Add client error to sdk and fix purge cli

cli/pipeline/purge.go

@@ -1,4 +1,4 @@
-// Copyright 2022 Woodpecker Authors
+// Copyright 2024 Woodpecker Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -16,7 +16,9 @@ package pipeline
 
 import (
 	"context"
+	"errors"
 	"fmt"
+	"net/http"
 	"time"
 
 	"github.com/rs/zerolog/log"
@@ -121,6 +123,11 @@ func pipelinePurge(c *cli.Command, client woodpecker.Client) (err error) {
 
 		err := client.PipelineDelete(repoID, p.Number)
 		if err != nil {
+			var clientErr *woodpecker.ClientError
+			if errors.As(err, &clientErr) && clientErr.StatusCode == http.StatusUnprocessableEntity {
+				log.Error().Err(err).Msgf("failed to delete pipeline %d", p.Number)
+				continue
+			}
 			return err
 		}
 	}

woodpecker-go/woodpecker/client.go

@@ -34,6 +34,15 @@ const (
 	// pathVersion        = "%s/version"
 )
 
+type ClientError struct {
+	StatusCode int
+	Message    string
+}
+
+func (e *ClientError) Error() string {
+	return fmt.Sprintf("client error %d: %s", e.StatusCode, e.Message)
+}
+
 type client struct {
 	client *http.Client
 	addr   string
@@ -116,16 +125,25 @@ func (c *client) do(rawURL, method string, in, out any) error {
 func (c *client) open(rawURL, method string, in any) (io.ReadCloser, error) {
 	uri, err := url.Parse(rawURL)
 	if err != nil {
-		return nil, err
+		return nil, &ClientError{
+			StatusCode: http.StatusInternalServerError,
+			Message:    err.Error(),
+		}
 	}
 	req, err := http.NewRequest(method, uri.String(), nil)
 	if err != nil {
-		return nil, err
+		return nil, &ClientError{
+			StatusCode: http.StatusInternalServerError,
+			Message:    err.Error(),
+		}
 	}
 	if in != nil {
 		decoded, decodeErr := json.Marshal(in)
 		if decodeErr != nil {
-			return nil, decodeErr
+			return nil, &ClientError{
+				StatusCode: http.StatusInternalServerError,
+				Message:    decodeErr.Error(),
+			}
 		}
 		buf := bytes.NewBuffer(decoded)
 		req.Body = io.NopCloser(buf)
@@ -135,12 +153,18 @@ func (c *client) open(rawURL, method string, in any) (io.ReadCloser, error) {
 	}
 	resp, err := c.client.Do(req)
 	if err != nil {
-		return nil, err
+		return nil, &ClientError{
+			StatusCode: http.StatusInternalServerError,
+			Message:    err.Error(),
+		}
 	}
 	if resp.StatusCode > http.StatusPartialContent {
 		defer resp.Body.Close()
 		out, _ := io.ReadAll(resp.Body)
-		return nil, fmt.Errorf("client error %d: %s", resp.StatusCode, string(out))
+		return nil, &ClientError{
+			StatusCode: resp.StatusCode,
+			Message:    string(out),
+		}
 	}
 	return resp.Body, nil
 }