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// Copyright 2025 tsuru authors. All rights reserved.

// Use of this source code is governed by a BSD-style

// license that can be found in the LICENSE file.

package api

import (

"context"

"encoding/json"

"net/http"

"net/http/httptest"

"strings"

"github.com/tsuru/tsuru/app"

"github.com/tsuru/tsuru/event/eventtest"

"github.com/tsuru/tsuru/permission"

"github.com/tsuru/tsuru/provision"

"github.com/tsuru/tsuru/provision/provisiontest"

appTypes "github.com/tsuru/tsuru/types/app"

permTypes "github.com/tsuru/tsuru/types/permission"

provTypes "github.com/tsuru/tsuru/types/provision"

"github.com/tsuru/tsuru/types/quota"

check "gopkg.in/check.v1"

"k8s.io/utils/ptr"

)

func (s *S) TestAutoScaleUnitsInfo(c *check.C) {

ctx := context.Background()

provision.DefaultProvisioner = "autoscaleProv"

provision.Register("autoscaleProv", func() (provision.Provisioner, error) {

return &provisiontest.AutoScaleProvisioner{FakeProvisioner: provisiontest.ProvisionerInstance}, nil

})

defer provision.Unregister("autoscaleProv")

a := appTypes.App{Name: "myapp", Platform: "zend", TeamOwner: s.team.Name}

err := app.CreateApp(context.TODO(), &a, s.user)

c.Assert(err, check.IsNil)

autoscaleSpec := provTypes.AutoScaleSpec{

Process: "p1",

AverageCPU: "300m",

MaxUnits: 10,

MinUnits: 2,

}

err = app.AutoScale(ctx, &a, autoscaleSpec)

c.Assert(err, check.IsNil)

token := userWithPermission(c, permTypes.Permission{

Scheme: permission.PermAppRead,

Context: permission.Context(permTypes.CtxApp, a.Name),

})

request, err := http.NewRequest("GET", "/apps/myapp/units/autoscale", nil)

c.Assert(err, check.IsNil)

request.Header.Set("Authorization", "bearer "+token.GetValue())

recorder := httptest.NewRecorder()

s.testServer.ServeHTTP(recorder, request)

c.Assert(recorder.Code, check.Equals, http.StatusOK)

c.Assert(recorder.Header().Get("Content-Type"), check.Equals, "application/json")

var autoscales []provTypes.AutoScaleSpec

err = json.Unmarshal(recorder.Body.Bytes(), &autoscales)

c.Assert(err, check.IsNil)

c.Assert(autoscales, check.HasLen, 1)

c.Assert(autoscales[0], check.DeepEquals, autoscaleSpec)

}

func (s *S) TestAddAutoScaleUnits(c *check.C) {

ctx := context.Background()

s.mockService.AppQuota.OnGet = func(item *appTypes.App) (*quota.Quota, error) {

c.Assert(item.Name, check.Equals, "myapp")

return &quota.Quota{

Limit: 10,

}, nil

}

provision.DefaultProvisioner = "autoscaleProv"

provision.Register("autoscaleProv", func() (provision.Provisioner, error) {

return &provisiontest.AutoScaleProvisioner{FakeProvisioner: provisiontest.ProvisionerInstance}, nil

})

defer provision.Unregister("autoscaleProv")

a := appTypes.App{Name: "myapp", Platform: "zend", TeamOwner: s.team.Name}

err := app.CreateApp(context.TODO(), &a, s.user)

c.Assert(err, check.IsNil)

token := userWithPermission(c, permTypes.Permission{

Scheme: permission.PermAppUpdate,

Context: permission.Context(permTypes.CtxApp, a.Name),

})

b := strings.NewReader(`{"process": "p1", "minUnits": 2, "maxUnits": 10, "averageCPU": "600m"}`)

request, err := http.NewRequest("POST", "/apps/myapp/units/autoscale", b)

c.Assert(err, check.IsNil)

request.Header.Set("Authorization", "bearer "+token.GetValue())

request.Header.Set("Content-Type", "application/json")

recorder := httptest.NewRecorder()

s.testServer.ServeHTTP(recorder, request)

if recorder.Code != http.StatusOK {

c.Assert(recorder.Body.String(), check.Equals, "check err")

