The standard execution of a run action goes through the following steps:
The user selects a run configuration (for example, by choosing one from the run configurations combobox) and an executor (for example, by pressing a toolbar button created by the executor).
The program runner that will actually execute the process is selected by polling all registered program runners and asking whether they can run the specified run profile with the specified executor ID.
ProgramRunner.execute()is called, receiving the executor and the execution environment.
ProgramRunner.execute() go through the following steps to execute the process:
RunProfile.getState()method is called to create a
RunProfileStateobject, describing a process about to be started. At this stage, the command line parameters, environment variables, and other information required to start the process are initialized.
RunProfileState.execute()is called. It starts the process, attaches a
ProcessHandlerto its input and output streams, creates a console to display the process output, and returns an
ExecutionResultobject aggregating the console and the process handler.
RunContentBuilderobject is created and invoked to display the execution console in a tab of the Run or Debug tool window.
Executor interface describes a specific way of executing any possible run configuration.
The three default executors provided by the IntelliJ Platform by default are Run, Debug, and Run with Coverage. Each executor gets its own toolbar button, which starts the selected run configuration using this executor, and its own context menu item for starting a configuration using this executor.
As a plugin developer, you usually don't need to implement the
Executor interface. However, it can be useful, for example, if you're implementing a profiler integration and want to provide the possibility to execute any configuration with profiling.
Running a Process
RunProfileState interface comes up in every run configuration implementation as the return value
RunProfile.getState(). It describes a process that is ready to be started and holds information like the command line, current working directory, and environment variables for the process to be started. (The existence of
RunProfileState as a separate step in the execution flow allows run configuration extensions and other components to patch the configuration and modify the parameters before it gets executed.)
The standard base class used as implementation of
CommandLineState. It contains the logic for putting together a running process and a console into an
ExecutionResult, but doesn't know anything how the process is actually started. For starting the process, it's best to use the
GeneralCommandLine class, which takes care of setting up the command line parameters and executing the process.
Alternatively, if the process you need to run is a JVM-based one, you can use the
JavaCommandLineState base class. It knows about the JVM command line parameters and can take care of details like calculating the classpath for the JVM.
To monitor the execution of a process and capture its output, the
OSProcessHandler class is usually used. Once you've created an instance of
OSProcessHandler from either a command line or a Process object, you need to call the
startNotify() method to capture its output. You may also want to attach a
ProcessTerminatedListener to the
OSProcessHandler so that the exit status of the process will be displayed in the console.
Displaying Process Output
If you're using
CommandLineState, a console view will be automatically created and attached to the process's output. Alternatively, you can arrange this yourself:
ConsoleView.attachToProcess()attaches it to the output of a process.
If the running process uses ANSI escape codes to color its output, the
ColoredProcessHandler class will parse it and display the colors in the IntelliJ console.
Console filters allow you to convert certain strings found in the process output to clickable hyperlinks. To attach a filter to the console, use
CommandLineState.addConsoleFilters() or, if you're creating a console manually,
Starting a Run Configuration from Code
If you have an existing run configuration that you need to execute, the easiest way to do so is to use
ProgramRunnerUtil.executeConfiguration(). The method takes a
RunnerAndConfigurationSettings, as well as an
Executor. To get the
RunnerAndConfigurationSettings for an existing configuration, you can use, for example,
RunManager.getConfigurationSettings(ConfigurationType). As the last parameter, you normally pass either