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A packaging of the IntelliJ Community Edition python-community library. This is release number 1 of trunk branch 142.
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/*
 * Copyright 2000-2014 JetBrains s.r.o.
 *
 * Licensed 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 com.jetbrains.python.run;

import com.intellij.execution.ExecutionException;
import com.intellij.execution.configurations.GeneralCommandLine;
import com.intellij.execution.process.ProcessHandler;
import com.intellij.execution.process.ProcessTerminatedListener;
import com.intellij.openapi.application.Application;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.projectRoots.Sdk;
import com.intellij.openapi.projectRoots.SdkAdditionalData;
import com.intellij.util.PathMappingSettings;
import com.jetbrains.python.remote.PyRemoteSdkAdditionalDataBase;
import com.jetbrains.python.remote.PythonRemoteInterpreterManager;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

/**
 * @author traff
 */
public class PyRemoteProcessStarter {
  public ProcessHandler startRemoteProcess(@NotNull Sdk sdk,
                                           @NotNull GeneralCommandLine commandLine,
                                           @Nullable Project project,
                                           @Nullable PathMappingSettings mappingSettings)
    throws ExecutionException {
    PythonRemoteInterpreterManager manager = PythonRemoteInterpreterManager.getInstance();
    if (manager != null) {
      ProcessHandler processHandler;

      try {
        processHandler = doStartRemoteProcess(sdk, commandLine, manager, project, mappingSettings);
      }
      catch (ExecutionException e) {
        final Application application = ApplicationManager.getApplication();
        if (application != null && (application.isUnitTestMode() || application.isHeadlessEnvironment())) {
          throw new RuntimeException(e);
        }
        throw new ExecutionException("Can't run remote python interpreter: " + e.getMessage(), e);
      }
      ProcessTerminatedListener.attach(processHandler);
      return processHandler;
    }
    else {
      throw new PythonRemoteInterpreterManager.PyRemoteInterpreterExecutionException();
    }
  }

  protected ProcessHandler doStartRemoteProcess(@NotNull Sdk sdk,
                                                @NotNull GeneralCommandLine commandLine,
                                                @NotNull PythonRemoteInterpreterManager manager,
                                                @Nullable Project project,
                                                @Nullable PathMappingSettings settings)
    throws ExecutionException {

    SdkAdditionalData data = sdk.getSdkAdditionalData();
    assert data instanceof PyRemoteSdkAdditionalDataBase;
    PyRemoteSdkAdditionalDataBase pyRemoteSdkAdditionalDataBase = (PyRemoteSdkAdditionalDataBase)data;
    try {
      settings = manager.setupMappings(project, pyRemoteSdkAdditionalDataBase, settings);

      return manager.startRemoteProcess(project, pyRemoteSdkAdditionalDataBase.getRemoteSdkCredentials(true), commandLine,
                                        settings);
    }
    catch (InterruptedException e) {
      throw new ExecutionException(e); //TODO: handle exception
    }
  }
}