Skip complicated rewrites, record groups. (#104)

* Set the github repository as a group

* Set the $app_name with the github action project

* features: prefix with $feature/, which previously was done by IDS

* Send a batch of events directly to /events/batch, without the server-side munging

* Store an $anon_distinct_id in the correlation, where we used to use the repository's anon hash as the distinct ID.

That was bad modeling.

* Replace the correlation data with what we actually want

It used to expect server-side munging, but that caused a ton of problems. This unifies that behavior.

* Add /action to the app name to distinguish

Author: grahamc

dist/index.d.ts

@@ -1,5 +1,5 @@
 import * as actionsCore from "@actions/core";
-import { createHash } from "node:crypto";
+import { createHash, randomUUID } from "node:crypto";
 
 const OPTIONAL_VARIABLES = ["INVOCATION_ID"];
 
@@ -8,36 +8,56 @@ const OPTIONAL_VARIABLES = ["INVOCATION_ID"];
  * JSON sent to server.
  */
 export type AnonymizedCorrelationHashes = {
+  $anon_distinct_id: string;
+  $groups: Record<string, string | undefined>;
+  $session_id?: string;
   correlation_source: string;
-  repository?: string;
-  run?: string;
-  run_differentiator?: string;
-  workflow?: string;
-  job?: string;
-  groups: Record<string, string | undefined>;
+  github_repository_hash?: string;
+  github_workflow_hash?: string;
+  github_workflow_job_hash?: string;
+  github_workflow_run_differentiator_hash?: string;
+  github_workflow_run_hash?: string;
   is_ci: boolean;
 };
 
-export function identify(projectName: string): AnonymizedCorrelationHashes {
+export function identify(): AnonymizedCorrelationHashes {
+  const repository = hashEnvironmentVariables("GHR", [
+    "GITHUB_SERVER_URL",
+    "GITHUB_REPOSITORY_OWNER",
+    "GITHUB_REPOSITORY_OWNER_ID",
+    "GITHUB_REPOSITORY",
+    "GITHUB_REPOSITORY_ID",
+  ]);
+
+  const run_differentiator = hashEnvironmentVariables("GHWJA", [
+    "GITHUB_SERVER_URL",
+    "GITHUB_REPOSITORY_OWNER",
+    "GITHUB_REPOSITORY_OWNER_ID",
+    "GITHUB_REPOSITORY",
+    "GITHUB_REPOSITORY_ID",
+    "GITHUB_WORKFLOW",
+    "GITHUB_JOB",
+    "GITHUB_RUN_ID",
+    "GITHUB_RUN_NUMBER",
+    "GITHUB_RUN_ATTEMPT",
+    "INVOCATION_ID",
+  ]);
+
   const ident: AnonymizedCorrelationHashes = {
+    $anon_distinct_id: process.env["RUNNER_TRACKING_ID"] || randomUUID(),
+
     correlation_source: "github-actions",
 
-    repository: hashEnvironmentVariables("GHR", [
-      "GITHUB_SERVER_URL",
-      "GITHUB_REPOSITORY_OWNER",
-      "GITHUB_REPOSITORY_OWNER_ID",
-      "GITHUB_REPOSITORY",
-      "GITHUB_REPOSITORY_ID",
-    ]),
-    workflow: hashEnvironmentVariables("GHW", [
+    github_repository_hash: repository,
+    github_workflow_hash: hashEnvironmentVariables("GHW", [
       "GITHUB_SERVER_URL",
       "GITHUB_REPOSITORY_OWNER",
       "GITHUB_REPOSITORY_OWNER_ID",
       "GITHUB_REPOSITORY",
       "GITHUB_REPOSITORY_ID",
       "GITHUB_WORKFLOW",
     ]),
-    job: hashEnvironmentVariables("GHWJ", [
+    github_workflow_job_hash: hashEnvironmentVariables("GHWJ", [
       "GITHUB_SERVER_URL",
       "GITHUB_REPOSITORY_OWNER",
       "GITHUB_REPOSITORY_OWNER_ID",
@@ -46,17 +66,7 @@ export function identify(projectName: string): AnonymizedCorrelationHashes {
       "GITHUB_WORKFLOW",
       "GITHUB_JOB",
     ]),
-    run: hashEnvironmentVariables("GHWJR", [
-      "GITHUB_SERVER_URL",
-      "GITHUB_REPOSITORY_OWNER",
-      "GITHUB_REPOSITORY_OWNER_ID",
-      "GITHUB_REPOSITORY",
-      "GITHUB_REPOSITORY_ID",
-      "GITHUB_WORKFLOW",
-      "GITHUB_JOB",
-      "GITHUB_RUN_ID",
-    ]),
-    run_differentiator: hashEnvironmentVariables("GHWJA", [
+    github_workflow_run_hash: hashEnvironmentVariables("GHWJR", [
       "GITHUB_SERVER_URL",
       "GITHUB_REPOSITORY_OWNER",
       "GITHUB_REPOSITORY_OWNER_ID",
@@ -65,13 +75,11 @@ export function identify(projectName: string): AnonymizedCorrelationHashes {
       "GITHUB_WORKFLOW",
       "GITHUB_JOB",
       "GITHUB_RUN_ID",
-      "GITHUB_RUN_NUMBER",
-      "GITHUB_RUN_ATTEMPT",
-      "INVOCATION_ID",
     ]),
-    groups: {
-      ci: "github-actions",
-      project: projectName,
+    github_workflow_run_differentiator_hash: run_differentiator,
+    $session_id: run_differentiator,
+    $groups: {
+      github_repository: repository,
       github_organization: hashEnvironmentVariables("GHO", [
         "GITHUB_SERVER_URL",
         "GITHUB_REPOSITORY_OWNER",