mirror of https://github.com/hashicorp/consul
665 lines
17 KiB
Go
665 lines
17 KiB
Go
package agent
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import (
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"errors"
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"fmt"
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"log"
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"net"
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"net/http"
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"net/http/httptest"
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"os"
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"os/exec"
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"testing"
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"time"
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docker "github.com/fsouza/go-dockerclient"
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"github.com/hashicorp/consul/consul/structs"
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"github.com/hashicorp/consul/testutil"
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)
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type MockNotify struct {
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state map[string]string
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updates map[string]int
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output map[string]string
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}
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func (m *MockNotify) UpdateCheck(id, status, output string) {
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m.state[id] = status
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old := m.updates[id]
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m.updates[id] = old + 1
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m.output[id] = output
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}
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func expectStatus(t *testing.T, script, status string) {
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mock := &MockNotify{
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state: make(map[string]string),
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updates: make(map[string]int),
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output: make(map[string]string),
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}
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check := &CheckMonitor{
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Notify: mock,
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CheckID: "foo",
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Script: script,
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Interval: 10 * time.Millisecond,
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Logger: log.New(os.Stderr, "", log.LstdFlags),
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}
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check.Start()
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defer check.Stop()
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testutil.WaitForResult(func() (bool, error) {
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// Should have at least 2 updates
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if mock.updates["foo"] < 2 {
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return false, fmt.Errorf("should have 2 updates %v", mock.updates)
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}
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if mock.state["foo"] != status {
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return false, fmt.Errorf("should be %v %v", status, mock.state)
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}
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return true, nil
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}, func(err error) {
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t.Fatalf("err: %s", err)
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})
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}
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func TestCheckMonitor_Passing(t *testing.T) {
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expectStatus(t, "exit 0", structs.HealthPassing)
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}
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func TestCheckMonitor_Warning(t *testing.T) {
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expectStatus(t, "exit 1", structs.HealthWarning)
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}
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func TestCheckMonitor_Critical(t *testing.T) {
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expectStatus(t, "exit 2", structs.HealthCritical)
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}
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func TestCheckMonitor_BadCmd(t *testing.T) {
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expectStatus(t, "foobarbaz", structs.HealthCritical)
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}
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func TestCheckMonitor_RandomStagger(t *testing.T) {
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mock := &MockNotify{
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state: make(map[string]string),
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updates: make(map[string]int),
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output: make(map[string]string),
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}
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check := &CheckMonitor{
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Notify: mock,
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CheckID: "foo",
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Script: "exit 0",
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Interval: 25 * time.Millisecond,
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Logger: log.New(os.Stderr, "", log.LstdFlags),
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}
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check.Start()
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defer check.Stop()
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time.Sleep(50 * time.Millisecond)
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// Should have at least 1 update
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if mock.updates["foo"] < 1 {
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t.Fatalf("should have 1 or more updates %v", mock.updates)
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}
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if mock.state["foo"] != structs.HealthPassing {
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t.Fatalf("should be %v %v", structs.HealthPassing, mock.state)
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}
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}
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func TestCheckMonitor_LimitOutput(t *testing.T) {
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mock := &MockNotify{
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state: make(map[string]string),
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updates: make(map[string]int),
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output: make(map[string]string),
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}
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check := &CheckMonitor{
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Notify: mock,
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CheckID: "foo",
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Script: "od -N 81920 /dev/urandom",
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Interval: 25 * time.Millisecond,
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Logger: log.New(os.Stderr, "", log.LstdFlags),
