From 9283312acb2f03f47ca40702fbba3a42a81047a2 Mon Sep 17 00:00:00 2001
From: daz <daz@gradle.com>
Date: Tue, 23 Jan 2024 15:22:33 -0700
Subject: [PATCH] Add new option to clear dependency-graph

When changing workflow names or when changing to the new 'dependency-submission'
action, it can be useful to clear existing dependency graph snapshots from previous
submissions. While the old graphs will eventually "age out", the 'clear' option will
submit an empty dependency graph for an existing Job correlator, ensuring that old
dependency graphs don't linger.
---
 action.yml              | 2 +-
 src/dependency-graph.ts | 7 +++++++
 src/input-params.ts     | 5 ++++-
 3 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/action.yml b/action.yml
index ec5b0d1..d120f55 100644
--- a/action.yml
+++ b/action.yml
@@ -69,7 +69,7 @@ inputs:
     default: true
 
   dependency-graph:
-    description: Specifies if a GitHub dependency snapshot should be generated for each Gradle build, and if so, how. Valid values are 'disabled' (default), 'generate', 'generate-and-submit' and 'download-and-submit'.
+    description: Specifies if a GitHub dependency snapshot should be generated for each Gradle build, and if so, how. Valid values are 'disabled' (default), 'generate', 'generate-and-submit', 'download-and-submit' and 'clear'.
     required: false
     default: 'disabled'
 
diff --git a/src/dependency-graph.ts b/src/dependency-graph.ts
index 4f61881..2f8090d 100644
--- a/src/dependency-graph.ts
+++ b/src/dependency-graph.ts
@@ -36,6 +36,12 @@ export async function setup(option: DependencyGraphOption): Promise<void> {
         'DEPENDENCY_GRAPH_REPORT_DIR',
         path.resolve(layout.workspaceDirectory(), 'dependency-graph-reports')
     )
+
+    // To clear the dependency graph, we generate an empty graph by excluding all projects and configurations
+    if (option === DependencyGraphOption.Clear) {
+        core.exportVariable('DEPENDENCY_GRAPH_INCLUDE_PROJECTS', '')
+        core.exportVariable('DEPENDENCY_GRAPH_INCLUDE_CONFIGURATIONS', '')
+    }
 }
 
 export async function complete(option: DependencyGraphOption): Promise<void> {
@@ -47,6 +53,7 @@ export async function complete(option: DependencyGraphOption): Promise<void> {
             await uploadDependencyGraphs()
             return
         case DependencyGraphOption.GenerateAndSubmit:
+        case DependencyGraphOption.Clear: // Submit the empty dependency graph
             await submitDependencyGraphs(await uploadDependencyGraphs())
             return
     }
diff --git a/src/input-params.ts b/src/input-params.ts
index 06c2262..c1aa967 100644
--- a/src/input-params.ts
+++ b/src/input-params.ts
@@ -82,6 +82,8 @@ export function getDependencyGraphOption(): DependencyGraphOption {
             return DependencyGraphOption.GenerateAndSubmit
         case 'download-and-submit':
             return DependencyGraphOption.DownloadAndSubmit
+        case 'clear':
+            return DependencyGraphOption.Clear
     }
     throw TypeError(
         `The value '${val} is not valid for 'dependency-graph. Valid values are: [disabled, generate-and-upload, generate-and-submit, download-and-submit]. The default value is 'disabled'.`
@@ -122,5 +124,6 @@ export enum DependencyGraphOption {
     Disabled,
     Generate,
     GenerateAndSubmit,
-    DownloadAndSubmit
+    DownloadAndSubmit,
+    Clear
 }