Initial import
This commit is contained in:
commit
18e91937cd
4 changed files with 415 additions and 0 deletions
3
go.mod
Normal file
3
go.mod
Normal file
|
|
@ -0,0 +1,3 @@
|
|||
module bareos-zabbix-check
|
||||
|
||||
go 1.13
|
||||
152
main.go
Normal file
152
main.go
Normal file
|
|
@ -0,0 +1,152 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"flag"
|
||||
"fmt"
|
||||
"log"
|
||||
"os"
|
||||
"path"
|
||||
"time"
|
||||
)
|
||||
|
||||
const (
|
||||
bareosWorkDir = "/var/lib/bareos"
|
||||
bareosStateFile = "bareos-fd.9102.state"
|
||||
baculaWorkDir = "/var/lib/bacula"
|
||||
baculaStateFile = "bacula-fd.9102.state"
|
||||
spoolFile = "bareos-zabbix-check.spool"
|
||||
)
|
||||
|
||||
// We declare globally the variables that will hold the command line arguments
|
||||
var (
|
||||
verbose bool
|
||||
quiet bool
|
||||
stateFile string
|
||||
workDir string
|
||||
)
|
||||
|
||||
func main() {
|
||||
var (
|
||||
info os.FileInfo
|
||||
err error
|
||||
successfulJobs jobs
|
||||
errorJobs jobs
|
||||
spoolJobs jobs
|
||||
jobName string
|
||||
ts uint64
|
||||
now uint64
|
||||
errorString string
|
||||
missingString string
|
||||
)
|
||||
|
||||
// command line arguments parsing
|
||||
flag.BoolVar(&verbose, "v", false, "Activates verbose debugging output, defaults to false.")
|
||||
flag.BoolVar(&quiet, "q", false, "Suppress all output, suitable to force a silent update of the spool file.")
|
||||
flag.StringVar(&stateFile, "f", "", "Force the state file to use, defaults to "+bareosStateFile+" if it exists else "+baculaStateFile+".")
|
||||
flag.StringVar(&workDir, "w", "", "Force the work directory to use, defaults to "+bareosWorkDir+" if it exists else "+baculaWorkDir+".")
|
||||
flag.Parse()
|
||||
|
||||
// Determine the work directory to use.
|
||||
if workDir != "" {
|
||||
info, err = os.Stat(workDir)
|
||||
if os.IsNotExist(err) || !info.IsDir() {
|
||||
fmt.Printf("INFO Invalid work directory %s : it does not exist or is not a directory.\n", workDir)
|
||||
os.Exit(0)
|
||||
}
|
||||
} else {
|
||||
workDir = "/var/lib/bareos"
|
||||
info, err = os.Stat(workDir)
|
||||
if os.IsNotExist(err) || !info.IsDir() {
|
||||
workDir = "/var/lib/bacula"
|
||||
info, err := os.Stat(workDir)
|
||||
if os.IsNotExist(err) || !info.IsDir() {
|
||||
fmt.Println("INFO Could not find a suitable work directory. Is bareos or bacula installed?")
|
||||
os.Exit(0)
|
||||
}
|
||||
}
|
||||
}
|
||||
workDir = path.Clean(workDir)
|
||||
if verbose {
|
||||
log.Println("Setting work directory to ", workDir)
|
||||
}
|
||||
|
||||
// Finds the state file to parse
|
||||
if stateFile != "" {
|
||||
stateFile = path.Join(workDir, stateFile)
|
||||
info, err = os.Stat(stateFile)
|
||||
if os.IsNotExist(err) || info.IsDir() {
|
||||
fmt.Printf("INFO The state file %s does not exist.\n", stateFile)
|
||||
os.Exit(0)
|
||||
}
|
||||
} else {
|
||||
stateFile = path.Join(workDir, bareosStateFile)
|
||||
info, err = os.Stat(stateFile)
|
||||
if os.IsNotExist(err) || info.IsDir() {
|
||||
stateFile = path.Join(workDir, baculaStateFile)
|
||||
info, err = os.Stat(stateFile)
|
||||
if os.IsNotExist(err) || info.IsDir() {
|
||||
fmt.Println("INFO Could not find a suitable state file. Has a job ever run?")
