func lastUpdate(ctx *cli.Context) {
filename, err := getFilenameArg(ctx)
if err != nil {
showError(ctx, err)
return
}
rrd, err := cdata.OpenRrdRawFile(filename, true)
if err != nil {
fmt.Fprintln(ctx.App.Writer, err)
return
}
defer rrd.Close()
for _, datasource := range rrd.Datasources {
fmt.Fprintf(ctx.App.Writer, " %s", datasource.GetName())
}
fmt.Fprint(ctx.App.Writer, "\n\n")
fmt.Fprintf(ctx.App.Writer, "%10d:", rrd.LastUpdate.Unix())
for _, datasource := range rrd.Datasources {
fmt.Fprintf(ctx.App.Writer, " %s", datasource.GetLastValue())
}
fmt.Fprint(ctx.App.Writer, "\n")
}
func updateCommand(ctx *cli.Context) {
filename, err := getFilenameArg(ctx)
if err != nil {
showError(ctx, err)
return
}
rrd, err := cdata.OpenRrdRawFile(filename, false)
if err != nil {
showError(ctx, err)
return
}
defer rrd.Close()
timestamp, values, err := parseUpdateArg(ctx, rrd)
if err != nil {
showError(ctx, err)
return
}
if err := rrd.Update(timestamp, values); err != nil {
showError(ctx, err)
return
}
}
func last(ctx *cli.Context) {
filename, err := getFilenameArg(ctx)
if err != nil {
showError(ctx, err)
return
}
rrd, err := cdata.OpenRrdRawFile(filename, true)
if err != nil {
fmt.Fprintln(ctx.App.Writer, err)
return
}
defer rrd.Close()
fmt.Fprintf(ctx.App.Writer, "%d\n", rrd.LastUpdate.Unix())
}
func runDumpCommand(rrdFileName string) (string, error) {
rrd, err := cdata.OpenRrdRawFile(rrdFileName, true)
if err != nil {
return "", err
}
defer rrd.Close()
buffer := bytes.NewBufferString("")
xmlDumper, err := dump.NewXmlOutput(buffer, true)
if err != nil {
return "", err
}
if err := rrd.DumpTo(xmlDumper); err != nil {
return "", err
}
return buffer.String(), nil
}
func dumpCommand(ctx *cli.Context) {
filename, err := getFilenameArg(ctx)
if err != nil {
showError(ctx, err)
return
}
rrd, err := cdata.OpenRrdRawFile(filename, true)
if err != nil {
fmt.Fprintln(ctx.App.Writer, err)
return
}
defer rrd.Close()
xmlDumper, err := dump.NewXmlOutput(ctx.App.Writer, true)
if err != nil {
fmt.Fprintln(ctx.App.Writer, err)
return
}
if err := rrd.DumpTo(xmlDumper); err != nil {
fmt.Fprintln(ctx.App.Writer, err)
return
}
}
func TestUpdateCompatibility(t *testing.T) {
rrdtool, err := findRrdTool()
if err != nil {
t.Skipf("rrdtool not found: %s", err.Error())
return
}
runUpdateCommand := func(filename string, timestamp time.Time, values ...string) error {
rrd, err := cdata.OpenRrdRawFile(filename, false)
if err != nil {
return err
}
defer rrd.Close()
return rrd.Update(timestamp, values)
}
Convey("Given minimal rrdfile with 5m step and 1 pdp per cdp", t, func() {
tempDir := os.TempDir()
rrdFileName := filepath.Join(tempDir, fmt.Sprintf("comp_update1-%d.rrd", time.Now().UnixNano()))
defer os.Remove(rrdFileName)
start := 1455218381
So(rrdtool.create(
rrdFileName,
strconv.Itoa(start),
"300",
"DS:watts:GAUGE:300:0:100000",
"DS:counter:COUNTER:300:0:10000",
"RRA:AVERAGE:0.5:1:24",
"RRA:MIN:0.5:1:24",
"RRA:MAX:0.5:1:24",
"RRA:LAST:0.5:1:24",
), ShouldBeNil)
Convey("When values are added in stepsize", func() {
rrdFileNameCopy := filepath.Join(tempDir, fmt.Sprintf("comp_update1-copy-%d.rrd", time.Now().UnixNano()))
defer os.Remove(rrdFileNameCopy)
for i := 1; i < 10; i++ {
copyFile(rrdFileName, rrdFileNameCopy)
So(rrdtool.update(
rrdFileName,
fmt.Sprintf("%d:%d:%d", 300*i+start, i*100+5, i*200+10),
), ShouldBeNil)
