refactor(cache): Deprecate namespace parameter in decorators

lib/util/cache/package/decorator.spec.ts

@@ -46,6 +46,28 @@ describe('util/cache/package/decorator', () => {
     );
   });
 
+  it('should use default namespace equal to class name', async () => {
+    class SomeClass {
+      @cache({ key: 'some-key' })
+      public fn(): Promise<string> {
+        return getValue();
+      }
+    }
+    const obj = new SomeClass();
+
+    expect(await obj.fn()).toBe('111');
+    expect(await obj.fn()).toBe('111');
+    expect(await obj.fn()).toBe('111');
+
+    expect(getValue).toHaveBeenCalledTimes(1);
+    expect(setCache).toHaveBeenCalledExactlyOnceWith(
+      'SomeClass',
+      'cache-decorator:some-key',
+      { cachedAt: expect.any(String), value: '111' },
+      30,
+    );
+  });
+
   it('disables cache if cacheability check is false', async () => {
     class Class {
       @cache({

lib/util/cache/package/decorator.ts

@@ -21,8 +21,10 @@ interface CacheParameters {
   /**
    * The cache namespace
    * Either a string or a hash function that generates a string
+   *
+   * @deprecated
    */
-  namespace: PackageCacheNamespace | NamespaceFunction;
+  namespace?: PackageCacheNamespace | NamespaceFunction;
 
   /**
    * The cache key
@@ -42,6 +44,15 @@ interface CacheParameters {
   ttlMinutes?: number;
 }
 
+function getClassName(instance: unknown): string | undefined {
+  // istanbul ignore if: should never happen
+  if (!is.object(instance)) {
+    return undefined;
+  }
+
+  return instance.constructor.name;
+}
+
 /**
  * caches the result of a decorated method.
  */
@@ -66,6 +77,8 @@ export function cache<T>({
       finalNamespace = namespace;
     } else if (is.function_(namespace)) {
       finalNamespace = namespace.apply(instance, args);
+    } else {
+      finalNamespace = getClassName(instance);
     }
 
     let finalKey: string | undefined;

lib/util/cache/package/types.ts

@@ -16,89 +16,6 @@ export interface DecoratorCachedRecord {
   cachedAt: string;
 }
 
-export type PackageCacheNamespace =
-  | '_test-namespace'
-  | 'changelog-bitbucket-notes@v2'
-  | 'changelog-bitbucket-release'
-  | 'changelog-gitea-notes@v2'
-  | 'changelog-gitea-release'
-  | 'changelog-github-notes@v2'
-  | 'changelog-github-release'
-  | 'changelog-gitlab-notes@v2'
-  | 'changelog-gitlab-release'
-  | 'datasource-artifactory'
-  | 'datasource-aws-machine-image'
-  | 'datasource-aws-rds'
-  | 'datasource-azure-bicep-resource'
-  | 'datasource-azure-pipelines-tasks'
-  | 'datasource-bazel'
-  | 'datasource-bitbucket-tags'
-  | 'datasource-bitrise'
-  | 'datasource-cdnjs'
-  | 'datasource-conan'
-  | 'datasource-conda'
-  | 'datasource-cpan'
-  | 'datasource-crate-metadata'
-  | 'datasource-crate'
-  | 'datasource-deb'
-  | 'datasource-deno'
-  | 'datasource-docker-architecture'
-  | 'datasource-docker-hub-cache'
-  | 'datasource-docker-digest'
-  | 'datasource-docker-hub-tags'
-  | 'datasource-docker-imageconfig'
-  | 'datasource-docker-labels'
-  | 'datasource-docker-releases-v2'
-  | 'datasource-docker-tags'
-  | 'datasource-dotnet-version'
-  | 'datasource-endoflife-date'
-  | 'datasource-galaxy-collection'
-  | 'datasource-galaxy'
-  | 'datasource-git-refs'
-  | 'datasource-git-tags'
-  | 'datasource-git'
-  | 'datasource-gitea-releases'
-  | 'datasource-gitea-tags'
-  | 'datasource-github-release-attachments'
-  | 'datasource-gitlab-packages'
-  | 'datasource-gitlab-releases'
-  | 'datasource-gitlab-tags'
-  | 'datasource-glasskube-packages'
-  | 'datasource-go-direct'
-  | 'datasource-go-proxy'
-  | 'datasource-go'
-  | 'datasource-golang-version'
-  | 'datasource-gradle-version'
-  | 'datasource-helm'
-  | 'datasource-hermit'
-  | 'datasource-hex'
-  | 'datasource-hexpm-bob'
-  | 'datasource-java-version'
-  | 'datasource-jenkins-plugins'
-  | 'datasource-maven:head-requests-timeout'
-  | 'datasource-maven:head-requests'
-  | 'datasource-maven:index-html-releases'
-  | 'datasource-maven:metadata-xml'
-  | 'datasource-node-version'
-  | 'datasource-npm:data'
-  | 'datasource-nuget-v3'
-  | 'datasource-orb'
-  | 'datasource-packagist'
-  | 'datasource-pod'
-  | 'datasource-python-version'
-  | 'datasource-releases'
-  | 'datasource-repology'
-  | 'datasource-ruby-version'
-  | 'datasource-rubygems'
-  | 'datasource-terraform-module'
-  | 'datasource-terraform-provider'
-  | 'datasource-terraform'
-  | 'datasource-unity3d'
-  | 'github-releases-datasource-v2'
-  | 'github-tags-datasource-v2'
-  | 'merge-confidence'
-  | 'preset'
-  | 'terraform-provider-hash'
-  | 'url-sha256';
+export type PackageCacheNamespace = string;
 
 export type CombinedKey = `global%%${PackageCacheNamespace}%%${string}`;