Why are only root project properties returned by Gradle properties task run on a multi-project project?

Chris_Dore · December 23, 2020, 12:45am

Correct.
The task is configured to ignore subproject tasks by the HelpTasksPlugin using an internal API

gradle/gradle/blob/master/subprojects/diagnostics/src/main/java/org/gradle/api/plugins/HelpTasksPlugin.java#L143


      
              public TaskReportTaskAction(String projectName, boolean noChildren) {
                  this.projectName = projectName;
                  this.noChildren = noChildren;
              }
          
              @Override
              public void execute(TaskReportTask task) {
                  String description;
                  if (noChildren) {
                      description = "Displays the tasks runnable from " + projectName + ".";
                  } else {
                      description = "Displays the tasks runnable from " + projectName + " (some of the displayed tasks may belong to subprojects).";
                  }
                  task.setDescription(description);
                  task.setGroup(HELP_GROUP);
                  task.setImpliesSubProjects(true);
              }
          }
          
          private static class PropertyReportTaskAction implements Action<PropertyReportTask> {
              private final String projectName;

Then TaskNameResolver does not look at subprojects for the task if impliesSubProjects is true.

github.com

gradle/gradle/blob/master/subprojects/core/src/main/java/org/gradle/execution/TaskNameResolver.java#L179


      
              @Override
              public void collectTasks(Collection<? super Task> tasks) {
                  collect(project, tasks);
              }
          
              private void collect(ProjectInternal project, Collection<? super Task> tasks) {
                  if (!discovered) {
                      discoverTasks(project);
                  }
                  if (hasTask(taskName, project)) {
                      TaskInternal task = getExistingTask(project, taskName);
                      tasks.add(task);
                      if (task.getImpliesSubProjects()) {
                          return;
                      }
                  }
                  for (Project subProject : getChildProjectsForInternalUse(project)) {
                      collect((ProjectInternal) subProject, tasks);
                  }
              }
          }

Topic		Replies	Views
Executing tasks by name on multi-project Help/Discuss	6	549	July 21, 2023
Use subproject properties in shared task Help/Discuss	1	2398	November 15, 2017
Gradle task execution runs a subjproject task on its own, rather than in the context of the whole multiproject Buildship	8	1939	May 5, 2023
Executing 'gradle :tasks' for the root-project only Old Forum Archive	0	936	August 13, 2014
Same-named tasks not run on children in an included build Help/Discuss	2	153	April 15, 2024

Why are only root project properties returned by Gradle properties task run on a multi-project project?

Related topics