Added tests to the main package and completely reworked the code around that

zabbix/main.go

@@ -0,0 +1,104 @@
+package zabbix
+
+import (
+	"bareos-zabbix-check/job"
+	"bareos-zabbix-check/spool"
+	"bareos-zabbix-check/state"
+	"fmt"
+	"os"
+	"path/filepath"
+	"time"
+)
+
+const (
+	spoolFileName = "bareos-zabbix-check.spool"
+)
+
+var now = uint64(time.Now().Unix())
+
+// Main the true main function of this program
+func Main() string {
+	err := processFlags()
+	if err != nil {
+		return fmt.Sprintf("INFO Failed to init programm : %s", err)
+	}
+	// Open the state file
+	stateFile, err := os.Open(stateFileName)
+	if err != nil {
+		return fmt.Sprintf("INFO Could not open state file : %s", err)
+	}
+	defer stateFile.Close()
+	// parse the state file
+	header, err := state.ParseHeader(stateFile)
+	if err != nil {
+		return fmt.Sprintf("INFO Could not parse state file header : %s", err)
+	}
+	// seek to the job entries in the state file
+	offset, err := stateFile.Seek(int64(header.LastJobsAddr), 0)
+	if err != nil {
+		return fmt.Sprintf("INFO Couldn't seek to jobs position in state file : %s", err)
+	}
+	if uint64(offset) != header.LastJobsAddr {
+		return fmt.Sprint("INFO Truncated state file")
+	}
+	// Then parse the jobs in the state file
+	jobs, err := state.ParseJobs(stateFile)
+	if err != nil {
+		return fmt.Sprintf("INFO Could not parse jobs in state file : %s", err)
+	}
+
+	// We will check for errors in loading the spool file only at the end. 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
+	// Open the spool file
+	spoolFile, spoolErr := os.Open(filepath.Join(workDir, spoolFileName))
+	var spoolJobs []job.Job
+	if err == nil {
+		defer spoolFile.Close()
+		spoolJobs, spoolErr = spool.Parse(spoolFile)
+	}
+
+	jobs = job.KeepOldestOnly(append(jobs, spoolJobs...))
+
+	// we write this new spool
+	spoolFile, err = os.Create(filepath.Join(workDir, spoolFileName))
+	if err == nil {
+		defer spoolFile.Close()
+		err = spool.Serialize(spoolFile, jobs)
+	}
+	if err != nil {
+		return fmt.Sprintf("AVERAGE: Error saving the spool file : %s\n", err)
+	}
+
+	var (
+		errorString   string
+		missingString string
+	)
+	// We build the error strings
+	for i := 0; i < len(jobs); i++ {
+		job := jobs[i]
+		if job.Success {
+			if job.Timestamp < now-24*3600 {
+				if missingString == "" {
+					missingString = fmt.Sprintf("missing: %s", job.Name)
+				} else {
+					missingString = fmt.Sprintf("%s, %s", missingString, job.Name)
+				}
+			}
+		} else {
+			if errorString == "" {
+				errorString = fmt.Sprintf("errors: %s", job.Name)
+			} else {
+				errorString = fmt.Sprintf("%s, %s", errorString, job.Name)
+			}
+		}
+	}
+	// Finally we output
+	if errorString != "" || missingString != "" {
+		if spoolErr != nil {
+			return fmt.Sprintf("AVERAGE: %s %s %s", errorString, missingString, spoolErr)
+		}
+		return fmt.Sprintf("AVERAGE: %s %s", errorString, missingString)
+	}
+	return "OK"
+}