WIP: Building tests, figuring out what I want AlertAfter to do
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ba33071070
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061b0c980a
2
alert.go
2
alert.go
@ -54,7 +54,7 @@ func (alert *Alert) BuildTemplates() {
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)
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log.Printf("Template built: %v", alert.commandShellTemplate)
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} else {
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panic("No template provided for alert %s", alert.Name)
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log.Fatalf("No template provided for alert %s", alert.Name)
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}
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}
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@ -31,7 +31,7 @@ type Monitor struct {
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func (monitor Monitor) IsValid() bool {
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atLeastOneCommand := (monitor.CommandShell != "" || monitor.Command != nil)
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atMostOneCommand := (monitor.CommandShell == "" || monitor.Command == nil)
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return atLeastOneCommand && atMostOneCommand
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return atLeastOneCommand && atMostOneCommand && monitor.AlertAfter >= 0
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}
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// ShouldCheck returns a boolean indicating if the Monitor is ready to be
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@ -116,9 +116,12 @@ func (monitor *Monitor) failure() (notice *AlertNotice) {
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}
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failureCount := (monitor.failureCount - monitor.AlertAfter)
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log.Printf("Total fail %v, this fail %v", monitor.failureCount, failureCount)
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if monitor.AlertEvery > 0 {
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// Handle integer number of failures before alerting
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modVal := failureCount % monitor.AlertEvery
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log.Printf("Alert every > 0: Mod val: %v", modVal)
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if failureCount%monitor.AlertEvery == 0 {
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notice = monitor.createAlertNotice(false)
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}
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188
monitor_test.go
Normal file
188
monitor_test.go
Normal file
@ -0,0 +1,188 @@
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package main
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import (
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"log"
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"testing"
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"time"
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)
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// TestMonitorIsValid tests the Monitor.IsValid()
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func TestMonitorIsValid(t *testing.T) {
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cases := []struct {
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monitor Monitor
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expected bool
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name string
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}{
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{Monitor{Command: []string{"echo", "test"}}, true, "Command only"},
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{Monitor{CommandShell: "echo test"}, true, "CommandShell only"},
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{Monitor{}, false, "No commands"},
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{
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Monitor{Command: []string{"echo", "test"}, CommandShell: "echo test"},
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false,
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"Both commands",
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},
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{Monitor{AlertAfter: -1}, false, "Invalid alert threshold, -1"},
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{Monitor{AlertAfter: 0}, false, "Invalid alert threshold, 0"},
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}
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for _, c := range cases {
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actual := c.monitor.IsValid()
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if actual != c.expected {
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t.Errorf("IsValid(%v), expected=%t actual=%t", c.name, c.expected, actual)
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}
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}
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}
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// TestMonitorShouldCheck tests the Monitor.ShouldCheck()
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func TestMonitorShouldCheck(t *testing.T) {
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timeNow := time.Now()
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timeTenSecAgo := time.Now().Add(time.Second * -10)
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timeTwentySecAgo := time.Now().Add(time.Second * -20)
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cases := []struct {
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monitor Monitor
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expected bool
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name string
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}{
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{Monitor{}, true, "Empty"},
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{Monitor{lastCheck: timeNow, CheckInterval: 15}, false, "Just checked"},
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{Monitor{lastCheck: timeTenSecAgo, CheckInterval: 15}, false, "-10s"},
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{Monitor{lastCheck: timeTwentySecAgo, CheckInterval: 15}, true, "-20s"},
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}
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for _, c := range cases {
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actual := c.monitor.ShouldCheck()
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if actual != c.expected {
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t.Errorf("ShouldCheck(%v), expected=%t actual=%t", c.name, c.expected, actual)
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}
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}
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}
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// TestMonitorIsUp tests the Monitor.isUp()
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func TestMonitorIsUp(t *testing.T) {
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cases := []struct {
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monitor Monitor
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expected bool
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name string
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}{
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{Monitor{}, true, "Empty"},
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{Monitor{alertCount: 1}, false, "Has alert"},
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{Monitor{alertCount: -1}, false, "Negative alerts"},
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{Monitor{alertCount: 0}, true, "No alerts"},
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}
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for _, c := range cases {
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actual := c.monitor.isUp()
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if actual != c.expected {
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t.Errorf("isUp(%v), expected=%t actual=%t", c.name, c.expected, actual)
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}
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}
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}
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// TestMonitorSuccess tests the Monitor.success()
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func TestMonitorSuccess(t *testing.T) {
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cases := []struct {
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monitor Monitor
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expectNotice bool
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name string
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}{
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{Monitor{}, false, "Empty"},
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{Monitor{alertCount: 0}, false, "No alerts"},
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{Monitor{alertCount: 1}, true, "Has alert"},
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}
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for _, c := range cases {
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notice := c.monitor.success()
