fix: still set dsm consume checkpoint when no DSM parent context is available

packages/datadog-plugin-amqplib/src/consumer.js

@@ -3,7 +3,6 @@
 const { TEXT_MAP } = require('../../../ext/formats')
 const ConsumerPlugin = require('../../dd-trace/src/plugins/consumer')
 const { getAmqpMessageSize } = require('../../dd-trace/src/datastreams/processor')
-const { DsmPathwayCodec } = require('../../dd-trace/src/datastreams/pathway')
 const { getResourceName } = require('./util')
 
 class AmqplibConsumerPlugin extends ConsumerPlugin {
@@ -30,8 +29,7 @@ class AmqplibConsumerPlugin extends ConsumerPlugin {
     })
 
     if (
-      this.config.dsmEnabled && message?.properties?.headers &&
-      DsmPathwayCodec.contextExists(message.properties.headers)
+      this.config.dsmEnabled && message?.properties?.headers
     ) {
       const payloadSize = getAmqpMessageSize({ headers: message.properties.headers, content: message.content })
       const queue = fields.queue ? fields.queue : fields.routingKey

packages/datadog-plugin-aws-sdk/src/services/kinesis.js

@@ -113,7 +113,7 @@ class Kinesis extends BaseAwsSdkPlugin {
       const parsedAttributes = JSON.parse(Buffer.from(record.Data).toString())
 
       if (
-        parsedAttributes?._datadog && streamName && DsmPathwayCodec.contextExists(parsedAttributes._datadog)
+        parsedAttributes?._datadog && streamName
       ) {
         const payloadSize = getSizeOrZero(record.Data)
         this.tracer.decodeDataStreamsContext(parsedAttributes._datadog)

packages/datadog-plugin-aws-sdk/src/services/sqs.js

@@ -194,7 +194,7 @@ class Sqs extends BaseAwsSdkPlugin {
           parsedAttributes = this.parseDatadogAttributes(message.MessageAttributes._datadog)
         }
       }
-      if (parsedAttributes && DsmPathwayCodec.contextExists(parsedAttributes)) {
+      if (parsedAttributes) {
         const payloadSize = getHeadersSize({
           Body: message.Body,
           MessageAttributes: message.MessageAttributes

packages/datadog-plugin-kafkajs/src/batch-consumer.js

@@ -1,6 +1,5 @@
 const ConsumerPlugin = require('../../dd-trace/src/plugins/consumer')
 const { getMessageSize } = require('../../dd-trace/src/datastreams/processor')
-const { DsmPathwayCodec } = require('../../dd-trace/src/datastreams/pathway')
 
 class KafkajsBatchConsumerPlugin extends ConsumerPlugin {
   static get id () { return 'kafkajs' }
@@ -9,7 +8,7 @@ class KafkajsBatchConsumerPlugin extends ConsumerPlugin {
   start ({ topic, partition, messages, groupId }) {
     if (!this.config.dsmEnabled) return
     for (const message of messages) {
-      if (!message || !message.headers || !DsmPathwayCodec.contextExists(message.headers)) continue
+      if (!message || !message.headers) continue
       const payloadSize = getMessageSize(message)
       this.tracer.decodeDataStreamsContext(message.headers)
       this.tracer

packages/datadog-plugin-kafkajs/src/consumer.js

@@ -2,7 +2,6 @@
 
 const dc = require('dc-polyfill')
 const { getMessageSize } = require('../../dd-trace/src/datastreams/processor')
-const { DsmPathwayCodec } = require('../../dd-trace/src/datastreams/pathway')
 const ConsumerPlugin = require('../../dd-trace/src/plugins/consumer')
 
 const afterStartCh = dc.channel('dd-trace:kafkajs:consumer:afterStart')
@@ -78,7 +77,7 @@ class KafkajsConsumerPlugin extends ConsumerPlugin {
         'kafka.partition': partition
       }
     })
-    if (this.config.dsmEnabled && message?.headers && DsmPathwayCodec.contextExists(message.headers)) {
+    if (this.config.dsmEnabled && message?.headers) {
       const payloadSize = getMessageSize(message)
       this.tracer.decodeDataStreamsContext(message.headers)
       this.tracer

packages/datadog-plugin-rhea/src/consumer.js

@@ -3,7 +3,6 @@
 const ConsumerPlugin = require('../../dd-trace/src/plugins/consumer')
 const { storage } = require('../../datadog-core')
 const { getAmqpMessageSize } = require('../../dd-trace/src/datastreams/processor')
-const { DsmPathwayCodec } = require('../../dd-trace/src/datastreams/pathway')
 