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}
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check.Start()
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defer check.Stop()
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time.Sleep(50 * time.Millisecond)
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// Allow for extra bytes for the truncation message
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if len(mock.output["foo"]) > CheckBufSize+100 {
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t.Fatalf("output size is too long")
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}
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}
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func TestCheckTTL(t *testing.T) {
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mock := &MockNotify{
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state: make(map[string]string),
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updates: make(map[string]int),
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output: make(map[string]string),
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}
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check := &CheckTTL{
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Notify: mock,
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CheckID: "foo",
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TTL: 100 * time.Millisecond,
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Logger: log.New(os.Stderr, "", log.LstdFlags),
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}
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check.Start()
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defer check.Stop()
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time.Sleep(50 * time.Millisecond)
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check.SetStatus(structs.HealthPassing, "")
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if mock.updates["foo"] != 1 {
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t.Fatalf("should have 1 updates %v", mock.updates)
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}
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if mock.state["foo"] != structs.HealthPassing {
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t.Fatalf("should be passing %v", mock.state)
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}
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// Ensure we don't fail early
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time.Sleep(75 * time.Millisecond)
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if mock.updates["foo"] != 1 {
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t.Fatalf("should have 1 updates %v", mock.updates)
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}
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// Wait for the TTL to expire
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time.Sleep(75 * time.Millisecond)
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if mock.updates["foo"] != 2 {
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t.Fatalf("should have 2 updates %v", mock.updates)
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}
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if mock.state["foo"] != structs.HealthCritical {
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t.Fatalf("should be critical %v", mock.state)
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}
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}
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func mockHTTPServer(responseCode int) *httptest.Server {
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mux := http.NewServeMux()
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mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
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w.WriteHeader(responseCode)
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return
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})
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return httptest.NewServer(mux)
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}
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func expectHTTPStatus(t *testing.T, url string, status string) {
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mock := &MockNotify{
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state: make(map[string]string),
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updates: make(map[string]int),
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output: make(map[string]string),
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}
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check := &CheckHTTP{
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Notify: mock,
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CheckID: "foo",
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HTTP: url,
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Interval: 10 * time.Millisecond,
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Logger: log.New(os.Stderr, "", log.LstdFlags),
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}
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check.Start()
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defer check.Stop()
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time.Sleep(50 * time.Millisecond)
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// Should have at least 2 updates
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if mock.updates["foo"] < 2 {
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t.Fatalf("should have 2 updates %v", mock.updates)
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}
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if mock.state["foo"] != status {
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t.Fatalf("should be %v %v", status, mock.state)
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}
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}
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func TestCheckHTTPCritical(t *testing.T) {
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// var server *httptest.Server
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server := mockHTTPServer(150)
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fmt.Println(server.URL)
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expectHTTPStatus(t, server.URL, "critical")
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server.Close()
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// 2xx - 1
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server = mockHTTPServer(199)
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expectHTTPStatus(t, server.URL, "critical")
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server.Close()
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// 2xx + 1
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server = mockHTTPServer(300)
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expectHTTPStatus(t, server.URL, "critical")
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server.Close()
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server = mockHTTPServer(400)
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expectHTTPStatus(t, server.URL, "critical")
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server.Close()
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server = mockHTTPServer(500)
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expectHTTPStatus(t, server.URL, "critical")
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server.Close()
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}
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func TestCheckHTTPPassing(t *testing.T) {
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var server *httptest.Server
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server = mockHTTPServer(200)
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expectHTTPStatus(t, server.URL, "passing")
