forgejo/modules/private/manager.go
wxiaoguang f4538791f5
Refactor internal API for git commands, use meaningful messages instead of "Internal Server Error" ()
# Why this PR comes

At first, I'd like to help users like  (there are a lot)

The unclear "Internal Server Error" is quite anonying, scare users,
frustrate contributors, nobody knows what happens.

So, it's always good to provide meaningful messages to end users (of
course, do not leak sensitive information).

When I started working on the "response message to end users", I found
that the related code has a lot of technical debt. A lot of copy&paste
code, unclear fields and usages.

So I think it's good to make everything clear.

# Tech Backgrounds

Gitea has many sub-commands, some are used by admins, some are used by
SSH servers or Git Hooks. Many sub-commands use "internal API" to
communicate with Gitea web server.

Before, Gitea server always use `StatusCode + Json "err" field` to
return messages.

* The CLI sub-commands: they expect to show all error related messages
to site admin
* The Serv/Hook sub-commands (for git clients): they could only show
safe messages to end users, the error log could only be recorded by
"SSHLog" to Gitea web server.

In the old design, it assumes that:

* If the StatusCode is 500 (in some functions), then the "err" field is
error log, shouldn't be exposed to git client.
* If the StatusCode is 40x, then the "err" field could be exposed. And
some functions always read the "err" no matter what the StatusCode is.

The old code is not strict, and it's difficult to distinguish the
messages clearly and then output them correctly.

# This PR

To help to remove duplicate code and make everything clear, this PR
introduces `ResponseExtra` and `requestJSONResp`.

* `ResponseExtra` is a struct which contains "extra" information of a
internal API response, including StatusCode, UserMsg, Error
* `requestJSONResp` is a generic function which can be used for all
cases to help to simplify the calls.
* Remove all `map["err"]`, always use `private.Response{Err}` to
construct error messages.
* User messages and error messages are separated clearly, the `fail` and
`handleCliResponseExtra` will output correct messages.
* Replace all `Internal Server Error` messages with meaningful (still
safe) messages.

This PR saves more than 300 lines, while makes the git client messages
more clear.

Many gitea-serv/git-hook related essential functions are covered by
tests.

---------

Co-authored-by: delvh <dev.lh@web.de>
2023-03-29 14:32:26 +08:00

113 lines
3.8 KiB
Go

// Copyright 2020 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package private
import (
"context"
"fmt"
"io"
"net/http"
"net/url"
"strconv"
"time"
"code.gitea.io/gitea/modules/setting"
)
// Shutdown calls the internal shutdown function
func Shutdown(ctx context.Context) ResponseExtra {
reqURL := setting.LocalURL + "api/internal/manager/shutdown"
req := newInternalRequest(ctx, reqURL, "POST")
return requestJSONUserMsg(req, "Shutting down")
}
// Restart calls the internal restart function
func Restart(ctx context.Context) ResponseExtra {
reqURL := setting.LocalURL + "api/internal/manager/restart"
req := newInternalRequest(ctx, reqURL, "POST")
return requestJSONUserMsg(req, "Restarting")
}
// FlushOptions represents the options for the flush call
type FlushOptions struct {
Timeout time.Duration
NonBlocking bool
}
// FlushQueues calls the internal flush-queues function
func FlushQueues(ctx context.Context, timeout time.Duration, nonBlocking bool) ResponseExtra {
reqURL := setting.LocalURL + "api/internal/manager/flush-queues"
req := newInternalRequest(ctx, reqURL, "POST", FlushOptions{Timeout: timeout, NonBlocking: nonBlocking})
if timeout > 0 {
req.SetReadWriteTimeout(timeout + 10*time.Second)
}
return requestJSONUserMsg(req, "Flushed")
}
// PauseLogging pauses logging
func PauseLogging(ctx context.Context) ResponseExtra {
reqURL := setting.LocalURL + "api/internal/manager/pause-logging"
req := newInternalRequest(ctx, reqURL, "POST")
return requestJSONUserMsg(req, "Logging Paused")
}
// ResumeLogging resumes logging
func ResumeLogging(ctx context.Context) ResponseExtra {
reqURL := setting.LocalURL + "api/internal/manager/resume-logging"
req := newInternalRequest(ctx, reqURL, "POST")
return requestJSONUserMsg(req, "Logging Restarted")
}
// ReleaseReopenLogging releases and reopens logging files
func ReleaseReopenLogging(ctx context.Context) ResponseExtra {
reqURL := setting.LocalURL + "api/internal/manager/release-and-reopen-logging"
req := newInternalRequest(ctx, reqURL, "POST")
return requestJSONUserMsg(req, "Logging Restarted")
}
// SetLogSQL sets database logging
func SetLogSQL(ctx context.Context, on bool) ResponseExtra {
reqURL := setting.LocalURL + "api/internal/manager/set-log-sql?on=" + strconv.FormatBool(on)
req := newInternalRequest(ctx, reqURL, "POST")
return requestJSONUserMsg(req, "Log SQL setting set")
}
// LoggerOptions represents the options for the add logger call
type LoggerOptions struct {
Group string
Name string
Mode string
Config map[string]interface{}
}
// AddLogger adds a logger
func AddLogger(ctx context.Context, group, name, mode string, config map[string]interface{}) ResponseExtra {
reqURL := setting.LocalURL + "api/internal/manager/add-logger"
req := newInternalRequest(ctx, reqURL, "POST", LoggerOptions{
Group: group,
Name: name,
Mode: mode,
Config: config,
})
return requestJSONUserMsg(req, "Added")
}
// RemoveLogger removes a logger
func RemoveLogger(ctx context.Context, group, name string) ResponseExtra {
reqURL := setting.LocalURL + fmt.Sprintf("api/internal/manager/remove-logger/%s/%s", url.PathEscape(group), url.PathEscape(name))
req := newInternalRequest(ctx, reqURL, "POST")
return requestJSONUserMsg(req, "Removed")
}
// Processes return the current processes from this gitea instance
func Processes(ctx context.Context, out io.Writer, flat, noSystem, stacktraces, json bool, cancel string) ResponseExtra {
reqURL := setting.LocalURL + fmt.Sprintf("api/internal/manager/processes?flat=%t&no-system=%t&stacktraces=%t&json=%t&cancel-pid=%s", flat, noSystem, stacktraces, json, url.QueryEscape(cancel))
req := newInternalRequest(ctx, reqURL, "GET")
callback := func(resp *http.Response, extra *ResponseExtra) {
_, extra.Error = io.Copy(out, resp.Body)
}
_, extra := requestJSONResp(req, &callback)
return extra
}