Add hotload_path_chksum_timestamp_seconds metric

Makefile

@@ -73,4 +73,4 @@ postgres-docker-compose-down:
 
 # Requires postgres db, see target postgres-docker-compose-up
 local-integration-tests:
-	go test -v -race -timeout=3m github.com/infobloxopen/hotload/integrationtests
+	HOTLOAD_PATH_CHKSUM_METRICS_ENABLE=true go test -v -race -timeout=3m github.com/infobloxopen/hotload/integrationtests

driver.go

@@ -192,7 +192,11 @@ func Strategies() []string {
 }
 
 func init() {
-	sql.Register("hotload", &hdriver{ctx: context.Background(), cgroup: make(map[string]*chanGroup)})
+	ctx := context.Background()
+	sql.Register("hotload", &hdriver{
+		ctx:    ctx,
+		cgroup: make(map[string]*chanGroup),
+	})
 }
 
 // hdriver is the hotload driver.

fsnotify/filewatcher.go

@@ -13,6 +13,7 @@ import (
 	"github.com/infobloxopen/hotload"
 	"github.com/infobloxopen/hotload/internal"
 	"github.com/infobloxopen/hotload/logger"
+	"github.com/infobloxopen/hotload/metrics"
 	"github.com/pkg/errors"
 )
 
@@ -174,6 +175,12 @@ func (s *Strategy) Watch(ctx context.Context, pth string, pathQry string) (value
 		if err := s.watcher.Add(pth); err != nil {
 			return "", nil, err
 		}
+		if err := metrics.AddToDefaultPathChksum(pth); err != nil {
+			if err != metrics.ErrDuplicatePath {
+				s.errlogf("fsnotify.Watch", "AddToDefaultPathChksum(%s) failed, err=%v", pth, err)
+				return "", nil, err
+			}
+		}
 		bs, err := s.readConfigFile(pth)
 		if err != nil {
 			s.watcher.Remove(pth)

go.mod

@@ -4,6 +4,7 @@ go 1.20
 
 require (
 	github.com/DATA-DOG/go-sqlmock v1.5.0
+	github.com/colega/gaugefuncvec v0.1.0
 	github.com/fsnotify/fsnotify v1.6.0
 	github.com/google/uuid v1.6.0
 	github.com/lib/pq v1.10.8

go.sum

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 golang.org/x/net v0.26.0/go.mod h1:5YKkiSynbBIh3p6iOc/vibscux0x38BZDkn8sCUPxHE=
+golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191204072324-ce4227a45e2e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200122134326-e047566fdf82/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20220908164124-27713097b956/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.22.0 h1:RI27ohtqKCnwULzJLqkv897zojh5/DwS/ENaMzUOaWI=
 golang.org/x/sys v0.22.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
@@ -85,12 +145,18 @@ golang.org/x/tools v0.0.0-20191108193012-7d206e10da11/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d h1:vU5i/LfpvrRCpgM/VPfJLg5KjxD3E+hfT1SH+d9zLwg=
 golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d/go.mod h1:aiJjzUbINMkxbQROHiO6hDPo2LHcIPhhQsa9DLh0yGk=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/protobuf v1.34.2 h1:6xV6lTsCfpGD21XK49h7MhtcApnLqkfYgPcdHftf6hg=
 google.golang.org/protobuf v1.34.2/go.mod h1:qYOHts0dSfpeUzUFpOMr/WGzszTmLH+DiWniOlNbLDw=
+gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
+gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

integrationtests/docker/docker-compose.yaml

@@ -8,6 +8,7 @@ services:
       - POSTGRES_USER=postgres
       - POSTGRES_PASSWORD=postgres
       - POSTGRES_DB=hldatabase
+      - HOTLOAD_PATH_CHKSUM_METRICS_ENABLE=true
     ports:
       - '5432:5432'
     volumes: 

integrationtests/helm/hotload-integration-tests/templates/tests/test-hotload.yaml

@@ -15,4 +15,6 @@ spec:
       env:
         - name: HOTLOAD_INTEGRATION_TEST_POSTGRES_HOST
           value: hotload-integration-tests-postgresql.default.svc.cluster.local
+        - name: HOTLOAD_PATH_CHKSUM_METRICS_ENABLE
+          value: "true"
   restartPolicy: Never

integrationtests/hotload_test.go

@@ -6,10 +6,13 @@ import (
 	"fmt"
 	"log"
 	"os"
+	"strings"
 	"time"
 
 	"github.com/infobloxopen/hotload"
 	_ "github.com/infobloxopen/hotload/fsnotify"
+	"github.com/infobloxopen/hotload/internal"
+	"github.com/infobloxopen/hotload/metrics"
 	"github.com/infobloxopen/hotload/modtime"
 	"github.com/lib/pq"
 	_ "github.com/lib/pq"
@@ -238,6 +241,13 @@ var _ = AfterSuite(func(ctx context.Context) {
 	}
 
 	//expectConnCountInDb(hlt, 3)
+
+	err = internal.CollectAndRegexpCompare(metrics.HotloadPathChksumTimestampSecondsGaugeFuncVec,
+		strings.NewReader(metrics.ExpectHotloadPathChksumTimestampSecondsPreamble+
+			fmt.Sprintf(metrics.ExpectHotloadPathChksumTimestampSecondsRegexp,
+				"/tmp/hotload_integration_test_dsn_config.txt")),
+		metrics.HotloadPathChksumTimestampSecondsName)
+	Expect(err).ShouldNot(HaveOccurred())
 }, NodeTimeout(240*time.Second))
 
 var _ = Describe("hotload integration tests - sanity", Serial, func() {