fix: limit the length of the pipeline description

Author: jippi

pkg/scm/gitlab/client.go

@@ -205,22 +205,22 @@ func (client *Client) Stop(ctx context.Context, evalError error, allowPipelineFa
 	}
 
 	var (
-		status  = go_gitlab.Success
-		message = "OK"
+		status      = go_gitlab.Success
+		description = "OK"
 	)
 
 	if evalError != nil {
 		if allowPipelineFailure {
 			status = go_gitlab.Failed
 		}
 
-		message = evalError.Error()
+		description = scm.TruncateText(evalError.Error(), 250)
 	}
 
 	_, response, err := client.wrapped.Commits.SetCommitStatus(state.ProjectID(ctx), state.CommitSHA(ctx), &go_gitlab.SetCommitStatusOptions{
 		State:       status,
 		Context:     pipelineName,
-		Description: scm.Ptr(message),
+		Description: scm.Ptr(description),
 		TargetURL:   targetURL,
 	})
 

pkg/scm/helpers.go

@@ -5,6 +5,7 @@ import (
 	"path/filepath"
 	"regexp"
 	"strings"
+	"unicode"
 )
 
 // Ptr is a helper that returns a pointer to v.
@@ -74,6 +75,26 @@ func FindModifiedFiles(files []string, patterns ...string) []string {
 	return output
 }
 
+func TruncateText(text string, maxLen int) string {
+	lastSpaceIx := maxLen
+	curLen := 0
+
+	for i, r := range text {
+		if unicode.IsSpace(r) {
+			lastSpaceIx = i
+		}
+
+		curLen++
+
+		if curLen > maxLen {
+			return text[:lastSpaceIx] + "..."
+		}
+	}
+
+	// If here, string is shorter or equal to maxLen
+	return text
+}
+
 // buildPatternRegex compiles a new regexp object from a gitignore-style pattern string
 func buildPatternRegex(pattern string) (*regexp.Regexp, error) {
 	// Handle specific edge cases first