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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,155 @@ | ||
| package gitlab | ||
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| // # Infos / notes: | ||
| // | ||
| // ## Webhook calls | ||
| // | ||
| // Official API docs: https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/web_hooks/web_hooks.md | ||
| // | ||
| // ### Code Push | ||
| // | ||
| // A code push webhook is sent with the header: `X-Gitlab-Event: Push Hook`. | ||
| // Official docs: https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/web_hooks/web_hooks.md#push-events | ||
| // | ||
| // GitLab sends push webhooks for every branch separately. Even if you | ||
| // push to two different branches at the same time (git push --all) it'll | ||
| // trigger two webhook calls, one for each branch. | ||
| // | ||
| // Commits are grouped in the webhook - if you push more than one commit | ||
| // to a single branch it'll be included in a single webhook call, including | ||
| // all of the commits. | ||
| // | ||
| // The latest commit's hash is included as the "checkout_sha" parameter | ||
| // in the webhook. As we don't want to trigger build for every commit | ||
| // which is related to a single branch we will only handle the commit | ||
| // with the hash / id specified as the "checkout_sha". | ||
| // | ||
|
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| import ( | ||
| "encoding/json" | ||
| "errors" | ||
| "fmt" | ||
| "net/http" | ||
| "strings" | ||
|
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| "github.com/bitrise-io/bitrise-webhooks/bitriseapi" | ||
| hookCommon "github.com/bitrise-io/bitrise-webhooks/service/hook/common" | ||
| "github.com/bitrise-io/go-utils/httputil" | ||
| ) | ||
|
|
||
| // -------------------------- | ||
| // --- Webhook Data Model --- | ||
|
|
||
| const ( | ||
| pushEventID = "Push Hook" | ||
| ) | ||
|
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| // CommitModel ... | ||
| type CommitModel struct { | ||
| CommitHash string `json:"id"` | ||
| CommitMessage string `json:"message"` | ||
| } | ||
|
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| // CodePushEventModel ... | ||
| type CodePushEventModel struct { | ||
| ObjectKind string `json:"object_kind"` | ||
| Ref string `json:"ref"` | ||
| CheckoutSHA string `json:"checkout_sha"` | ||
| Commits []CommitModel `json:"commits"` | ||
| } | ||
|
|
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| // --------------------------------------- | ||
| // --- Webhook Provider Implementation --- | ||
|
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| // HookProvider ... | ||
| type HookProvider struct{} | ||
|
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| func detectContentTypeAndEventID(header http.Header) (string, string, error) { | ||
| contentType, err := httputil.GetSingleValueFromHeader("Content-Type", header) | ||
| if err != nil { | ||
| return "", "", fmt.Errorf("Issue with Content-Type Header: %s", err) | ||
| } | ||
|
|
||
| eventID, err := httputil.GetSingleValueFromHeader("X-Gitlab-Event", header) | ||
| if err != nil { | ||
| return "", "", fmt.Errorf("Issue with X-Gitlab-Event Header: %s", err) | ||
| } | ||
|
|
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| return contentType, eventID, nil | ||
| } | ||
|
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| func transformCodePushEvent(codePushEvent CodePushEventModel) hookCommon.TransformResultModel { | ||
| if !strings.HasPrefix(codePushEvent.Ref, "refs/heads/") { | ||
| return hookCommon.TransformResultModel{ | ||
| Error: fmt.Errorf("Ref (%s) is not a head ref", codePushEvent.Ref), | ||
| ShouldSkip: true, | ||
| } | ||
| } | ||
| branch := strings.TrimPrefix(codePushEvent.Ref, "refs/heads/") | ||
|
|
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| lastCommit := CommitModel{} | ||
| isLastCommitFound := false | ||
| for _, aCommit := range codePushEvent.Commits { | ||
| if aCommit.CommitHash == codePushEvent.CheckoutSHA { | ||
| isLastCommitFound = true | ||
| lastCommit = aCommit | ||
| break | ||
| } | ||
| } | ||
|
|
||
| if !isLastCommitFound { | ||
| return hookCommon.TransformResultModel{ | ||
| Error: errors.New("The commit specified by 'checkout_sha' was not included in the 'commits' array - no match found"), | ||
| } | ||
| } | ||
|
|
||
| return hookCommon.TransformResultModel{ | ||
| TriggerAPIParams: []bitriseapi.TriggerAPIParamsModel{ | ||
| { | ||
| BuildParams: bitriseapi.BuildParamsModel{ | ||
| CommitHash: lastCommit.CommitHash, | ||
| CommitMessage: lastCommit.CommitMessage, | ||
| Branch: branch, | ||
| }, | ||
| }, | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| // TransformRequest ... | ||
| func (hp HookProvider) TransformRequest(r *http.Request) hookCommon.TransformResultModel { | ||
| contentType, eventID, err := detectContentTypeAndEventID(r.Header) | ||
| if err != nil { | ||
| return hookCommon.TransformResultModel{ | ||
| Error: fmt.Errorf("Issue with Headers: %s", err), | ||
| } | ||
| } | ||
|
|
||
| if contentType != "application/json" { | ||
| return hookCommon.TransformResultModel{ | ||
| Error: fmt.Errorf("Content-Type is not supported: %s", contentType), | ||
| } | ||
| } | ||
|
|
||
| if eventID != "Push Hook" { | ||
| // Unsupported Event | ||
| return hookCommon.TransformResultModel{ | ||
| Error: fmt.Errorf("Unsupported Webhook event: %s", eventID), | ||
| } | ||
| } | ||
|
|
||
| if r.Body == nil { | ||
| return hookCommon.TransformResultModel{ | ||
| Error: fmt.Errorf("Failed to read content of request body: no or empty request body"), | ||
| } | ||
| } | ||
|
|
||
| // code push | ||
| var codePushEvent CodePushEventModel | ||
| if contentType == "application/json" { | ||
| if err := json.NewDecoder(r.Body).Decode(&codePushEvent); err != nil { | ||
| return hookCommon.TransformResultModel{Error: fmt.Errorf("Failed to parse request body: %s", err)} | ||
| } | ||
| } | ||
| return transformCodePushEvent(codePushEvent) | ||
| } |
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