github.com/docker/docker-ce@v17.12.1-ce-rc2+incompatible/components/engine/integration-cli/docker_api_logs_test.go (about) 1 package main 2 3 import ( 4 "bufio" 5 "bytes" 6 "fmt" 7 "io" 8 "io/ioutil" 9 "net/http" 10 "strconv" 11 "strings" 12 "time" 13 14 "github.com/docker/docker/api/types" 15 "github.com/docker/docker/client" 16 "github.com/docker/docker/integration-cli/checker" 17 "github.com/docker/docker/integration-cli/request" 18 "github.com/docker/docker/pkg/stdcopy" 19 "github.com/go-check/check" 20 "golang.org/x/net/context" 21 ) 22 23 func (s *DockerSuite) TestLogsAPIWithStdout(c *check.C) { 24 out, _ := dockerCmd(c, "run", "-d", "-t", "busybox", "/bin/sh", "-c", "while true; do echo hello; sleep 1; done") 25 id := strings.TrimSpace(out) 26 c.Assert(waitRun(id), checker.IsNil) 27 28 type logOut struct { 29 out string 30 err error 31 } 32 33 chLog := make(chan logOut) 34 res, body, err := request.Get(fmt.Sprintf("/containers/%s/logs?follow=1&stdout=1×tamps=1", id)) 35 c.Assert(err, checker.IsNil) 36 c.Assert(res.StatusCode, checker.Equals, http.StatusOK) 37 38 go func() { 39 defer body.Close() 40 out, err := bufio.NewReader(body).ReadString('\n') 41 if err != nil { 42 chLog <- logOut{"", err} 43 return 44 } 45 chLog <- logOut{strings.TrimSpace(out), err} 46 }() 47 48 select { 49 case l := <-chLog: 50 c.Assert(l.err, checker.IsNil) 51 if !strings.HasSuffix(l.out, "hello") { 52 c.Fatalf("expected log output to container 'hello', but it does not") 53 } 54 case <-time.After(30 * time.Second): 55 c.Fatal("timeout waiting for logs to exit") 56 } 57 } 58 59 func (s *DockerSuite) TestLogsAPINoStdoutNorStderr(c *check.C) { 60 name := "logs_test" 61 dockerCmd(c, "run", "-d", "-t", "--name", name, "busybox", "/bin/sh") 62 cli, err := client.NewEnvClient() 63 c.Assert(err, checker.IsNil) 64 defer cli.Close() 65 66 _, err = cli.ContainerLogs(context.Background(), name, types.ContainerLogsOptions{}) 67 expected := "Bad parameters: you must choose at least one stream" 68 c.Assert(err.Error(), checker.Contains, expected) 69 } 70 71 // Regression test for #12704 72 func (s *DockerSuite) TestLogsAPIFollowEmptyOutput(c *check.C) { 73 name := "logs_test" 74 t0 := time.Now() 75 dockerCmd(c, "run", "-d", "-t", "--name", name, "busybox", "sleep", "10") 76 77 _, body, err := request.Get(fmt.Sprintf("/containers/%s/logs?follow=1&stdout=1&stderr=1&tail=all", name)) 78 t1 := time.Now() 79 c.Assert(err, checker.IsNil) 80 body.Close() 81 elapsed := t1.Sub(t0).Seconds() 82 if elapsed > 20.0 { 83 c.Fatalf("HTTP response was not immediate (elapsed %.1fs)", elapsed) 84 } 85 } 86 87 func (s *DockerSuite) TestLogsAPIContainerNotFound(c *check.C) { 88 name := "nonExistentContainer" 89 resp, _, err := request.Get(fmt.Sprintf("/containers/%s/logs?follow=1&stdout=1&stderr=1&tail=all", name)) 90 c.Assert(err, checker.IsNil) 91 c.Assert(resp.StatusCode, checker.Equals, http.StatusNotFound) 92 } 93 94 func (s *DockerSuite) TestLogsAPIUntilFutureFollow(c *check.C) { 95 testRequires(c, DaemonIsLinux) 96 97 name := "logsuntilfuturefollow" 98 dockerCmd(c, "run", "-d", "--name", name, "busybox", "/bin/sh", "-c", "while true; do date +%s; sleep 1; done") 99 c.Assert(waitRun(name), checker.IsNil) 100 101 untilSecs := 5 102 untilDur, err := time.ParseDuration(fmt.Sprintf("%ds", untilSecs)) 103 c.Assert(err, checker.IsNil) 104 until := daemonTime(c).Add(untilDur) 105 106 client, err := request.NewClient() 107 if err != nil { 108 c.Fatal(err) 109 } 110 111 cfg := types.ContainerLogsOptions{Until: until.Format(time.RFC3339Nano), Follow: