github.com/zhouyu0/docker-note@v0.0.0-20190722021225-b8d3825084db/client/service_logs_test.go (about)

     1  package client // import "github.com/docker/docker/client"
     2  
     3  import (
     4  	"bytes"
     5  	"context"
     6  	"fmt"
     7  	"io"
     8  	"io/ioutil"
     9  	"log"
    10  	"net/http"
    11  	"os"
    12  	"strings"
    13  	"testing"
    14  	"time"
    15  
    16  	"github.com/docker/docker/api/types"
    17  	"gotest.tools/assert"
    18  	is "gotest.tools/assert/cmp"
    19  )
    20  
    21  func TestServiceLogsError(t *testing.T) {
    22  	client := &Client{
    23  		client: newMockClient(errorMock(http.StatusInternalServerError, "Server error")),
    24  	}
    25  	_, err := client.ServiceLogs(context.Background(), "service_id", types.ContainerLogsOptions{})
    26  	assert.Check(t, is.Error(err, "Error response from daemon: Server error"))
    27  	_, err = client.ServiceLogs(context.Background(), "service_id", types.ContainerLogsOptions{
    28  		Since: "2006-01-02TZ",
    29  	})
    30  	assert.Check(t, is.ErrorContains(err, `parsing time "2006-01-02TZ"`))
    31  }
    32  
    33  func TestServiceLogs(t *testing.T) {
    34  	expectedURL := "/services/service_id/logs"
    35  	cases := []struct {
    36  		options             types.ContainerLogsOptions
    37  		expectedQueryParams map[string]string
    38  		expectedError       string
    39  	}{
    40  		{
    41  			expectedQueryParams: map[string]string{
    42  				"tail": "",
    43  			},
    44  		},
    45  		{
    46  			options: types.ContainerLogsOptions{
    47  				Tail: "any",
    48  			},
    49  			expectedQueryParams: map[string]string{
    50  				"tail": "any",
    51  			},
    52  		},
    53  		{
    54  			options: types.ContainerLogsOptions{
    55  				ShowStdout: true,
    56  				ShowStderr: true,
    57  				Timestamps: true,
    58  				Details:    true,
    59  				Follow:     true,
    60  			},
    61  			expectedQueryParams: map[string]string{
    62  				"tail":       "",
    63  				"stdout":     "1",
    64  				"stderr":     "1",
    65  				"timestamps": "1",
    66  				"details":    "1",
    67  				"follow":     "1",
    68  			},
    69  		},
    70  		{
    71  			options: types.ContainerLogsOptions{
    72  				// timestamp will be passed as is
    73  				Since: "1136073600.000000001",
    74  			},
    75  			expectedQueryParams: map[string]string{
    76  				"tail":  "",
    77  				"since": "1136073600.000000001",
    78  			},
    79  		},
    80  		{
    81  			options: types.ContainerLogsOptions{
    82  				// An complete invalid date will not be passed
    83  				Since: "invalid value",
    84  			},
    85  			expectedError: `invalid value for "since": failed to parse value as time or duration: "invalid value"`,
    86  		},
    87  	}
    88  	for _, logCase := range cases {
    89  		client := &Client{
    90  			client: newMockClient(func(r *http.Request) (*http.Response, error) {
    91  				if !strings.HasPrefix(r.URL.Path, expectedURL) {
    92  					return nil, fmt.Errorf("expected URL '%s', got '%s'", expectedURL, r.URL)
    93  				}
    94  				// Check query parameters
    95  				query := r.URL.Query()
    96  				for key, expected := range logCase.expectedQueryParams {
    97  					actual := query.Get(key)
    98  					if actual != expected {
    99  						return nil, fmt.Errorf("%s not set in URL query properly. Expected '%s', got %s", key, expected, actual)
   100  					}
   101  				}
   102  				return &http.Response{
   103  					StatusCode: http.StatusOK,
   104  					Body:       ioutil.NopCloser(bytes.NewReader([]byte("response"))),
   105  				}, nil
   106  			}),
   107  		}
   108  		body, err := client.ServiceLogs(context.Background(), "service_id", logCase.options)
   109  		if logCase.expectedError != "" {
   110  			assert.Check(t, is.Error(err, logCase.expectedError))
   111  			continue
   112  		}
   113  		assert.NilError(t, err)
   114  		defer body.Close()
   115  		content, err := ioutil.ReadAll(body)
   116  		assert.NilError(t, err)
   117  		assert.Check(t, is.Contains(string(content), "response"))
   118  	}
   119  }
   120  
   121  func ExampleClient_ServiceLogs_withTimeout() {
   122  	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
   123  	defer cancel()
   124  
   125  	client, _ := NewClientWithOpts(FromEnv)
   126  	reader, err := client.ServiceLogs(ctx, "service_id", types.ContainerLogsOptions{})
   127  	if err != nil {
   128  		log.Fatal(err)
   129  	}
   130  
   131  	_, err = io.Copy(os.Stdout, reader)
   132  	if err != nil && err != io.EOF {
   133  		log.Fatal(err)
   134  	}
   135  }