add capability to set an instance identifier which labels all metrics

Dockerfile

@@ -43,6 +43,10 @@ RUN npm install
 
 WORKDIR /
 
+COPY entrypoint.sh .
+RUN chmod +x ./entrypoint.sh
+
 COPY runner.sh .
 
+ENTRYPOINT ["./entrypoint.sh"]
 CMD [ "./runner.sh" ]

config/default.json

@@ -55,6 +55,7 @@
     "collectorHost": "",
     "exportIntervalMillis": 30000,
     "exportTimeoutMillis": 20000,
+    "instanceIdentifier": "",
     "prometheusPort": 0
   },
   "db": {

config/env/dev.json

@@ -56,6 +56,7 @@
     "traceRatio": "@@METRICS_TRACE_RATIO",
     "exportIntervalMillis": "@@METRICS_EXPORT_INTERVAL_MS",
     "exportTimeoutMillis": "@@METRICS_EXPORT_TIMEOUT_MS",
+    "instanceIdentifier": "@@INSTANCE_IDENTIFIER",
     "prometheusPort": "@@METRICS_PORT"
   },
   "db": {

config/env/prod.json

@@ -56,6 +56,7 @@
     "traceRatio": "@@METRICS_TRACE_RATIO",
     "exportIntervalMillis": "@@METRICS_EXPORT_INTERVAL_MS",
     "exportTimeoutMillis": "@@METRICS_EXPORT_TIMEOUT_MS",
+    "instanceIdentifier": "@@INSTANCE_IDENTIFIER",
     "prometheusPort": "@@METRICS_PORT"
   },
   "db": {

config/env/test.json

@@ -37,6 +37,7 @@
     "traceRatio": "@@METRICS_TRACE_RATIO",
     "exportIntervalMillis": "@@METRICS_EXPORT_INTERVAL_MS",
     "exportTimeoutMillis": "@@METRICS_EXPORT_TIMEOUT_MS",
+    "instanceIdentifier": "@@INSTANCE_IDENTIFIER",
     "prometheusPort": "@@METRICS_PORT"
   },
   "db": {

entrypoint.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+instance_uri=$ECS_CONTAINER_METADATA_URI
+
+# Parse the last portion of the URI
+instance_id=${instance_uri##*/}
+
+# Remove everything after the hyphen to get the task ID
+instance_id=${instance_id%%-*}
+
+# if present, will be the task ID, otherwise empty string
+export INSTANCE_IDENTIFIER=$instance_id
+
+exec "$@"

package.json

@@ -53,7 +53,7 @@
     "@ceramicnetwork/common": "^2.28.0-rc.0",
     "@ceramicnetwork/core": "^2.35.0-rc.0",
     "@ceramicnetwork/logger": "^2.5.0",
-    "@ceramicnetwork/observability": "^1.4.6",
+    "@ceramicnetwork/observability": "^1.5.0",
     "@ceramicnetwork/streamid": "^2.15.0-rc.0",
     "@ceramicnetwork/wasm-bloom-filter": "^0.1.0",
     "@overnightjs/core": "^1.7.6",

src/__tests__/ceramic_integration.test.ts

@@ -584,3 +584,42 @@ describe('CAR file', () => {
     await casIPFS.stop()
   })
 })
+
+describe('Metrics Options', () => {
+  test('cas starts with a typical instance identifier', async () => {
+    const ipfsApiPort = await getPort()
+    const casIPFS = await createIPFS(ipfsApiPort)
+    const ganacheServer = await makeGanache()
+    const dbConnection = await createDbConnection()
+    const casPort = await getPort()
+    const cas = await makeCAS(createInjector(), dbConnection, {
+      mode: 'server',
+      ipfsPort: ipfsApiPort,
+      ganachePort: ganacheServer.port,
+      port: casPort,
+      useSmartContractAnchors: true,
+      metrics: {
+        instanceIdentifier: '234fffffffffffffffffffffffffffffffff9726129'
+      }
+    })
+    await cas.start()
+    // Teardown
+    await cas.stop()
+
+    const cas2 = await makeCAS(createInjector(), dbConnection, {
+      mode: 'server',
+      ipfsPort: ipfsApiPort,
+      ganachePort: ganacheServer.port,
+      port: casPort,
+      useSmartContractAnchors: true,
+      metrics: {
+        instanceIdentifier: ''
+      }
+    })
+    await cas2.start()
+    await cas2.stop()
+
+    await ganacheServer.close()
+    await casIPFS.stop()
+  })
+})

src/app.ts

@@ -129,6 +129,9 @@ export class CeramicAnchorApp {
       )
       Metrics.count('HELLO', 1)
       logger.imp('Metrics exporter started')
+      if (this.config.metrics.instanceIdentifier) {
+         Metrics.setInstanceIdentifier(this.config.metrics.instanceIdentifier)
+      }
     } catch (e: any) {
       logger.imp('ERROR: Metrics exporter failed to start. Continuing anyway.')
       logger.err(e)