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server.Close()
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server = mockHTTPServer(201)
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expectHTTPStatus(t, server.URL, "passing")
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server.Close()
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server = mockHTTPServer(250)
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expectHTTPStatus(t, server.URL, "passing")
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server.Close()
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server = mockHTTPServer(299)
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expectHTTPStatus(t, server.URL, "passing")
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server.Close()
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}
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func TestCheckHTTPWarning(t *testing.T) {
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server := mockHTTPServer(429)
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expectHTTPStatus(t, server.URL, "warning")
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server.Close()
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}
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func mockSlowHTTPServer(responseCode int, sleep time.Duration) *httptest.Server {
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mux := http.NewServeMux()
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mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
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time.Sleep(sleep)
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w.WriteHeader(responseCode)
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return
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})
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return httptest.NewServer(mux)
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}
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func TestCheckHTTPTimeout(t *testing.T) {
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server := mockSlowHTTPServer(200, 10*time.Millisecond)
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defer server.Close()
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mock := &MockNotify{
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state: make(map[string]string),
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updates: make(map[string]int),
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output: make(map[string]string),
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}
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check := &CheckHTTP{
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Notify: mock,
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CheckID: "bar",
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HTTP: server.URL,
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Timeout: 5 * time.Millisecond,
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Interval: 10 * time.Millisecond,
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Logger: log.New(os.Stderr, "", log.LstdFlags),
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}
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check.Start()
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defer check.Stop()
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time.Sleep(50 * time.Millisecond)
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// Should have at least 2 updates
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if mock.updates["bar"] < 2 {
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t.Fatalf("should have at least 2 updates %v", mock.updates)
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}
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if mock.state["bar"] != "critical" {
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t.Fatalf("should be critical %v", mock.state)
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}
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}
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func TestCheckHTTP_disablesKeepAlives(t *testing.T) {
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check := &CheckHTTP{
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CheckID: "foo",
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HTTP: "http://foo.bar/baz",
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Interval: 10 * time.Second,
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Logger: log.New(os.Stderr, "", log.LstdFlags),
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}
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check.Start()
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defer check.Stop()
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if !check.httpClient.Transport.(*http.Transport).DisableKeepAlives {
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t.Fatalf("should have disabled keepalives")
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}
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}
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func mockTCPServer(network string) net.Listener {
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var (
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addr string
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)
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if network == `tcp6` {
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addr = `[::1]:0`
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} else {
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addr = `127.0.0.1:0`
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}
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listener, err := net.Listen(network, addr)
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if err != nil {
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panic(err)
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}
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return listener
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}
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func expectTCPStatus(t *testing.T, tcp string, status string) {
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mock := &MockNotify{
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state: make(map[string]string),
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updates: make(map[string]int),
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output: make(map[string]string),
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}
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check := &CheckTCP{
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Notify: mock,
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CheckID: "foo",
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TCP: tcp,
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Interval: 10 * time.Millisecond,
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Logger: log.New(os.Stderr, "", log.LstdFlags),
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}
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check.Start()
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defer check.Stop()
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time.Sleep(50 * time.Millisecond)
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// Should have at least 2 updates
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if mock.updates["foo"] < 2 {
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t.Fatalf("should have 2 updates %v", mock.updates)
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}
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if mock.state["foo"] != status {
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t.Fatalf("should be %v %v", status, mock.state)
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}
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}
