ExternalProcess

java.lang.Object
- flexagon.ff.common.core.externalprocess.ExternalProcess

public class ExternalProcess
extends java.lang.Object

Represents an external operating system process (e.g. a unix shell script or windows batch file). This class manages the configuration, execution, and output of such process, which are often time necessary within FlexDeploy plugin implementations.

For example,

      ExternalProcess p = new ExternalProcess(workDir, "/var/tmp/dowork.sh");
      p.setCaptureLogs(false);
      p.setWaitForProcess(true);
      p.setTimeout(5000L); // 5 secs
      p.addEnvironment("foo", "bar", false);
      p.execute();
      System.out.println(p.getReturnCode());

Constructor Summary

Constructors
Constructor and Description
`ExternalProcess()` Creates an external process
`ExternalProcess(java.io.File workdir)` Creates an external process
`ExternalProcess(java.io.File workdir, java.lang.String command)` Creates an external process

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`addEnvironment(java.util.List<EnvironmentKeyValue> environmentList)` Adds a list of environment variable for the external process.
`void`	`addEnvironment(java.lang.String key, java.lang.String value, boolean secure)` Adds an environment variable for the external process.
`void`	`addToDoNotPrintKeys(java.lang.String pKey)` Sets a specific environment variable not to print to the logs during execution.
`void`	`destroyProcess()` Destroys the external process after use, freeing up its resources.
`void`	`execute()` Executes the external process
`java.util.List<java.lang.String>`	`getCommands()` Returns the list of commands to execute for this external process.
`java.util.List<java.lang.String>`	`getPrintableCommands()` Returns the list of commands appropriate for printing.
`java.lang.Process`	`getProcess()` Returns the Process command which is encapsulated by this ExternalProcess command.
`java.util.List<java.lang.String>`	`getProcessError()` The trapped standard error logs as a List of Strings
`java.util.List<java.lang.String>`	`getProcessOutput()` The trapped standard out logs as a List of Strings
`int`	`getReturnCode()` Returns the return code from the external process execution.
`java.lang.Long`	`getTimeout()` Returns the configured timeout in milliseconds.
`java.io.File`	`getWorkDir()` Returns the working directory for the external process execution.
`boolean`	`isPrintCommand()` Returns whether to print the command during execution
`boolean`	`isPrintEnvVariables()` Returns whether to print environment variables during execution
`boolean`	`isPrintOutput()` If set to capture logs, and setPrintOutput(false), then the output is only stored in memory.
`static void`	`main(java.lang.String[] args)`
`void`	`setCaptureLogs(boolean pCaptureLogs)` Sets whether standard out and standard error logs from the process should be trapped.
`void`	`setCommands(java.util.List<java.lang.String> commands)` Sets the commands to execute for this external process.
`void`	`setPrintCommand(boolean pPrintCommand)` Sets whether the command should be printed in the logs during execution.
`void`	`setPrintEnvVariables(boolean pPrintEnvVariables)` Sets whether to print environment variables to the logs during execution.
`void`	`setPrintOutput(boolean pPrintOutput)` If set to capture logs, and setPrintOutput(false), then the output is only stored in memory.
`void`	`setSilentMode(boolean pSilentMode)` Completely suppress log messages.
`void`	`setThrowExceptionOnProcessFailure(boolean pThrowExceptionOnProcessFailure)` Sets whether a non-zero return code returned from an external process execution should result in an exception being thrown.
`void`	`setTimeout(java.lang.Long pTimeout)` Sets a timeout in milliseconds for the external process.
`void`	`setWaitForProcess(boolean pWaitForProcess)` Sets whether external process execution to wait for completion before returning.
`void`	`setWorkDir(java.io.File workDir)` Sets the working directory for the external process execution.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ExternalProcess
```
public ExternalProcess()
```
    Creates an external process
  - ExternalProcess
```
public ExternalProcess(java.io.File workdir)
```
    Creates an external process
    
    Parameters:
    
    workdir - the working directory
  - ExternalProcess
```
public ExternalProcess(java.io.File workdir,
                       java.lang.String command)
```
    Creates an external process
    
    Parameters:
    
    workdir - the working directory
    
    command - the command to execute
- Method Detail
  - setThrowExceptionOnProcessFailure
```
public void setThrowExceptionOnProcessFailure(boolean pThrowExceptionOnProcessFailure)
```
    Sets whether a non-zero return code returned from an external process execution should result in an exception being thrown.
    
    Parameters:
    
    pThrowExceptionOnProcessFailure - whether to throw an exception on failure
  - setTimeout
```
public void setTimeout(java.lang.Long pTimeout)
```
    Sets a timeout in milliseconds for the external process. If null or not specified, there is no timeout and execution will run indefinitely.
    
    Parameters:
    
    pTimeout - the timeout in milliseconds
  - getTimeout
```
public java.lang.Long getTimeout()
```
    Returns the configured timeout in milliseconds. If null, there is no configured timeout.
    
    Returns:
    
    the timeout in milliseconds
  - getWorkDir
```
public java.io.File getWorkDir()
```
    Returns the working directory for the external process execution.
    
