feature(Execution): Allow ignoring failed stages

gate-core/src/main/java/com/netflix/spinnaker/gate/services/internal/OrcaService.java

@@ -106,6 +106,13 @@ Map restartPipelineStage(
       @Path("stageId") String stageId,
       @Body Map restartDetails);
 
+  @Headers("Accept: application/json")
+  @PUT("/pipelines/{executionId}/stages/{stageId}/ignoreFailure")
+  Map ignorePipelineStageFailure(
+      @Path("executionId") String executionId,
+      @Path("stageId") String stageId,
+      @Body Map ignoreFailureDetails);
+
   @Headers("Accept: application/json")
   @POST("/orchestrate")
   Map startPipeline(@Body Map pipelineConfig, @Query("user") String user);

gate-web/src/main/groovy/com/netflix/spinnaker/gate/controllers/PipelineController.groovy

@@ -177,6 +177,12 @@ class PipelineController {
     pipelineService.restartPipelineStage(id, stageId, context)
   }
 
+  @ApiOperation(value = "Ignore the failure of a stage", response = HashMap.class)
+  @PutMapping("/{id}/stages/{stageId}/ignoreFailure")
+  Map ignoreStageFailure(@PathVariable("id") String id, @PathVariable("stageId") String stageId, @RequestBody Map context) {
+    pipelineService.ignorePipelineStageFailure(id, stageId, context)
+  }
+
   @ApiOperation(value = "Delete a pipeline execution", response = HashMap.class)
   @DeleteMapping("{id}")
   Map deletePipeline(@PathVariable("id") String id) {

gate-web/src/main/groovy/com/netflix/spinnaker/gate/services/PipelineService.groovy

@@ -153,6 +153,11 @@ class PipelineService {
     orcaServiceSelector.select().restartPipelineStage(executionId, stageId, context)
   }
 
+  Map ignorePipelineStageFailure(String executionId, String stageId, Map context) {
+    setApplicationForExecution(executionId)
+    orcaServiceSelector.select().ignorePipelineStageFailure(executionId, stageId, context)
+  }
+
   Map evaluateExpressionForExecution(String executionId, String pipelineExpression) {
     orcaServiceSelector.select().evaluateExpressionForExecution(executionId, pipelineExpression)
   }