|
||||
os.Exit(0)
|
||||
}
|
||||
}
|
||||
}
|
||||
if verbose {
|
||||
log.Println("Using state file ", stateFile)
|
||||
}
|
||||
|
||||
successfulJobs, errorJobs, err = parseStateFile()
|
||||
if err != nil {
|
||||
fmt.Print(err)
|
||||
os.Exit(0)
|
||||
}
|
||||
// We will check for errors in loading the spool file only if necessary. If all jobs ran successfully without errors in the state file and we manage to write
|
||||
// a new spool file without errors, then we will ignore any error here to avoid false positives during backup bootstrap
|
||||
spoolJobs, err = loadSpool()
|
||||
|
||||
// if we have jobs in the spool we merge this list with successfull jobs from the state file
|
||||
if err == nil {
|
||||
for jobName, ts = range spoolJobs {
|
||||
var (
|
||||
current uint64
|
||||
ok bool
|
||||
)
|
||||
current, ok = successfulJobs[jobName]
|
||||
if !ok || current < ts {
|
||||
successfulJobs[jobName] = ts
|
||||
}
|
||||
}
|
||||
}
|
||||
// we write this new spool
|
||||
if err2 := saveSpool(successfulJobs); err2 != nil {
|
||||
fmt.Printf("AVERAGE: Couldn't save spool : %s\n", err2)
|
||||
os.Exit(0)
|
||||
}
|
||||
|
||||
// We build the error string listing the jobs in error
|
||||
for jobName, ts = range errorJobs {
|
||||
if errorString == "" {
|
||||
errorString = fmt.Sprintf("errors: %s", jobName)
|
||||
} else {
|
||||
errorString = fmt.Sprintf("%s, %s", errorString, jobName)
|
||||
}
|
||||
}
|
||||
now = uint64(time.Now().Unix())
|
||||
// Next we check if all jobs ran recently and build the missing string
|
||||
for jobName, ts = range successfulJobs {
|
||||
if ts < now-24*3600 {
|
||||
if missingString == "" {
|
||||
missingString = fmt.Sprintf("missing: %s", jobName)
|
||||
} else {
|
||||
missingString = fmt.Sprintf("%s, %s", missingString, jobName)
|
||||
}
|
||||
}
|
||||
}
|
||||
if errorString != "" || missingString != "" {
|
||||
fmt.Printf("AVERAGE: %s %s", errorString, missingString)
|
||||
if err != nil {
|
||||
fmt.Printf(" additionnal errors: %s", err)
|
||||
}
|
||||
} else {
|
||||
fmt.Printf("OK")
|
||||
}
|
||||
}
|
||||
72
spool.go
Normal file
72
spool.go
Normal file
|
|
@ -0,0 +1,72 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"encoding/csv"
|
||||
"fmt"
|
||||
"log"
|
||||
"os"
|
||||
"path"
|
||||
"strconv"
|
||||
)
|
||||
|
||||
// jobs is a map that matches a job name string to its last successfull run timestamp
|
||||
type jobs map[string]uint64
|
||||
|
||||
func loadSpool() (entries jobs, err error) {
|
||||
var (
|
||||
file *os.File
|
||||
lines [][]string
|
||||
)
|
||||
// We read the spool
|
||||
file, err = os.Open(path.Join(workDir, spoolFile))
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("INFO Couldn't open spool file: %s", err)
|
||||
}
|
||||
defer file.Close()
|
||||
lines, err = csv.NewReader(file).ReadAll()
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("INFO Corrupted spool file : %s", err)
|
||||
}
|
||||
if verbose {
|
||||
log.Printf("Spool file content : %v\n", lines)
|
||||
}
|
||||
|
||||
entries = make(map[string]uint64)
|
||||
for _, line := range lines {
|
||||
var (
|
||||
i int
|
||||
)
|
||||
i, err = strconv.Atoi(line[1])
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("INFO Corrupted spool file : couldn't parse timestamp entry")
|
||||
}
|
||||
entries[line[0]] = uint64(i)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func saveSpool(entries jobs) (err error) {
|
||||
var (
|
||||
file *os.File
|
||||
lines [][]string
|
||||
jobName string
|
||||
ts uint64
|
||||
i int
|
||||
)
|
||||
file, err = os.Create(path.Join(workDir, spoolFile))
|
||||
if err != nil {
|
||||
return fmt.Errorf("INFO Couldn't open spool file for writing : %s", err)
|
||||
}
|
||||
defer file.Close()
|
||||
|
||||
lines = make([][]string, len(entries))
|
