Initial import of lib + certificate validity checker

plugin/plugin.go

@@ -0,0 +1,95 @@
+package plugin
+
+import (
+	"container/list"
+	"fmt"
+	"nocternity.net/monitoring/perfdata"
+	"os"
+	"strings"
+)
+
+type Status int
+
+const (
+	OK Status = iota
+	WARNING
+	ERROR
+	UNKNOWN
+)
+
+func (s Status) String() string {
+	return [...]string{"OK", "WARNING", "ERROR", "UNKNOWN"}[s]
+}
+
+type Plugin struct {
+	name      string
+	status    Status
+	message   string
+	extraText *list.List
+	perfData  map[string]perfdata.PerfData
+}
+
+func New(name string) *Plugin {
+	p := new(Plugin)
+	p.name = name
+	p.status = UNKNOWN
+	p.message = "no status set"
+	p.perfData = make(map[string]perfdata.PerfData)
+	return p
+}
+
+func (p *Plugin) SetState(status Status, message string) {
+	p.status = status
+	p.message = message
+	p.extraText = nil
+}
+
+func (p *Plugin) AddLine(line string) {
+	if p.extraText == nil {
+		p.extraText = list.New()
+	}
+	p.extraText.PushBack(line)
+}
+
+func (p *Plugin) AddLines(lines []string) {
+	for _, line := range lines {
+		p.AddLine(line)
+	}
+}
+
+func (p *Plugin) AddPerfData(pd perfdata.PerfData) {
+	_, exists := p.perfData[pd.Label]
+	if exists {
+		panic(fmt.Sprintf("duplicate performance data %s", pd.Label))
+	}
+	p.perfData[pd.Label] = pd
+}
+
+func (p *Plugin) Done() {
+	var sb strings.Builder
+	sb.WriteString(p.name)
+	sb.WriteString(" ")
+	sb.WriteString(p.status.String())
+	sb.WriteString(": ")
+	sb.WriteString(p.message)
+	if len(p.perfData) > 0 {
+		sb.WriteString(" | ")
+		needSep := false
+		for k := range p.perfData {
+			if needSep {
+				sb.WriteString(", ")
+			} else {
+				needSep = true
+			}
+			sb.WriteString(p.perfData[k].String())
+		}
+	}
+	if p.extraText != nil {
+		for em := p.extraText.Front(); em != nil; em = em.Next() {
+			sb.WriteString("\n")
+			sb.WriteString(em.Value.(string))
+		}
+	}
+	fmt.Println(sb.String())
+	os.Exit(int(p.status))
+}