOException

Description copied from interface: Command

Runs the command.

Parameters:

cl - the parsed command line for the arguments

Returns:

the result of running the command

Throws:

AlluxioException

IOException

getUsage

public String getUsage()

Returns:

the usage information of the command

getDescription

public String getDescription()

Returns:

the description information of the command

masterMetrics

public static String masterMetrics(FileSystemContext fsContext)

Get master metrics.

Parameters:

fsContext - for connecting to master

Returns:

the string of master metrics in JSON format

workerMetrics

public static List<String> workerMetrics(FileSystemContext fsContext)
                                  throws IOException

Get metrics from each worker.

Parameters:

fsContext - for connecting to master

Returns:

a list of worker metrics in JSON format

Throws:

IOException

getMetricsJson

public static String getMetricsJson(String url)
                             throws IOException

Probes Alluxio metrics json sink. If the HTTP request fails, return the error content instead of throwing an exception.

Parameters:

url - URL that serves Alluxio metrics

Returns:

HTTP response in JSON string

Throws:

IOException