||||
i = 0
|
||||
for jobName, ts = range entries {
|
||||
lines[i] = make([]string, 2)
|
||||
lines[i][0] = jobName
|
||||
lines[i][1] = fmt.Sprintf("%d", ts)
|
||||
i++
|
||||
}
|
||||
err = csv.NewWriter(file).WriteAll(lines)
|
||||
return
|
||||
}
|
||||
188
state.go
Normal file
188
state.go
Normal file
|
|
@ -0,0 +1,188 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"encoding/binary"
|
||||
"fmt"
|
||||
"log"
|
||||
"os"
|
||||
"regexp"
|
||||
)
|
||||
|
||||
// stateFileHeader : A structure to hold the header of the state file. It is statically aligned for amd64 architecture
|
||||
type stateFileHeader struct {
|
||||
ID [14]byte
|
||||
_ int16
|
||||
Version int32
|
||||
_ int32
|
||||
LastJobsAddr uint64
|
||||
EndOfRecentJobResultsList uint64
|
||||
Reserved [19]uint64
|
||||
}
|
||||
|
||||
func (sfh stateFileHeader) String() string {
|
||||
return fmt.Sprintf("ID: \"%s\", Version: %d, LastJobsAddr: %d, EndOfRecentJobResultsList: %d", sfh.ID[:len(sfh.ID)-2], sfh.Version, sfh.EndOfRecentJobResultsList, sfh.Reserved)
|
||||
}
|
||||
|
||||
// jobEntry : A structure to hold a job result from the state file
|
||||
type jobEntry struct {
|
||||
Pad [16]byte
|
||||
Errors int32
|
||||
JobType int32
|
||||
JobStatus int32
|
||||
JobLevel int32
|
||||
JobID uint32
|
||||
VolSessionID uint32
|
||||
VolSessionTime uint32
|
||||
JobFiles uint32
|
||||
JobBytes uint64
|
||||
StartTime uint64
|
||||
EndTime uint64
|
||||
Job [maxNameLength]byte
|
||||
}
|
||||
|
||||
func (je jobEntry) String() string {
|
||||
var matches = jobNameRegex.FindSubmatchIndex(je.Job[:])
|
||||
var jobNameLen int
|
||||
if len(matches) >= 4 {
|
||||
jobNameLen = matches[3]
|
||||
}
|
||||
return fmt.Sprintf("Errors: %d, JobType: %c, JobStatus: %c, JobLevel: %c, JobID: %d, VolSessionID: %d, VolSessionTime: %d, JobFiles: %d, JobBytes: %d, StartTime: %d, EndTime: %d, Job: %s",
|
||||
je.Errors, je.JobType, je.JobStatus, je.JobLevel, je.JobID, je.VolSessionID, je.VolSessionTime, je.JobFiles, je.JobBytes, je.StartTime, je.EndTime, je.Job[:jobNameLen])
|
||||
}
|
||||
|
||||
const (
|
||||
// maxNameLength : the maximum length of a string, hard coded in bareos
|
||||
maxNameLength = 128
|
||||
// stateFileHeaderLength : the length of the state file header struct
|
||||
stateFileHeaderLength = 14 + 2 + 4 + 4 + 8 + 8 + 19*8
|
||||
// jobResultLength : the length of the job result struct
|
||||
jobResultLength = 16 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 8 + 8 + 8 + maxNameLength
|
||||
)
|
||||
|
||||
var jobNameRegex = regexp.MustCompilePOSIX(`^([-A-Za-z0-9_]+)\.[0-9]{4}-[0-9]{2}-[0-9]{2}.*`)
|
||||
|
||||
// readNextBytes : Reads the next "number" bytes from a "file", returns the number of bytes actually read as well as the bytes read
|
||||
func readNextBytes(file *os.File, number int) (int, []byte) {
|
||||
var bytes = make([]byte, number)
|
||||
|
||||
var n, err = file.Read(bytes)
|
||||
if err != nil {
|
||||
fmt.Printf("INFO Corrupted state file : file.Read failed in %s : %s\n", stateFile, err)
|
||||
}
|
||||
|
||||
return n, bytes
|
||||
}
|
||||
|
||||
func parseStateFile() (successfulJobs jobs, errorJobs jobs, err error) {
|
||||
var (
|
||||
n int
|
||||
stateFileHandle *os.File
|
||||
data []byte
|
||||
buffer *bytes.Buffer
|
||||
numberOfJobs uint32
|
||||
matches []int
|
||||
)
|
||||
// Open the state file
|
||||
stateFileHandle, err = os.Open(stateFile)
|
||||
if err != nil {
|
||||
return nil, nil, fmt.Errorf("INFO Couldn't open state file : %s", err)
|
||||
}
|
||||
defer stateFileHandle.Close()
|
||||
|
||||
// Parsing the state file header
|
||||
var header stateFileHeader
|
||||
n, data = readNextBytes(stateFileHandle, stateFileHeaderLength)
|
||||
if n != stateFileHeaderLength {
|
||||
