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package loadtester | ||
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import ( | ||
"context" | ||
"encoding/base64" | ||
"encoding/json" | ||
"errors" | ||
"fmt" | ||
"go.uber.org/zap" | ||
"io/ioutil" | ||
"net/http" | ||
"net/url" | ||
"strconv" | ||
"time" | ||
) | ||
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const TaskTypeNGrinder = "ngrinder" | ||
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func init() { | ||
taskFactories.Store(TaskTypeNGrinder, func(metadata map[string]string, canary string, logger *zap.SugaredLogger) (Task, error) { | ||
server := metadata["server"] | ||
clone := metadata["clone"] | ||
username := metadata["username"] | ||
passwd := metadata["passwd"] | ||
if server == "" || clone == "" || username == "" || passwd == "" { | ||
return nil, errors.New("server, clone, username and passwd are required metadata") | ||
} | ||
baseUrl, err := url.Parse(server) | ||
if err != nil { | ||
return nil, errors.New(fmt.Sprintf("invalid url: %s", server)) | ||
} | ||
cloneId, err := strconv.Atoi(clone) | ||
if err != nil { | ||
return nil, errors.New("metadata clone must be integer") | ||
} | ||
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passwdDecoded, err := base64.StdEncoding.DecodeString(passwd) | ||
if err != nil { | ||
return nil, errors.New("metadata auth provided is invalid, base64 encoded username:password required") | ||
} | ||
return &NGrinderTask{ | ||
TaskBase{canary, logger}, | ||
baseUrl, cloneId, username, string(passwdDecoded), -1, | ||
}, nil | ||
}) | ||
} | ||
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type NGrinderTask struct { | ||
TaskBase | ||
baseUrl *url.URL | ||
cloneId int | ||
username string | ||
passwd string | ||
testId int | ||
} | ||
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func (task *NGrinderTask) Hash() string { | ||
return hash(task.canary + task.CloneAndStartEndpoint().String()) | ||
} | ||
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func (task *NGrinderTask) CloneAndStartEndpoint() *url.URL { | ||
path, _ := url.Parse(fmt.Sprintf("perftest/api/%d/clone_and_start", task.cloneId)) | ||
return task.baseUrl.ResolveReference(path) | ||
} | ||
func (task *NGrinderTask) StopEndpoint() *url.URL { | ||
path, _ := url.Parse(fmt.Sprintf("perftest/api/%d?action=stop", task.testId)) | ||
return task.baseUrl.ResolveReference(path) | ||
} | ||
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func (task *NGrinderTask) Run(ctx context.Context) bool { | ||
url := task.CloneAndStartEndpoint().String() | ||
result, err := task.request("POST", url, ctx) | ||
if err != nil { | ||
task.logger.With("canary", task.canary).Errorf("failed to clone and start ngrinder test %s: %s", url, err.Error()) | ||
return false | ||
} | ||
id := result["id"] | ||
testId, ok := id.(int) | ||
if !ok { | ||
return false | ||
} else { | ||
task.testId = testId | ||
return task.PollStatus(ctx) | ||
} | ||
} | ||
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func (task *NGrinderTask) String() string { | ||
return task.canary + task.CloneAndStartEndpoint().String() | ||
} | ||
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func (task *NGrinderTask) PollStatus(ctx context.Context) bool { | ||
// wait until ngrinder test completed or timedout | ||
tickChan := time.NewTicker(time.Second * 15).C | ||
for { | ||
select { | ||
case <-tickChan: | ||
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case <-ctx.Done(): | ||
return false | ||
} | ||
} | ||
} | ||
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func (task *NGrinderTask) request(method, url string, ctx context.Context) (map[string]interface{}, error) { | ||
req, _ := http.NewRequest(method, url, nil) | ||
req.SetBasicAuth(task.username, task.passwd) | ||
resp, err := http.DefaultClient.Do(req.WithContext(ctx)) | ||
defer resp.Body.Close() | ||
if err != nil { | ||
return nil, err | ||
} | ||
respBytes, err := ioutil.ReadAll(resp.Body) | ||
res := make(map[string]interface{}) | ||
json.Unmarshal(respBytes, res) | ||
err = nil | ||
if success, ok := res["success"]; ok && success == false { | ||
err = errors.New(res["message"].(string)) | ||
} | ||
return res, err | ||
} |