true, ShowStdout: true, Timestamps: true} 112 reader, err := client.ContainerLogs(context.Background(), name, cfg) 113 c.Assert(err, checker.IsNil) 114 115 type logOut struct { 116 out string 117 err error 118 } 119 120 chLog := make(chan logOut) 121 122 go func() { 123 bufReader := bufio.NewReader(reader) 124 defer reader.Close() 125 for i := 0; i < untilSecs; i++ { 126 out, _, err := bufReader.ReadLine() 127 if err != nil { 128 if err == io.EOF { 129 return 130 } 131 chLog <- logOut{"", err} 132 return 133 } 134 135 chLog <- logOut{strings.TrimSpace(string(out)), err} 136 } 137 }() 138 139 for i := 0; i < untilSecs; i++ { 140 select { 141 case l := <-chLog: 142 c.Assert(l.err, checker.IsNil) 143 i, err := strconv.ParseInt(strings.Split(l.out, " ")[1], 10, 64) 144 c.Assert(err, checker.IsNil) 145 c.Assert(time.Unix(i, 0).UnixNano(), checker.LessOrEqualThan, until.UnixNano()) 146 case <-time.After(20 * time.Second): 147 c.Fatal("timeout waiting for logs to exit") 148 } 149 } 150 } 151 152 func (s *DockerSuite) TestLogsAPIUntil(c *check.C) { 153 name := "logsuntil" 154 dockerCmd(c, "run", "--name", name, "busybox", "/bin/sh", "-c", "for i in $(seq 1 3); do echo log$i; sleep 0.5; done") 155 156 client, err := request.NewClient() 157 if err != nil { 158 c.Fatal(err) 159 } 160 161 extractBody := func(c *check.C, cfg types.ContainerLogsOptions) []string { 162 reader, err := client.ContainerLogs(context.Background(), name, cfg) 163 c.Assert(err, checker.IsNil) 164 165 actualStdout := new(bytes.Buffer) 166 actualStderr := ioutil.Discard 167 _, err = stdcopy.StdCopy(actualStdout, actualStderr, reader) 168 c.Assert(err, checker.IsNil) 169 170 return strings.Split(actualStdout.String(), "\n") 171 } 172 173 // Get timestamp of second log line 174 allLogs := extractBody(c, types.ContainerLogsOptions{Timestamps: true, ShowStdout: true}) 175 t, err := time.Parse(time.RFC3339Nano, strings.Split(allLogs[1], " ")[0]) 176 c.Assert(err, checker.IsNil) 177 until := t.Format(time.RFC3339Nano) 178 179 // Get logs until the timestamp of second line, i.e. first two lines 180 logs := extractBody(c, types.ContainerLogsOptions{Timestamps: true, ShowStdout: true, Until: until}) 181 182 // Ensure log lines after cut-off are excluded 183 logsString := strings.Join(logs, "\n") 184 c.Assert(logsString, checker.Not(checker.Contains), "log3", check.Commentf("unexpected log message returned, until=%v", until)) 185 } 186 187 func (s *DockerSuite) TestLogsAPIUntilDefaultValue(c *check.C) { 188 name := "logsuntildefaultval" 189 dockerCmd(c, "run", "--name", name, "busybox", "/bin/sh", "-c", "for i in $(seq 1 3); do echo log$i; done") 190 191 client, err := request.NewClient() 192 if err != nil { 193 c.Fatal(err) 194 } 195 196 extractBody := func(c *check.C, cfg types.ContainerLogsOptions) []string { 197 reader, err := client.ContainerLogs(context.Background(), name, cfg) 198 c.Assert(err, checker.IsNil) 199 200 actualStdout := new(bytes.Buffer) 201 actualStderr := ioutil.Discard 202 _, err = stdcopy.StdCopy(actualStdout, actualStderr, reader) 203 c.Assert(err, checker.IsNil) 204 205 return strings.Split(actualStdout.String(), "\n") 206 } 207 208 // Get timestamp of second log line 209 allLogs := extractBody(c, types.ContainerLogsOptions{Timestamps: true, ShowStdout: true}) 210 211 // Test with default value specified and parameter omitted 212 defaultLogs := extractBody(c, types.ContainerLogsOptions{Timestamps: true, ShowStdout: true, Until: "0"}) 213 c.Assert(defaultLogs, checker.DeepEquals, allLogs) 214 }