import org.apache.hadoop.yarn.server.nodemanager.webapp.dao.AppsInfo; //导入依赖的package包/类
@GET
@Path("/apps")
@Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
public AppsInfo getNodeApps(@QueryParam("state") String stateQuery,
    @QueryParam("user") String userQuery) {
  init();
  AppsInfo allApps = new AppsInfo();
  for (Entry<ApplicationId, Application> entry : this.nmContext
      .getApplications().entrySet()) {

    AppInfo appInfo = new AppInfo(entry.getValue());
    if (stateQuery != null && !stateQuery.isEmpty()) {
      ApplicationState.valueOf(stateQuery);
      if (!appInfo.getState().equalsIgnoreCase(stateQuery)) {
        continue;
      }
    }
    if (userQuery != null) {
      if (userQuery.isEmpty()) {
        String msg = "Error: You must specify a non-empty string for the user";
        throw new BadRequestException(msg);
      }
      if (!appInfo.getUser().toString().equals(userQuery)) {
        continue;
      }
    }
    allApps.add(appInfo);
  }
  return allApps;
}
 

import org.apache.hadoop.yarn.server.nodemanager.webapp.dao.AppsInfo; //导入依赖的package包/类
@GET
@Path("/apps")
@Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
public AppsInfo getNodeApps(@QueryParam("state") String stateQuery,
    @QueryParam("user") String userQuery) {
  init();
  AppsInfo allApps = new AppsInfo();
  for (Entry<ApplicationId, Application> entry : this.nmContext
      .getApplications().entrySet()) {

    AppInfo appInfo = new AppInfo(entry.getValue());
    if (stateQuery != null && !stateQuery.isEmpty()) {
      ApplicationState.valueOf(stateQuery);
      if (!appInfo.getState().equalsIgnoreCase(stateQuery)) {
        continue;
      }
    }
    if (userQuery != null) {
      if (userQuery.isEmpty()) {
        String msg = "Error: You must specify a non-empty string for the user";
        throw new BadRequestException(msg);
      }
      if (!appInfo.getUser().equals(userQuery)) {
        continue;
      }
    }
    allApps.add(appInfo);
  }
  return allApps;
}