return nil, nil, fmt.Errorf("INFO Corrupted state file : invalid header length in %s", stateFile)
|
||||
}
|
||||
buffer = bytes.NewBuffer(data)
|
||||
err = binary.Read(buffer, binary.LittleEndian, &header)
|
||||
if err != nil {
|
||||
return nil, nil, fmt.Errorf("INFO Corrupted state file : binary.Read failed on header in %s : %s", stateFile, err)
|
||||
}
|
||||
if verbose {
|
||||
log.Printf("Parsed header: %+s\n", header)
|
||||
}
|
||||
if id := string(header.ID[:len(header.ID)-1]); id != "Bareos State\n" && id != "Bacula State\n" {
|
||||
return nil, nil, fmt.Errorf("INFO Corrupted state file : Not a bareos or bacula state file %s", stateFile)
|
||||
}
|
||||
if header.Version != 4 {
|
||||
return nil, nil, fmt.Errorf("INFO Invalid state file : This script only supports bareos state file version 4, got %d", header.Version)
|
||||
}
|
||||
if header.LastJobsAddr == 0 {
|
||||
return nil, nil, fmt.Errorf("INFO No jobs exist in the state file")
|
||||
}
|
||||
|
||||
// We seek to the jobs position in the state file
|
||||
stateFileHandle.Seek(int64(header.LastJobsAddr), 0)
|
||||
|
||||
// We read how many jobs there are in the state file
|
||||
n, data = readNextBytes(stateFileHandle, 4)
|
||||
if n != 4 {
|
||||
return nil, nil, fmt.Errorf("INFO Corrupted state file : invalid numberOfJobs read length in %s", stateFile)
|
||||
}
|
||||
buffer = bytes.NewBuffer(data)
|
||||
err = binary.Read(buffer, binary.LittleEndian, &numberOfJobs)
|
||||
if err != nil {
|
||||
return nil, nil, fmt.Errorf("INFO Corrupted state file : binary.Read failed on numberOfJobs in %s : %s", stateFile, err)
|
||||
}
|
||||
if verbose {
|
||||
log.Printf("%d jobs found in state file\n", numberOfJobs)
|
||||
}
|
||||
|
||||
// We parse the job entries
|
||||
successfulJobs = make(map[string]uint64)
|
||||
errorJobs = make(map[string]uint64)
|
||||
for ; numberOfJobs > 0; numberOfJobs-- {
|
||||
var (
|
||||
jobResult jobEntry
|
||||
jobName string
|
||||
)
|
||||
n, data = readNextBytes(stateFileHandle, jobResultLength)
|
||||
if n != jobResultLength {
|
||||
return nil, nil, fmt.Errorf("INFO Corrupted state file : invalid job entry in %s", stateFile)
|
||||
}
|
||||
buffer = bytes.NewBuffer(data)
|
||||
err = binary.Read(buffer, binary.LittleEndian, &jobResult)
|
||||
if err != nil {
|
||||
return nil, nil, fmt.Errorf("INFO Corrupted state file : binary.Read failed on job entry in %s : %s", stateFile, err)
|
||||
}
|
||||
matches = jobNameRegex.FindSubmatchIndex(jobResult.Job[:])
|
||||
if len(matches) >= 4 {
|
||||
jobName = string(jobResult.Job[:matches[3]])
|
||||
} else {
|
||||
return nil, nil, fmt.Errorf("INFO Couldn't parse job name, this shouldn't happen : %s", jobResult.Job[:])
|
||||
}
|
||||
if verbose {
|
||||
log.Printf("Parsed job entry: %s\n", jobResult)
|
||||
}
|
||||
// If the job is of type backup (B == ascii 66)
|
||||
if jobResult.JobType == 66 {
|
||||
var (
|
||||
successExists bool
|
||||
errorExists bool
|
||||
currentSuccess uint64
|
||||
currentError uint64
|
||||
)
|
||||
currentSuccess, successExists = successfulJobs[jobName]
|
||||
currentError, errorExists = errorJobs[jobName]
|
||||
// If the job is of status success (T == ascii 84)
|
||||
if jobResult.JobStatus == 84 {
|
||||
// if there is an older entry in errorJobs we delete it
|
||||
if errorExists && jobResult.StartTime > currentError {
|
||||
delete(errorJobs, jobName)
|
||||
}
|
||||
// if there are no entries more recent in successfulJobs we add this one
|
||||
if !successExists || successExists && jobResult.StartTime > currentSuccess {
|
||||
successfulJobs[jobName] = jobResult.StartTime
|
||||
}
|
||||
} else {
|
||||
if !errorExists || jobResult.StartTime > currentError {
|
||||
errorJobs[jobName] = jobResult.StartTime
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
Loading…
Add table
Reference in a new issue