    Returns:
    
    the working directory
  - setWorkDir
```
public void setWorkDir(java.io.File workDir)
```
    Sets the working directory for the external process execution. If null or not specified, the default is Java's system property "user.dir".
    
    Parameters:
    
    workDir - the working directory
  - getCommands
```
public java.util.List<java.lang.String> getCommands()
```
    Returns the list of commands to execute for this external process.
    
    Returns:
    
    the list of commands
  - setCommands
```
public void setCommands(java.util.List<java.lang.String> commands)
```
    Sets the commands to execute for this external process. The commands are made up of a single command and its arguments. For example, {"grep","-i","foo"}.
    
    Parameters:
    
    commands - the commands to execute
  - setWaitForProcess
```
public void setWaitForProcess(boolean pWaitForProcess)
```
    Sets whether external process execution to wait for completion before returning.
    
    Parameters:
    
    pWaitForProcess - whether to wait for process to complete
  - setCaptureLogs
```
public void setCaptureLogs(boolean pCaptureLogs)
```
    Sets whether standard out and standard error logs from the process should be trapped.
    
    Parameters:
    
    pCaptureLogs - whether to capture standard out and standard error logs
  - getProcess
```
public java.lang.Process getProcess()
```
    Returns the Process command which is encapsulated by this ExternalProcess command.
    
    Returns:
    
    the process object
  - getReturnCode
```
public int getReturnCode()
```
    Returns the return code from the external process execution.
    
    Returns:
    
    the return code
  - getProcessOutput
```
public java.util.List<java.lang.String> getProcessOutput()
```
    The trapped standard out logs as a List of Strings
    
    Returns:
    
    the standard out logs
  - getProcessError
```
public java.util.List<java.lang.String> getProcessError()
```
    The trapped standard error logs as a List of Strings
    
    Returns:
    
    the standard error logs
  - addEnvironment
```
public void addEnvironment(java.util.List<EnvironmentKeyValue> environmentList)
```
    Adds a list of environment variable for the external process.
    
    Parameters:
    
    environmentList - a list of environment variables
  - addEnvironment
```
public void addEnvironment(java.lang.String key,
                           java.lang.String value,
                           boolean secure)
```
    Adds an environment variable for the external process.
    
    Parameters:
    
    key - the environment variable key
    
    value - the environment variable value
    
    secure - whether the environment variable is secure
  - getPrintableCommands
```
public java.util.List<java.lang.String> getPrintableCommands()
```
    Returns the list of commands appropriate for printing. This method will obfuscate secure variables within the commands.
    
    Returns:
    
    the printable commands
  - execute
```
public void execute()
```
    Executes the external process
  - destroyProcess
```
public void destroyProcess()
```
    Destroys the external process after use, freeing up its resources.
  - setPrintEnvVariables
```
public void setPrintEnvVariables(boolean pPrintEnvVariables)
```
    Sets whether to print environment variables to the logs during execution. The default value is true.
    
    Parameters:
    
    pPrintEnvVariables - whether to print environment variables
  - isPrintEnvVariables
```
public boolean isPrintEnvVariables()
```
    Returns whether to print environment variables during execution
    
    Returns:
    
    true if environment variables should be printed; false otherwise
  - setPrintCommand
```
public void setPrintCommand(boolean pPrintCommand)
```
    Sets whether the command should be printed in the logs during execution. The default is true.
    
    Parameters:
    
    pPrintCommand -
  - isPrintCommand
```
public boolean isPrintCommand()
```
    Returns whether to print the command during execution
    
    Returns:
    
    true if the command should be printed; false otherwise
  - main
```
public static void main(java.lang.String[] args)
                 throws java.lang.Exception
```
    Throws:
    
    java.lang.Exception
  - addToDoNotPrintKeys
```
public void addToDoNotPrintKeys(java.lang.String pKey)
```
    Sets a specific environment variable not to print to the logs during execution.
    
    Parameters:
    
    pKey - the key of an environment variable
  - setPrintOutput
```
public void setPrintOutput(boolean pPrintOutput)
```
    If set to capture logs, and setPrintOutput(false), then the output is only stored in memory. If either or both capture logs or print output are true, it is printed the console. Defaults to true if unset, as was the original behavior. Usually, leave it as true.
    
    Parameters:
    
    pPrintOutput -
  - isPrintOutput
```
public boolean isPrintOutput()
```
    If set to capture logs, and setPrintOutput(false), then the output is only stored in memory. If either or both capture logs or print output are true, it is printed the console.
    
    Returns:
    
    true or false.
  - setSilentMode
```
public void setSilentMode(boolean pSilentMode)
```
    Completely suppress log messages.
    
    Parameters:
    
    pSilentMode -

Class ExternalProcess

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

ExternalProcess

ExternalProcess

ExternalProcess

Method Detail

setThrowExceptionOnProcessFailure

setTimeout

getTimeout

getWorkDir

setWorkDir

getCommands

setCommands

setWaitForProcess

setCaptureLogs

getProcess

getReturnCode

getProcessOutput

getProcessError

addEnvironment

addEnvironment

getPrintableCommands

execute

destroyProcess

setPrintEnvVariables

isPrintEnvVariables

setPrintCommand

isPrintCommand

main

addToDoNotPrintKeys

setPrintOutput

isPrintOutput

setSilentMode