err := runUpdateCommand(rrdFileNameCopy, time.Unix(int64(300*i+start), 0), strconv.Itoa(i*100+5), strconv.Itoa(i*200+10))
So(err, ShouldBeNil)
So(rrdFileNameCopy, shouldHaveSameContentAs, rrdFileName)
}
})
Convey("When values are added with gaps", func() {
rrdFileNameCopy := filepath.Join(tempDir, fmt.Sprintf("comp_update1-copy-%d.rrd", time.Now().UnixNano()))
defer os.Remove(rrdFileNameCopy)
timestamp := int64(start + 400)
for i := 0; i < 20; i++ {
copyFile(rrdFileName, rrdFileNameCopy)
So(rrdtool.update(
rrdFileName,
fmt.Sprintf("%d:%d:%d", timestamp, i*100+5, i*200+10),
), ShouldBeNil)
err := runUpdateCommand(rrdFileNameCopy, time.Unix(timestamp, 0), strconv.Itoa(i*100+5), strconv.Itoa(i*200+10))
So(err, ShouldBeNil)
So(rrdFileNameCopy, shouldHaveSameContentAs, rrdFileName)
if i%4 < 3 {
timestamp += 200
} else {
timestamp += 400
}
}
})
})
Convey("Given minimal rrdfile with 5m step", t, func() {
tempDir := os.TempDir()
rrdFileName := filepath.Join(tempDir, fmt.Sprintf("comp_update2-%d.rrd", time.Now().UnixNano()))
defer os.Remove(rrdFileName)
start := 1455218381
So(rrdtool.create(
rrdFileName,
strconv.Itoa(start),
"300",
"DS:watts:GAUGE:300:0:100000",
"RRA:AVERAGE:0.5:12:24",
"RRA:MIN:0.5:12:24",
"RRA:MAX:0.5:12:24",
"RRA:LAST:0.5:12:24",
), ShouldBeNil)
Convey("When values are added within stepsize", func() {
rrdFileNameCopy := filepath.Join(tempDir, fmt.Sprintf("comp_update2-copy-%d.rrd", time.Now().UnixNano()))
defer os.Remove(rrdFileNameCopy)
for i := 1; i < 5; i++ {
copyFile(rrdFileName, rrdFileNameCopy)
So(rrdtool.update(
rrdFileName,
fmt.Sprintf("%d:%d", i+start, i*100+5),
), ShouldBeNil)
err := runUpdateCommand(rrdFileNameCopy, time.Unix(int64(i+start), 0), strconv.Itoa(i*100+5))
So(err, ShouldBeNil)
So(rrdFileNameCopy, shouldHaveSameContentAs, rrdFileName)
}
})
})
Convey("Given minimal rrdfile with 5m step and 2 pdp per cdp", t, func() {
tempDir := os.TempDir()
rrdFileName := filepath.Join(tempDir, fmt.Sprintf("comp_update3-%d.rrd", time.Now().UnixNano()))
defer os.Remove(rrdFileName)
start := 1455218381
So(rrdtool.create(
rrdFileName,
strconv.Itoa(start),
"300",
"DS:watts:GAUGE:300:0:100000",
"RRA:AVERAGE:0.5:2:24",
"RRA:MIN:0.5:2:24",
"RRA:MAX:0.5:2:24",
"RRA:LAST:0.5:2:24",
), ShouldBeNil)
Convey("When values are added in stepsize", func() {
rrdFileNameCopy := filepath.Join(tempDir, fmt.Sprintf("comp_update3-copy-%d.rrd", time.Now().UnixNano()))
defer os.Remove(rrdFileNameCopy)
for i := 1; i < 10; i++ {
copyFile(rrdFileName, rrdFileNameCopy)
So(rrdtool.update(
rrdFileName,
fmt.Sprintf("%d:%d", 300*i+start, i*100+5),
), ShouldBeNil)
err := runUpdateCommand(rrdFileNameCopy, time.Unix(int64(300*i+start), 0), strconv.Itoa(i*100+5))
So(err, ShouldBeNil)
So(rrdFileNameCopy, shouldHaveSameContentAs, rrdFileName)
}
})
Convey("When values are added with gaps", func() {
rrdFileNameCopy := filepath.Join(tempDir, fmt.Sprintf("comp_update3-copy-%d.rrd", time.Now().UnixNano()))
defer os.Remove(rrdFileNameCopy)
timestamp := int64(start + 400)
for i := 0; i < 20; i++ {
copyFile(rrdFileName, rrdFileNameCopy)
So(rrdtool.update(
rrdFileName,
fmt.Sprintf("%d:%d", timestamp, i*100+5),
), ShouldBeNil)
err := runUpdateCommand(rrdFileNameCopy, time.Unix(timestamp, 0), strconv.Itoa(i*100+5))
So(err, ShouldBeNil)
So(rrdFileNameCopy, shouldHaveSameContentAs, rrdFileName)
if i%4 < 3 {
timestamp += 200
} else {
timestamp += 400
}
}
})
})
}