fix: handle absolute paths

internal/certificate.go

@@ -135,10 +135,19 @@ func readAndParseYAMLFile(filePath string, yamlPaths []YAMLCertRef) ([]*parsedCe
 			decodedCerts = make([]byte, base64.StdEncoding.DecodedLen(len(rawCerts)))
 			base64.StdEncoding.Decode(decodedCerts, []byte(rawCerts))
 		} else if exprs.Format == YAMLCertFormatFile {
-			certPath := path.Join(filepath.Dir(filePath), string(rawCerts))
-			decodedCerts, err = ioutil.ReadFile(strings.TrimRight(certPath, "\n"))
-			if err != nil {
-				return nil, err
+			rawCertPaths := strings.TrimRight(string(rawCerts), "\n")
+
+			for _, certPath := range strings.Split(rawCertPaths, "\n") {
+				if !path.IsAbs(certPath) {
+					certPath = path.Join(filepath.Dir(filePath), rawCertPaths)
+				}
+
+				data, err := ioutil.ReadFile(certPath)
+				if err != nil {
+					return nil, err
+				}
+
+				decodedCerts = append(decodedCerts, data...)
 			}
 		}
 

internal/exporter_test.go

@@ -157,6 +157,34 @@ func TestYAMLPath(t *testing.T) {
 	})
 }
 
+func TestYAMLAbsolutePath(t *testing.T) {
+	_, filename, _, _ := runtime.Caller(0)
+
+	template, err := ioutil.ReadFile(path.Join(filepath.Dir(filename), "../test/yaml-abs-paths.conf"))
+	assert.Nil(t, err)
+
+	cwd, err := os.Getwd()
+	assert.Nil(t, err)
+
+	data := strings.ReplaceAll(string(template), "{{PWD}}", path.Join(cwd, ".."))
+	err = ioutil.WriteFile("/tmp/test-abs.yaml", []byte(data), 0644)
+	assert.Nil(t, err)
+
+	testRequest(t, &Exporter{
+		YAMLs:     []string{"/tmp/test-abs.yaml"},
+		YAMLPaths: DefaultYamlPaths,
+	}, func(metrics []model.MetricFamily) {
+		foundMetrics := getMetricsForName(metrics, "x509_cert_expired")
+		assert.Len(t, foundMetrics, 2, "missing x509_cert_expired metric(s)")
+
+		foundNbMetrics := getMetricsForName(metrics, "x509_cert_not_before")
+		assert.Len(t, foundNbMetrics, 2, "missing x509_cert_not_before metric(s)")
+
+		foundNaMetrics := getMetricsForName(metrics, "x509_cert_not_after")
+		assert.Len(t, foundNaMetrics, 2, "missing x509_cert_not_after metric(s)")
+	})
+}
+
 func TestYAMLMixed(t *testing.T) {
 	_, filename, _, _ := runtime.Caller(0)
 
@@ -459,7 +487,6 @@ func testRequest(t *testing.T, e *Exporter, cb func(metrics []model.MetricFamily
 			metrics = append(metrics, metric)
 		}
 
-		fmt.Printf("%d", len(metrics))
 		cb(metrics)
 		e.Shutdown()
 	}()

test/yaml-abs-paths.conf

@@ -0,0 +1,20 @@
+apiVersion: v1
+clusters:
+- cluster:
+    certificate-authority: {{PWD}}/test/basic.pem
+    server: https://127.0.0.1:6443
+  name: default-cluster
+contexts:
+- context:
+    cluster: default-cluster
+    namespace: default
+    user: default-auth
+  name: default-context
+current-context: default-context
+kind: Config
+preferences: {}
+users:
+- name: default-auth
+  user:
+    client-certificate: {{PWD}}/test/basic.pem
+    client-key: ./does-not-exist.pem