gitea/tests/integration/api_branch_test.go
wxiaoguang 6f9c278559
Rewrite queue (#24505)
# ⚠️ Breaking

Many deprecated queue config options are removed (actually, they should
have been removed in 1.18/1.19).

If you see the fatal message when starting Gitea: "Please update your
app.ini to remove deprecated config options", please follow the error
messages to remove these options from your app.ini.

Example:

```
2023/05/06 19:39:22 [E] Removed queue option: `[indexer].ISSUE_INDEXER_QUEUE_TYPE`. Use new options in `[queue.issue_indexer]`
2023/05/06 19:39:22 [E] Removed queue option: `[indexer].UPDATE_BUFFER_LEN`. Use new options in `[queue.issue_indexer]`
2023/05/06 19:39:22 [F] Please update your app.ini to remove deprecated config options
```

Many options in `[queue]` are are dropped, including:
`WRAP_IF_NECESSARY`, `MAX_ATTEMPTS`, `TIMEOUT`, `WORKERS`,
`BLOCK_TIMEOUT`, `BOOST_TIMEOUT`, `BOOST_WORKERS`, they can be removed
from app.ini.

# The problem

The old queue package has some legacy problems:

* complexity: I doubt few people could tell how it works.
* maintainability: Too many channels and mutex/cond are mixed together,
too many different structs/interfaces depends each other.
* stability: due to the complexity & maintainability, sometimes there
are strange bugs and difficult to debug, and some code doesn't have test
(indeed some code is difficult to test because a lot of things are mixed
together).
* general applicability: although it is called "queue", its behavior is
not a well-known queue.
* scalability: it doesn't seem easy to make it work with a cluster
without breaking its behaviors.

It came from some very old code to "avoid breaking", however, its
technical debt is too heavy now. It's a good time to introduce a better
"queue" package.

# The new queue package

It keeps using old config and concept as much as possible.

* It only contains two major kinds of concepts:
    * The "base queue": channel, levelqueue, redis
* They have the same abstraction, the same interface, and they are
tested by the same testing code.
* The "WokerPoolQueue", it uses the "base queue" to provide "worker
pool" function, calls the "handler" to process the data in the base
queue.
* The new code doesn't do "PushBack"
* Think about a queue with many workers, the "PushBack" can't guarantee
the order for re-queued unhandled items, so in new code it just does
"normal push"
* The new code doesn't do "pause/resume"
* The "pause/resume" was designed to handle some handler's failure: eg:
document indexer (elasticsearch) is down
* If a queue is paused for long time, either the producers blocks or the
new items are dropped.
* The new code doesn't do such "pause/resume" trick, it's not a common
queue's behavior and it doesn't help much.
* If there are unhandled items, the "push" function just blocks for a
few seconds and then re-queue them and retry.
* The new code doesn't do "worker booster"
* Gitea's queue's handlers are light functions, the cost is only the
go-routine, so it doesn't make sense to "boost" them.
* The new code only use "max worker number" to limit the concurrent
workers.
* The new "Push" never blocks forever
* Instead of creating more and more blocking goroutines, return an error
is more friendly to the server and to the end user.

There are more details in code comments: eg: the "Flush" problem, the
strange "code.index" hanging problem, the "immediate" queue problem.

Almost ready for review.

TODO:

* [x] add some necessary comments during review
* [x] add some more tests if necessary
* [x] update documents and config options
* [x] test max worker / active worker
* [x] re-run the CI tasks to see whether any test is flaky
* [x] improve the `handleOldLengthConfiguration` to provide more
friendly messages
* [x] fine tune default config values (eg: length?)

## Code coverage:

![image](https://user-images.githubusercontent.com/2114189/236620635-55576955-f95d-4810-b12f-879026a3afdf.png)
2023-05-08 19:49:59 +08:00