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hasNotice := (notice != nil)
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if hasNotice != c.expectNotice {
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t.Errorf("success(%v), expected=%t actual=%t", c.name, c.expectNotice, hasNotice)
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}
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}
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}
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// TestMonitorFailureAlertAfter tests that alerts will not trigger until
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// hitting the threshold provided by AlertAfter
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func TestMonitorFailureAlertAfter(t *testing.T) {
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cases := []struct {
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monitor Monitor
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expectNotice bool
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name string
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}{
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{Monitor{AlertAfter: 1}, true, "Empty"}, // Defaults to true because and AlertEvery default to 0
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// TODO: Update this if meaning of AlertEvery changes
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{Monitor{failureCount: 0, AlertAfter: 0, AlertEvery: 1}, true, "Alert after 0: first failure"},
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{Monitor{failureCount: 1, AlertAfter: 0, AlertEvery: 1}, true, "Alert after 0: second failure"},
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// TODO: This one probably shouldn't trigger an alert if AlertAfter is made to behave consistently
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{Monitor{failureCount: 0, AlertAfter: 1, AlertEvery: 1}, true, "Alert after 1: first failure"},
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{Monitor{failureCount: 1, AlertAfter: 1, AlertEvery: 1}, true, "Alert after 1: second failure"},
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{Monitor{failureCount: 0, AlertAfter: 20, AlertEvery: 1}, false, "Alert after 20: first failure"},
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{Monitor{failureCount: 19, AlertAfter: 20, AlertEvery: 1}, true, "Alert after 20: 20th failure"},
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{Monitor{failureCount: 20, AlertAfter: 20, AlertEvery: 1}, true, "Alert after 20: 21st failure"},
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}
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for _, c := range cases {
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log.Printf("Testing case %s", c.name)
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notice := c.monitor.failure()
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hasNotice := (notice != nil)
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if hasNotice != c.expectNotice {
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t.Errorf("failure(%v), expected=%t actual=%t", c.name, c.expectNotice, hasNotice)
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log.Printf("Case failed: %s", c.name)
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}
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log.Println("-----")
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}
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}
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// TestMonitorFailureAlertEvery tests that alerts will trigger
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// on the expected intervals
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func TestMonitorFailureAlertEvery(t *testing.T) {
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cases := []struct {
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monitor Monitor
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expectNotice bool
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name string
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}{
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/*
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TODO: Actually found a bug in original implementation. There is an inconsistency in the way AlertAfter is treated.
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For "First alert only" (ie. AlertEvery=0), it is the number of failures to ignore before alerting, so AlertAfter=1
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will ignore the first failure and alert on the second failure
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For other intervals (ie. AlertEvery=1), it is essentially indexed on one. Essentially making AlertAfter=1 trigger
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on the first failure.
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For usabilty, this should be consistent. Consistent with what though? minitor-py? Or itself? Dun dun duuuunnnnn!
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*/
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{Monitor{}, true, "Empty"}, // Defaults to true because AlertAfter and AlertEvery default to 0
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// Alert first time only, after 0
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{Monitor{failureCount: 0, AlertAfter: 0, AlertEvery: 0}, true, "Alert first time only after 0: first failure"},
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{Monitor{failureCount: 1, AlertAfter: 0, AlertEvery: 0}, false, "Alert first time only after 0: second failure"},
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// Alert first time only, after 1
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{Monitor{failureCount: 0, AlertAfter: 1, AlertEvery: 0}, false, "Alert first time only after 1: first failure"},
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{Monitor{failureCount: 1, AlertAfter: 1, AlertEvery: 0}, true, "Alert first time only after 1: second failure"},
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{Monitor{failureCount: 2, AlertAfter: 1, AlertEvery: 0}, false, "Alert first time only after 1: third failure"},
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{Monitor{failureCount: 3, AlertAfter: 1, AlertEvery: 0}, false, "Alert first time only after 1: fourth failure"},
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// Alert every time, after 0
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{Monitor{failureCount: 0, AlertAfter: 0, AlertEvery: 1}, true, "Alert every time after 0: first failure"},
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{Monitor{failureCount: 1, AlertAfter: 0, AlertEvery: 1}, true, "Alert every time after 0: second failure"},
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// Alert every time, after 1
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{Monitor{failureCount: 0, AlertAfter: 1, AlertEvery: 1}, false, "Alert every time after 1: first failure"},
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{Monitor{failureCount: 1, AlertAfter: 1, AlertEvery: 1}, true, "Alert every time after 1: second failure"},
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{Monitor{failureCount: 1, AlertAfter: 1, AlertEvery: 1}, true, "Alert every time after 1: third failure"},
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// Alert every other time
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{Monitor{failureCount: 0, AlertAfter: 0, AlertEvery: 2}, true, "Alert every other time after 0: first failure"},
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{Monitor{failureCount: 1, AlertAfter: 0, AlertEvery: 2}, false, "Alert every other time after 0: second failure"},
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{Monitor{failureCount: 2, AlertAfter: 0, AlertEvery: 2}, true, "Alert every other time after 0: third failure2"},
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{Monitor{failureCount: 3, AlertAfter: 0, AlertEvery: 2}, false, "Alert every other time after 0: fourth failure"},
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// Alert every other time, after 1
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{Monitor{failureCount: 0, AlertAfter: 1, AlertEvery: 2}, false, "Alert every other time after 1: first failure"},
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{Monitor{failureCount: 1, AlertAfter: 1, AlertEvery: 2}, true, "Alert every other time after 1: second failure"},
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{Monitor{failureCount: 2, AlertAfter: 1, AlertEvery: 2}, false, "Alert every other time after 1: third failure"},
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{Monitor{failureCount: 3, AlertAfter: 1, AlertEvery: 2}, true, "Alert every other time after 1: fourth failure"},
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}
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for _, c := range cases {
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notice := c.monitor.failure()
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hasNotice := (notice != nil)
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if hasNotice != c.expectNotice {
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t.Errorf("failure(%v), expected=%t actual=%t", c.name, c.expectNotice, hasNotice)
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}
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}
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}
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