 class RheaConsumerPlugin extends ConsumerPlugin {
   static get id () { return 'rhea' }
@@ -34,8 +33,7 @@ class RheaConsumerPlugin extends ConsumerPlugin {
 
     if (
       this.config.dsmEnabled &&
-      msgObj?.message?.delivery_annotations &&
-      DsmPathwayCodec.contextExists(msgObj.message.delivery_annotations)
+      msgObj?.message?.delivery_annotations
     ) {
       const payloadSize = getAmqpMessageSize(
         { headers: msgObj.message.delivery_annotations, content: msgObj.message.body }

packages/dd-trace/src/data_streams_context.js

@@ -1,11 +1,14 @@
 const { storage } = require('../../datadog-core')
+const log = require('./log')
 
 function getDataStreamsContext () {
   const store = storage.getStore()
   return (store && store.dataStreamsContext) || null
 }
 
 function setDataStreamsContext (dataStreamsContext) {
+  log.debug(() => `Setting new DSM Context: ${JSON.stringify(dataStreamsContext)}.`)
+
   if (dataStreamsContext) storage.enterWith({ ...(storage.getStore()), dataStreamsContext })
 }
 

packages/dd-trace/src/datastreams/pathway.js

@@ -4,13 +4,17 @@
 const crypto = require('crypto')
 const { encodeVarint, decodeVarint } = require('./encoding')
 const LRUCache = require('lru-cache')
+const log = require('../log')
+const pick = require('../../../datadog-core/src/utils/src/pick')
 
 const options = { max: 500 }
 const cache = new LRUCache(options)
 
 const CONTEXT_PROPAGATION_KEY = 'dd-pathway-ctx'
 const CONTEXT_PROPAGATION_KEY_BASE64 = 'dd-pathway-ctx-base64'
 
+const logKeys = [CONTEXT_PROPAGATION_KEY, CONTEXT_PROPAGATION_KEY_BASE64]
+
 function shaHash (checkpointString) {
   const hash = crypto.createHash('md5').update(checkpointString).digest('hex').slice(0, 16)
   return Buffer.from(hash, 'hex')
@@ -80,9 +84,13 @@ class DsmPathwayCodec {
       return
     }
     carrier[CONTEXT_PROPAGATION_KEY_BASE64] = encodePathwayContextBase64(dataStreamsContext)
+
+    log.debug(() => `Injected into DSM carrier: ${JSON.stringify(pick(carrier, logKeys))}.`)
   }
 
   static decode (carrier) {
+    log.debug(() => `Attempting extract from DSM carrier: ${JSON.stringify(pick(carrier, logKeys))}.`)
+
     if (carrier == null) return
 
     let ctx
@@ -97,13 +105,12 @@ class DsmPathwayCodec {
         // pass
       }
       // cover case where base64 context was received under wrong key
-      if (!ctx) ctx = decodePathwayContextBase64(carrier[CONTEXT_PROPAGATION_KEY])
+      if (!ctx && CONTEXT_PROPAGATION_KEY in carrier) {
+        ctx = decodePathwayContextBase64(carrier[CONTEXT_PROPAGATION_KEY])
+      }
     }
-    return ctx
-  }
 
-  static contextExists (carrier) {
-    return CONTEXT_PROPAGATION_KEY_BASE64 in carrier || CONTEXT_PROPAGATION_KEY in carrier
+    return ctx
   }
 }
 

packages/dd-trace/src/datastreams/processor.js

@@ -11,6 +11,7 @@ const { types } = require('util')
 const { PATHWAY_HASH } = require('../../../../ext/tags')
 const { SchemaBuilder } = require('./schemas/schema_builder')
 const { SchemaSampler } = require('./schemas/schema_sampler')
+const log = require('../log')
 
 const ENTRY_PARENT_HASH = Buffer.from('0000000000000000', 'hex')
 
@@ -272,6 +273,11 @@ class DataStreamsProcessor {
         closestOppositeDirectionHash = parentHash
         closestOppositeDirectionEdgeStart = edgeStartNs
       }
+      log.debug(
+        () => `Setting DSM Checkpoint from extracted parent context with hash: ${parentHash} and edge tags: ${edgeTags}`
+      )
+    } else {
+      log.debug(() => 'Setting DSM Checkpoint with empty parent context.')
     }
     const hash = computePathwayHash(this.service, this.env, edgeTags, parentHash)
     const edgeLatencyNs = nowNs - edgeStartNs