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func TestCheckTCPCritical(t *testing.T) {
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var (
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tcpServer net.Listener
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)
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tcpServer = mockTCPServer(`tcp`)
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expectTCPStatus(t, `127.0.0.1:0`, "critical")
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tcpServer.Close()
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}
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func TestCheckTCPPassing(t *testing.T) {
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var (
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tcpServer net.Listener
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)
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tcpServer = mockTCPServer(`tcp`)
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expectTCPStatus(t, tcpServer.Addr().String(), "passing")
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tcpServer.Close()
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tcpServer = mockTCPServer(`tcp6`)
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expectTCPStatus(t, tcpServer.Addr().String(), "passing")
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tcpServer.Close()
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}
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// A fake docker client to test happy path scenario
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type fakeDockerClientWithNoErrors struct {
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}
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func (d *fakeDockerClientWithNoErrors) CreateExec(opts docker.CreateExecOptions) (*docker.Exec, error) {
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return &docker.Exec{ID: "123"}, nil
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}
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func (d *fakeDockerClientWithNoErrors) StartExec(id string, opts docker.StartExecOptions) error {
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fmt.Fprint(opts.OutputStream, "output")
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return nil
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}
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func (d *fakeDockerClientWithNoErrors) InspectExec(id string) (*docker.ExecInspect, error) {
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return &docker.ExecInspect{
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ID: "123",
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ExitCode: 0,
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}, nil
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}
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// A fake docker client to test truncation of output
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type fakeDockerClientWithLongOutput struct {
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}
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func (d *fakeDockerClientWithLongOutput) CreateExec(opts docker.CreateExecOptions) (*docker.Exec, error) {
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return &docker.Exec{ID: "123"}, nil
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}
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func (d *fakeDockerClientWithLongOutput) StartExec(id string, opts docker.StartExecOptions) error {
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b, _ := exec.Command("od", "-N", "81920", "/dev/urandom").Output()
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fmt.Fprint(opts.OutputStream, string(b))
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return nil
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}
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func (d *fakeDockerClientWithLongOutput) InspectExec(id string) (*docker.ExecInspect, error) {
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return &docker.ExecInspect{
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ID: "123",
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ExitCode: 0,
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}, nil
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}
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// A fake docker client to test non-zero exit codes from exec invocation
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type fakeDockerClientWithExecNonZeroExitCode struct {
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}
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func (d *fakeDockerClientWithExecNonZeroExitCode) CreateExec(opts docker.CreateExecOptions) (*docker.Exec, error) {
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return &docker.Exec{ID: "123"}, nil
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}
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func (d *fakeDockerClientWithExecNonZeroExitCode) StartExec(id string, opts docker.StartExecOptions) error {
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return nil
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}
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func (d *fakeDockerClientWithExecNonZeroExitCode) InspectExec(id string) (*docker.ExecInspect, error) {
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return &docker.ExecInspect{
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ID: "123",
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ExitCode: 127,
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}, nil
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}
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// A fake docker client to test exit code which result into Warning
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type fakeDockerClientWithExecExitCodeOne struct {
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}
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func (d *fakeDockerClientWithExecExitCodeOne) CreateExec(opts docker.CreateExecOptions) (*docker.Exec, error) {
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return &docker.Exec{ID: "123"}, nil
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}
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func (d *fakeDockerClientWithExecExitCodeOne) StartExec(id string, opts docker.StartExecOptions) error {
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fmt.Fprint(opts.OutputStream, "output")
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return nil
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}
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func (d *fakeDockerClientWithExecExitCodeOne) InspectExec(id string) (*docker.ExecInspect, error) {
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return &docker.ExecInspect{
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ID: "123",
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ExitCode: 1,
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}, nil
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}
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// A fake docker client to simulate create exec failing
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type fakeDockerClientWithCreateExecFailure struct {
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}
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func (d *fakeDockerClientWithCreateExecFailure) CreateExec(opts docker.CreateExecOptions) (*docker.Exec, error) {
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return nil, errors.New("Exec Creation Failed")
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}
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func (d *fakeDockerClientWithCreateExecFailure) StartExec(id string, opts docker.StartExecOptions) error {
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return errors.New("Exec doesn't exist")
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}