195 lines
6.4 KiB
Go

// Copyright 2017 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package integration
import (
"net/http"
"net/url"
"testing"
auth_model "code.gitea.io/gitea/models/auth"
api "code.gitea.io/gitea/modules/structs"
"code.gitea.io/gitea/tests"
"github.com/stretchr/testify/assert"
)
func testAPIGetBranch(t *testing.T, branchName string, exists bool) {
token := getUserToken(t, "user2", auth_model.AccessTokenScopeRepo)
req := NewRequestf(t, "GET", "/api/v1/repos/user2/repo1/branches/%s?token=%s", branchName, token)
resp := MakeRequest(t, req, NoExpectedStatus)
if !exists {
assert.EqualValues(t, http.StatusNotFound, resp.Code)
return
}
assert.EqualValues(t, http.StatusOK, resp.Code)
var branch api.Branch
DecodeJSON(t, resp, &branch)
assert.EqualValues(t, branchName, branch.Name)
assert.True(t, branch.UserCanPush)
assert.True(t, branch.UserCanMerge)
}
func testAPIGetBranchProtection(t *testing.T, branchName string, expectedHTTPStatus int) {
token := getUserToken(t, "user2", auth_model.AccessTokenScopeRepo)
req := NewRequestf(t, "GET", "/api/v1/repos/user2/repo1/branch_protections/%s?token=%s", branchName, token)
resp := MakeRequest(t, req, expectedHTTPStatus)
if resp.Code == http.StatusOK {
var branchProtection api.BranchProtection
DecodeJSON(t, resp, &branchProtection)
assert.EqualValues(t, branchName, branchProtection.RuleName)
}
}
func testAPICreateBranchProtection(t *testing.T, branchName string, expectedHTTPStatus int) {
token := getUserToken(t, "user2", auth_model.AccessTokenScopeRepo)
req := NewRequestWithJSON(t, "POST", "/api/v1/repos/user2/repo1/branch_protections?token="+token, &api.BranchProtection{
RuleName: branchName,
})
resp := MakeRequest(t, req, expectedHTTPStatus)
if resp.Code == http.StatusCreated {
var branchProtection api.BranchProtection
DecodeJSON(t, resp, &branchProtection)
assert.EqualValues(t, branchName, branchProtection.RuleName)
}
}
func testAPIEditBranchProtection(t *testing.T, branchName string, body *api.BranchProtection, expectedHTTPStatus int) {
token := getUserToken(t, "user2", auth_model.AccessTokenScopeRepo)
req := NewRequestWithJSON(t, "PATCH", "/api/v1/repos/user2/repo1/branch_protections/"+branchName+"?token="+token, body)
resp := MakeRequest(t, req, expectedHTTPStatus)
if resp.Code == http.StatusOK {
var branchProtection api.BranchProtection
DecodeJSON(t, resp, &branchProtection)
assert.EqualValues(t, branchName, branchProtection.RuleName)
}
}
func testAPIDeleteBranchProtection(t *testing.T, branchName string, expectedHTTPStatus int) {
token := getUserToken(t, "user2", auth_model.AccessTokenScopeRepo)
req := NewRequestf(t, "DELETE", "/api/v1/repos/user2/repo1/branch_protections/%s?token=%s", branchName, token)
MakeRequest(t, req, expectedHTTPStatus)
}
func testAPIDeleteBranch(t *testing.T, branchName string, expectedHTTPStatus int) {
token := getUserToken(t, "user2", auth_model.AccessTokenScopeRepo)
req := NewRequestf(t, "DELETE", "/api/v1/repos/user2/repo1/branches/%s?token=%s", branchName, token)
MakeRequest(t, req, expectedHTTPStatus)
}
func TestAPIGetBranch(t *testing.T) {
defer tests.PrepareTestEnv(t)()
for _, test := range []struct {
BranchName string
Exists bool
}{
{"master", true},
{"master/doesnotexist", false},
{"feature/1", true},
{"feature/1/doesnotexist", false},
} {
testAPIGetBranch(t, test.BranchName, test.Exists)
}
}
func TestAPICreateBranch(t *testing.T) {
onGiteaRun(t, testAPICreateBranches)
}
func testAPICreateBranches(t *testing.T, giteaURL *url.URL) {
username := "user2"
ctx := NewAPITestContext(t, username, "my-noo-repo", auth_model.AccessTokenScopeRepo)
giteaURL.Path = ctx.GitPath()
t.Run("CreateRepo", doAPICreateRepository(ctx, false))
testCases := []struct {
OldBranch string
NewBranch string
ExpectedHTTPStatus int
}{
// Creating branch from default branch
{
OldBranch: "",
NewBranch: "new_branch_from_default_branch",
ExpectedHTTPStatus: http.StatusCreated,
},
// Creating branch from master
{
OldBranch: "master",
NewBranch: "new_branch_from_master_1",
ExpectedHTTPStatus: http.StatusCreated,
},
// Trying to create from master but already exists
{
OldBranch: "master",
NewBranch: "new_branch_from_master_1",
ExpectedHTTPStatus: http.StatusConflict,
},
// Trying to create from other branch (not default branch)
{
OldBranch: "new_branch_from_master_1",
NewBranch: "branch_2",
ExpectedHTTPStatus: http.StatusCreated,
},
// Trying to create from a branch which does not exist
{
OldBranch: "does_not_exist",
NewBranch: "new_branch_from_non_existent",
ExpectedHTTPStatus: http.StatusNotFound,
},
}
for _, test := range testCases {
session := ctx.Session
testAPICreateBranch(t, session, "user2", "my-noo-repo", test.OldBranch, test.NewBranch, test.ExpectedHTTPStatus)
}
}
func testAPICreateBranch(t testing.TB, session *TestSession, user, repo, oldBranch, newBranch string, status int) bool {
token := getTokenForLoggedInUser(t, session, auth_model.AccessTokenScopeRepo)
req := NewRequestWithJSON(t, "POST", "/api/v1/repos/"+user+"/"+repo+"/branches?token="+token, &api.CreateBranchRepoOption{
BranchName: newBranch,
OldBranchName: oldBranch,
})
resp := MakeRequest(t, req, status)
var branch api.Branch
DecodeJSON(t, resp, &branch)
if status == http.StatusCreated {
assert.EqualValues(t, newBranch, branch.Name)
}
return resp.Result().StatusCode == status
}
func TestAPIBranchProtection(t *testing.T) {
defer tests.PrepareTestEnv(t)()
// Branch protection on branch that not exist
testAPICreateBranchProtection(t, "master/doesnotexist", http.StatusCreated)
// Get branch protection on branch that exist but not branch protection
testAPIGetBranchProtection(t, "master", http.StatusNotFound)
testAPICreateBranchProtection(t, "master", http.StatusCreated)
// Can only create once
testAPICreateBranchProtection(t, "master", http.StatusForbidden)
// Can't delete a protected branch
testAPIDeleteBranch(t, "master", http.StatusForbidden)
testAPIGetBranchProtection(t, "master", http.StatusOK)
testAPIEditBranchProtection(t, "master", &api.BranchProtection{
EnablePush: true,
}, http.StatusOK)
testAPIDeleteBranchProtection(t, "master", http.StatusNoContent)
// Test branch deletion
testAPIDeleteBranch(t, "master", http.StatusForbidden)
testAPIDeleteBranch(t, "branch2", http.StatusNoContent)
}