[reciever/azureeventhub] Set ObservedTimestamp (#36860)

.chloggen/azure-eventhub-observedtime-logs.yaml

@@ -0,0 +1,27 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: bug_fix
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: receiver/azureeventhub
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Ensure that observed timestamp is set when unmarshaling logs.
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [36861]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:
+
+# If your change doesn't affect end users or the exported elements of any package,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: []

receiver/azureeventhubreceiver/rawlogs_unmarshaler.go

@@ -4,6 +4,8 @@
 package azureeventhubreceiver // import "github.com/open-telemetry/opentelemetry-collector-contrib/receiver/azureeventhubreceiver"
 
 import (
+	"time"
+
 	eventhub "github.com/Azure/azure-event-hubs-go/v3"
 	"go.opentelemetry.io/collector/pdata/pcommon"
 	"go.opentelemetry.io/collector/pdata/plog"
@@ -25,6 +27,7 @@ func (r rawLogsUnmarshaler) UnmarshalLogs(event *eventhub.Event) (plog.Logs, err
 	lr := l.ResourceLogs().AppendEmpty().ScopeLogs().AppendEmpty().LogRecords().AppendEmpty()
 	slice := lr.Body().SetEmptyBytes()
 	slice.Append(event.Data...)
+	lr.SetObservedTimestamp(pcommon.NewTimestampFromTime(time.Now()))
 	if event.SystemProperties.EnqueuedTime != nil {
 		lr.SetTimestamp(pcommon.NewTimestampFromTime(*event.SystemProperties.EnqueuedTime))
 	}