[receiver/filestats] fix file.path value (#31753)

**Description:**
Fix absolute path of file path

**Link to tracking Issue:**
Fixes #31738

Author: atoulme

.chloggen/filestats_filepath.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: filestatsreceiver
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Fix file.path to return the proper absolute path of the file
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [31738]
+
+# (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/filestatsreceiver/integration_test.go

@@ -6,10 +6,13 @@
 package filestatsreceiver
 
 import (
+	"os"
 	"path/filepath"
+	"strings"
 	"testing"
 	"time"
 
+	"github.com/stretchr/testify/require"
 	"go.opentelemetry.io/collector/component"
 
 	"github.com/open-telemetry/opentelemetry-collector-contrib/internal/coreinternal/scraperinttest"
@@ -18,17 +21,24 @@ import (
 
 func Test_Integration(t *testing.T) {
 	expectedFile := filepath.Join("testdata", "integration", "expected.yaml")
-
+	tempDir := t.TempDir()
+	require.NoError(t, os.WriteFile(filepath.Join(tempDir, "foo.txt"), []byte("foo"), 0600))
+	require.NoError(t, os.WriteFile(filepath.Join(tempDir, "bar.txt"), []byte("bar"), 0600))
+	require.NoError(t, os.WriteFile(filepath.Join(tempDir, "foobar.txt"), []byte("foobar"), 0600))
 	scraperinttest.NewIntegrationTest(
 		NewFactory(),
 		scraperinttest.WithCustomConfig(
 			func(_ *testing.T, cfg component.Config, _ *scraperinttest.ContainerInfo) {
 				rCfg := cfg.(*Config)
 				rCfg.CollectionInterval = time.Second
-				rCfg.Include = "filestats_*"
+				rCfg.Include = filepath.Join(tempDir, "foo*")
+				rCfg.ResourceAttributes.FilePath.Enabled = true
 			}),
 		scraperinttest.WithExpectedFile(expectedFile),
 		scraperinttest.WithCompareOptions(
+			pmetrictest.ChangeResourceAttributeValue("file.path", func(s string) string {
+				return strings.TrimPrefix(s, tempDir)
+			}),
 			pmetrictest.IgnoreResourceMetricsOrder(),
 			pmetrictest.IgnoreMetricValues(),
 			pmetrictest.IgnoreMetricDataPointsOrder(),

receiver/filestatsreceiver/scraper.go

@@ -6,7 +6,6 @@ package filestatsreceiver // import "github.com/open-telemetry/opentelemetry-col
 import (
 	"context"
 	"os"
-	"path/filepath"
 	"time"
 
 	"github.com/bmatcuk/doublestar/v4"
@@ -42,18 +41,13 @@ func (s *scraper) scrape(_ context.Context) (pmetric.Metrics, error) {
 			scrapeErrors = append(scrapeErrors, err)
 			continue
 		}
-		path, err := filepath.Abs(fileinfo.Name())
-		if err != nil {
-			scrapeErrors = append(scrapeErrors, err)
-			continue
-		}
 		s.mb.RecordFileSizeDataPoint(now, fileinfo.Size())
 		s.mb.RecordFileMtimeDataPoint(now, fileinfo.ModTime().Unix())
 		collectStats(now, fileinfo, s.mb, s.logger)
 
 		rb := s.mb.NewResourceBuilder()
 		rb.SetFileName(fileinfo.Name())
-		rb.SetFilePath(path)
+		rb.SetFilePath(match)
 		s.mb.EmitForResource(metadata.WithResource(rb.Emit()))
 	}
 

receiver/filestatsreceiver/testdata/integration/expected.yaml

@@ -3,49 +3,25 @@ resourceMetrics:
       attributes:
         - key: file.name
           value:
-            stringValue: filestats_darwin.go
-    scopeMetrics:
-      - metrics:
-          - description: Elapsed time since the last modification of the file or folder, in seconds since Epoch.
-            name: file.mtime
-            sum:
-              aggregationTemporality: 2
-              dataPoints:
-                - asInt: "1703319421"
-                  startTimeUnixNano: "1000000"
-                  timeUnixNano: "2000000"
-            unit: s
-          - description: The size of the file or folder, in bytes.
-            gauge:
-              dataPoints:
-                - asInt: "882"
-                  startTimeUnixNano: "1000000"
-                  timeUnixNano: "2000000"
-            name: file.size
-            unit: b
-        scope:
-          name: otelcol/filestatsreceiver
-          version: latest
-  - resource:
-      attributes:
-        - key: file.name
+            stringValue: foo.txt
+        - key: file.path
           value:
-            stringValue: filestats_linux.go
+            stringValue: /foo.txt
     scopeMetrics:
       - metrics:
           - description: Elapsed time since the last modification of the file or folder, in seconds since Epoch.
             name: file.mtime
             sum:
               aggregationTemporality: 2
               dataPoints:
-                - asInt: "1703319421"
+                - asInt: "1710390874"
                   startTimeUnixNano: "1000000"
                   timeUnixNano: "2000000"
             unit: s
           - description: The size of the file or folder, in bytes.
             gauge:
               dataPoints:
-                - asInt: "845"
+                - asInt: "3"
                   startTimeUnixNano: "1000000"
                   timeUnixNano: "2000000"
             name: file.size
@@ -57,49 +33,25 @@ resourceMetrics:
       attributes:
         - key: file.name
           value:
-            stringValue: filestats_other.go
-    scopeMetrics:
-      - metrics:
-          - description: Elapsed time since the last modification of the file or folder, in seconds since Epoch.
-            name: file.mtime
-            sum:
-              aggregationTemporality: 2
-              dataPoints:
-                - asInt: "1703319421"
-                  startTimeUnixNano: "1000000"
-                  timeUnixNano: "2000000"
-            unit: s
-          - description: The size of the file or folder, in bytes.
-            gauge:
-              dataPoints:
-                - asInt: "776"
-                  startTimeUnixNano: "1000000"
-                  timeUnixNano: "2000000"
-            name: file.size
-            unit: b
-        scope:
-          name: otelcol/filestatsreceiver
-          version: latest
-  - resource:
-      attributes:
-        - key: file.name
+            stringValue: foobar.txt
+        - key: file.path
           value:
-            stringValue: filestats_windows.go
+            stringValue: /foobar.txt
     scopeMetrics:
       - metrics:
           - description: Elapsed time since the last modification of the file or folder, in seconds since Epoch.
             name: file.mtime
             sum:
               aggregationTemporality: 2
               dataPoints:
-                - asInt: "1703319421"
+                - asInt: "1710390874"
                   startTimeUnixNano: "1000000"
                   timeUnixNano: "2000000"
             unit: s
           - description: The size of the file or folder, in bytes.
             gauge:
               dataPoints:
-                - asInt: "901"
+                - asInt: "6"
                   startTimeUnixNano: "1000000"
                   timeUnixNano: "2000000"
             name: file.size