Remove stale Gitea 1.20 compatibility shims (#978)

The runner already enforces Gitea v1.21+ (see the `connect.CodeUnimplemented` check in `daemon.go`), so several shims kept for v1.20 compatibility have been dead since 2023:

- `compatibleWithOldEnvs` — the `GITEA_DEBUG`, `GITEA_TRACE`, `GITEA_RUNNER_CAPACITY`, `GITEA_RUNNER_FILE`, `GITEA_RUNNER_ENVIRON`, `GITEA_RUNNER_ENV_FILE` env vars (superseded by the config file)
- `VersionHeader` (`x-runner-version`) and the `version` param of `client.New`
- `AgentLabels` field in `RegisterRequest` (replaced by `Labels`)

Also replaces a verbose `strings.TrimRightFunc` closure with `strings.TrimRight(s, "\r\n")` in the log row parser.

---
This PR was written with the help of Claude Opus 4.7

---------

Co-authored-by: Nicolas <bircni@icloud.com>
Reviewed-on: https://gitea.com/gitea/runner/pulls/978
Reviewed-by: Nicolas <bircni@icloud.com>
Co-authored-by: silverwind <me@silverwind.io>
Co-committed-by: silverwind <me@silverwind.io>

internal/app/cmd/daemon.go

@@ -132,7 +132,6 @@ func runDaemon(ctx context.Context, daemArgs *daemonArgs, configFile *string) fu
 			cfg.Runner.Insecure,
 			reg.UUID,
 			reg.Token,
-			ver.Version(),
 		)
 
 		runner := run.NewRunner(cfg, reg, cli)

internal/app/cmd/register.go

@@ -325,7 +325,6 @@ func doRegister(ctx context.Context, cfg *config.Config, inputs *registerInputs)
 		cfg.Runner.Insecure,
 		"",
 		"",
-		ver.Version(),
 	)
 
 	for {
@@ -366,12 +365,11 @@ func doRegister(ctx context.Context, cfg *config.Config, inputs *registerInputs)
 	}
 	// register new runner.
 	resp, err := cli.Register(ctx, connect.NewRequest(&runnerv1.RegisterRequest{
-		Name:        reg.Name,
+		Name:      reg.Name,
-		Token:       reg.Token,
+		Token:     reg.Token,
-		Version:     ver.Version(),
+		Version:   ver.Version(),
-		AgentLabels: ls, // Could be removed after Gitea 1.20
+		Labels:    ls,
-		Labels:      ls,
+		Ephemeral: reg.Ephemeral,
-		Ephemeral:   reg.Ephemeral,
 	}))
 	if err != nil {
 		log.WithError(err).Error("poller: cannot register new runner")

internal/pkg/client/header.go

@@ -6,6 +6,4 @@ package client
 const (
 	UUIDHeader  = "x-runner-uuid"
 	TokenHeader = "x-runner-token"
-	// Deprecated: could be removed after Gitea 1.20 released
-	VersionHeader = "x-runner-version"
 )

internal/pkg/client/http.go

@@ -31,7 +31,7 @@ func getHTTPClient(endpoint string, insecure bool) *http.Client {
 }
 
 // New returns a new runner client.
-func New(endpoint string, insecure bool, uuid, token, version string, opts ...connect.ClientOption) *HTTPClient {
+func New(endpoint string, insecure bool, uuid, token string, opts ...connect.ClientOption) *HTTPClient {
 	baseURL := strings.TrimRight(endpoint, "/") + "/api/actions"
 
 	opts = append(opts, connect.WithInterceptors(connect.UnaryInterceptorFunc(func(next connect.UnaryFunc) connect.UnaryFunc {
@@ -42,10 +42,6 @@ func New(endpoint string, insecure bool, uuid, token, version string, opts ...co
 			if token != "" {
 				req.Header().Set(TokenHeader, token)
 			}
-			// TODO: version will be removed from request header after Gitea 1.20 released.
-			if version != "" {
-				req.Header().Set(VersionHeader, version)
-			}
 			return next(ctx, req)
 		}
 	})))

internal/pkg/config/config.go

@@ -109,7 +109,6 @@ func LoadDefault(file string) (*Config, error) {
 			return nil, fmt.Errorf("parse config file %q for defaults metadata: %w", file, err)
 		}
 	}
-	compatibleWithOldEnvs(file != "", cfg)
 
 	if cfg.Runner.EnvFile != "" {
 		if stat, err := os.Stat(cfg.Runner.EnvFile); err == nil && !stat.IsDir() {

internal/pkg/config/deprecated.go

@@ -1,62 +0,0 @@
-// Copyright 2023 The Gitea Authors. All rights reserved.
-// SPDX-License-Identifier: MIT
-
-package config
-
-import (
-	"os"
-	"strconv"
-	"strings"
-
-	log "github.com/sirupsen/logrus"
-)
-
-// Deprecated: could be removed in the future. TODO: remove it when Gitea 1.20.0 is released.
-// Be compatible with old envs.
-func compatibleWithOldEnvs(fileUsed bool, cfg *Config) {
-	handleEnv := func(key string) (string, bool) {
-		if v, ok := os.LookupEnv(key); ok {
-			if fileUsed {
-				log.Warnf("env %s has been ignored because config file is used", key)
-				return "", false
-			}
-			log.Warnf("env %s will be deprecated, please use config file instead", key)
-			return v, true
-		}
-		return "", false
-	}
-
-	if v, ok := handleEnv("GITEA_DEBUG"); ok {
-		if b, _ := strconv.ParseBool(v); b {
-			cfg.Log.Level = "debug"
-		}
-	}
-	if v, ok := handleEnv("GITEA_TRACE"); ok {
-		if b, _ := strconv.ParseBool(v); b {
-			cfg.Log.Level = "trace"
-		}
-	}
-	if v, ok := handleEnv("GITEA_RUNNER_CAPACITY"); ok {
-		if i, _ := strconv.Atoi(v); i > 0 {
-			cfg.Runner.Capacity = i
-		}
-	}
-	if v, ok := handleEnv("GITEA_RUNNER_FILE"); ok {
-		cfg.Runner.File = v
-	}
-	if v, ok := handleEnv("GITEA_RUNNER_ENVIRON"); ok {
-		splits := strings.Split(v, ",")
-		if cfg.Runner.Envs == nil {
-			cfg.Runner.Envs = map[string]string{}
-		}
-		for _, split := range splits {
-			kv := strings.SplitN(split, ":", 2)
-			if len(kv) == 2 && kv[0] != "" {
-				cfg.Runner.Envs[kv[0]] = kv[1]
-			}
-		}
-	}
-	if v, ok := handleEnv("GITEA_RUNNER_ENV_FILE"); ok {
-		cfg.Runner.EnvFile = v
-	}
-}

internal/pkg/report/reporter.go

@@ -639,7 +639,7 @@ func (r *Reporter) handleCommand(originalContent, command, value string) *string
 }
 
 func (r *Reporter) parseLogRow(entry *log.Entry) *runnerv1.LogRow {
-	content := strings.TrimRightFunc(entry.Message, func(r rune) bool { return r == '\r' || r == '\n' })
+	content := strings.TrimRight(entry.Message, "\r\n")
 
 	matches := cmdRegex.FindStringSubmatch(content)
 	if matches != nil {