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func (d *fakeDockerClientWithCreateExecFailure) InspectExec(id string) (*docker.ExecInspect, error) {
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return nil, errors.New("Exec doesn't exist")
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}
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// A fake docker client to simulate start exec failing
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type fakeDockerClientWithStartExecFailure struct {
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}
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func (d *fakeDockerClientWithStartExecFailure) CreateExec(opts docker.CreateExecOptions) (*docker.Exec, error) {
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return &docker.Exec{ID: "123"}, nil
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}
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func (d *fakeDockerClientWithStartExecFailure) StartExec(id string, opts docker.StartExecOptions) error {
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return errors.New("Couldn't Start Exec")
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}
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func (d *fakeDockerClientWithStartExecFailure) InspectExec(id string) (*docker.ExecInspect, error) {
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return nil, errors.New("Exec doesn't exist")
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}
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// A fake docker client to test exec info query failures
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type fakeDockerClientWithExecInfoErrors struct {
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}
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func (d *fakeDockerClientWithExecInfoErrors) CreateExec(opts docker.CreateExecOptions) (*docker.Exec, error) {
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return &docker.Exec{ID: "123"}, nil
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}
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func (d *fakeDockerClientWithExecInfoErrors) StartExec(id string, opts docker.StartExecOptions) error {
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return nil
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}
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func (d *fakeDockerClientWithExecInfoErrors) InspectExec(id string) (*docker.ExecInspect, error) {
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return nil, errors.New("Unable to query exec info")
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}
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func expectDockerCheckStatus(t *testing.T, dockerClient DockerClient, status string, output string) {
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mock := &MockNotify{
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state: make(map[string]string),
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updates: make(map[string]int),
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output: make(map[string]string),
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}
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check := &CheckDocker{
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Notify: mock,
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CheckID: "foo",
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Script: "/health.sh",
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DockerContainerID: "54432bad1fc7",
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Shell: "/bin/sh",
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Interval: 10 * time.Millisecond,
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Logger: log.New(os.Stderr, "", log.LstdFlags),
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dockerClient: dockerClient,
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}
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check.Start()
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defer check.Stop()
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time.Sleep(50 * time.Millisecond)
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// Should have at least 2 updates
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if mock.updates["foo"] < 2 {
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t.Fatalf("should have 2 updates %v", mock.updates)
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}
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|
|
if mock.state["foo"] != status {
|
|
t.Fatalf("should be %v %v", status, mock.state)
|
|
}
|
|
|
|
if mock.output["foo"] != output {
|
|
t.Fatalf("should be %v %v", output, mock.output)
|
|
}
|
|
}
|
|
|
|
func TestDockerCheckWhenExecReturnsSuccessExitCode(t *testing.T) {
|
|
expectDockerCheckStatus(t, &fakeDockerClientWithNoErrors{}, "passing", "output")
|
|
}
|
|
|
|
func TestDockerCheckWhenExecCreationFails(t *testing.T) {
|
|
expectDockerCheckStatus(t, &fakeDockerClientWithCreateExecFailure{}, "critical", "Unable to create Exec, error: Exec Creation Failed")
|
|
}
|
|
|
|
func TestDockerCheckWhenExitCodeIsNonZero(t *testing.T) {
|
|
expectDockerCheckStatus(t, &fakeDockerClientWithExecNonZeroExitCode{}, "critical", "")
|
|
}
|
|
|
|
func TestDockerCheckWhenExitCodeIsone(t *testing.T) {
|
|
expectDockerCheckStatus(t, &fakeDockerClientWithExecExitCodeOne{}, "warning", "output")
|
|
}
|
|
|
|
func TestDockerCheckWhenExecStartFails(t *testing.T) {
|
|
expectDockerCheckStatus(t, &fakeDockerClientWithStartExecFailure{}, "critical", "Unable to start Exec: Couldn't Start Exec")
|
|
}
|
|
|
|
func TestDockerCheckWhenExecInfoFails(t *testing.T) {
|
|
expectDockerCheckStatus(t, &fakeDockerClientWithExecInfoErrors{}, "critical", "Unable to inspect Exec: Unable to query exec info")
|
|
}
|
|
|
|
func TestDockerCheckDefaultToSh(t *testing.T) {
|
|
os.Setenv("SHELL", "")
|
|
mock := &MockNotify{
|
|
state: make(map[string]string),
|
|
updates: make(map[string]int),
|
|
output: make(map[string]string),
|
|
}
|
|
check := &CheckDocker{
|
|
Notify: mock,
|
|
CheckID: "foo",
|
|
Script: "/health.sh",
|
|
DockerContainerID: "54432bad1fc7",
|
|
Interval: 10 * time.Millisecond,
|
|
Logger: log.New(os.Stderr, "", log.LstdFlags),
|
|
dockerClient: &fakeDockerClientWithNoErrors{},
|
|
}
|
|
check.Start()
|
|
defer check.Stop()
|
|
|
|
time.Sleep(50 * time.Millisecond)
|
|
if check.Shell != "/bin/sh" {
|
|
t.Fatalf("Shell should be: %v , actual: %v", "/bin/sh", check.Shell)
|
|
}
|
|
}
|
|
|
|
func TestDockerCheckUseShellFromEnv(t *testing.T) {
|
|
mock := &MockNotify{
|
|
state: make(map[string]string),
|
|
updates: make(map[string]int),
|
|
output: make(map[string]string),
|
|
}
|
|
os.Setenv("SHELL", "/bin/bash")
|
|
check := &CheckDocker{
|
|
Notify: mock,
|
|
CheckID: "foo",
|
|
Script: "/health.sh",
|
|
DockerContainerID: "54432bad1fc7",
|
|
Interval: 10 * time.Millisecond,
|
|
Logger: log.New(os.Stderr, "", log.LstdFlags),
|
|
dockerClient: &fakeDockerClientWithNoErrors{},
|
|
}
|
|
check.Start()
|
|
defer check.Stop()
|
|
|
|
time.Sleep(50 * time.Millisecond)
|
|
if check.Shell != "/bin/bash" {
|
|
t.Fatalf("Shell should be: %v , actual: %v", "/bin/bash", check.Shell)
|
|
}
|
|
os.Setenv("SHELL", "")
|
|
}
|
|
|
|
func TestDockerCheckTruncateOutput(t *testing.T) {
|
|
mock := &MockNotify{
|
|
state: make(map[string]string),
|
|
updates: make(map[string]int),
|
|
output: make(map[string]string),
|
|
}
|
|
check := &CheckDocker{
|
|
Notify: mock,
|
|
CheckID: "foo",
|
|
Script: "/health.sh",
|
|
DockerContainerID: "54432bad1fc7",
|
|
Shell: "/bin/sh",
|
|
Interval: 10 * time.Millisecond,
|
|
Logger: log.New(os.Stderr, "", log.LstdFlags),
|
|
dockerClient: &fakeDockerClientWithLongOutput{},
|
|
}
|
|
check.Start()
|
|
defer check.Stop()
|
|
|
|
time.Sleep(50 * time.Millisecond)
|
|
|
|
// Allow for extra bytes for the truncation message
|
|
if len(mock.output["foo"]) > CheckBufSize+100 {
|
|
t.Fatalf("output size is too long")
|
|
}
|
|
|
|
}
|