}

c.Assert(recorder.Code, check.Equals, http.StatusOK)

spec, err := app.AutoScaleInfo(ctx, &a)

c.Assert(err, check.IsNil)

c.Assert(spec, check.DeepEquals, []provTypes.AutoScaleSpec{

{Process: "p1", MinUnits: 2, MaxUnits: 10, AverageCPU: "600m"},

})

c.Assert(eventtest.EventDesc{

Target: appTarget("myapp"),

Owner: token.GetUserName(),

Kind: "app.update.unit.autoscale.add",

StartCustomData: []map[string]any{

{"name": ":app", "value": a.Name},

{"name": "averageCPU", "value": "600m"},

{"name": "process", "value": "p1"},

{"name": "minUnits", "value": "2"},

{"name": "maxUnits", "value": "10"},

},

}, eventtest.HasEvent)

}

func (s *S) TestRemoveAutoScaleUnits(c *check.C) {

ctx := context.Background()

provision.DefaultProvisioner = "autoscaleProv"

provision.Register("autoscaleProv", func() (provision.Provisioner, error) {

return &provisiontest.AutoScaleProvisioner{FakeProvisioner: provisiontest.ProvisionerInstance}, nil

})

defer provision.Unregister("autoscaleProv")

a := appTypes.App{Name: "myapp", Platform: "zend", TeamOwner: s.team.Name}

err := app.CreateApp(context.TODO(), &a, s.user)

c.Assert(err, check.IsNil)

err = app.AutoScale(ctx, &a, provTypes.AutoScaleSpec{

Process: "p1",

AverageCPU: "300m",

MaxUnits: 10,

MinUnits: 2,

})

c.Assert(err, check.IsNil)

token := userWithPermission(c, permTypes.Permission{

Scheme: permission.PermAppUpdate,

Context: permission.Context(permTypes.CtxApp, a.Name),

})

request, err := http.NewRequest("DELETE", "/apps/myapp/units/autoscale?process=p1", nil)

c.Assert(err, check.IsNil)

request.Header.Set("Authorization", "bearer "+token.GetValue())

recorder := httptest.NewRecorder()

s.testServer.ServeHTTP(recorder, request)

c.Assert(recorder.Code, check.Equals, http.StatusOK)

spec, err := app.AutoScaleInfo(ctx, &a)

c.Assert(err, check.IsNil)

c.Assert(spec, check.IsNil)

c.Assert(eventtest.EventDesc{

Target: appTarget("myapp"),

Owner: token.GetUserName(),

Kind: "app.update.unit.autoscale.remove",

StartCustomData: []map[string]any{

{"name": ":app", "value": a.Name},

{"name": "process", "value": "p1"},

},

}, eventtest.HasEvent)

}

func (s *S) TestAddAutoScaleDown(c *check.C) {

ctx := context.Background()

s.mockService.AppQuota.OnGet = func(item *appTypes.App) (*quota.Quota, error) {

c.Assert(item.Name, check.Equals, "myapp")

return &quota.Quota{

Limit: 10,

}, nil

}

provision.DefaultProvisioner = "autoscaleProv"

provision.Register("autoscaleProv", func() (provision.Provisioner, error) {

return &provisiontest.AutoScaleProvisioner{FakeProvisioner: provisiontest.ProvisionerInstance}, nil

})

defer provision.Unregister("autoscaleProv")

a := appTypes.App{Name: "myapp", Platform: "zend", TeamOwner: s.team.Name}

err := app.CreateApp(context.TODO(), &a, s.user)

c.Assert(err, check.IsNil)

token := userWithPermission(c, permTypes.Permission{

Scheme: permission.PermAppUpdate,

Context: permission.Context(permTypes.CtxApp, a.Name),

})

b := strings.NewReader(`{"process": "p1", "minUnits": 2, "maxUnits": 10, "averageCPU": "600m", "behavior": {"scaleDown": {"stabilizationWindow": 10,"percentagePolicyValue": 20, "unitsPolicyValue": 1}}}`)

request, err := http.NewRequest("POST", "/apps/myapp/units/autoscale", b)

c.Assert(err, check.IsNil)

request.Header.Set("Authorization", "bearer "+token.GetValue())

request.Header.Set("Content-Type", "application/json")

recorder := httptest.NewRecorder()

s.testServer.ServeHTTP(recorder, request)

if recorder.Code != http.StatusOK {

c.Assert(recorder.Body.String(), check.Equals, "check err")

}

c.Assert(recorder.Code, check.Equals, http.StatusOK)

spec, err := app.AutoScaleInfo(ctx, &a)

c.Assert(err, check.IsNil)

c.Assert(spec, check.DeepEquals, []provTypes.AutoScaleSpec{

{Process: "p1", MinUnits: 2, MaxUnits: 10, AverageCPU: "600m", Behavior: provTypes.BehaviorAutoScaleSpec{

ScaleDown: &provTypes.ScaleDownPolicy{

StabilizationWindow: ptr.To(int32(10)),

PercentagePolicyValue: ptr.To(int32(20)),

UnitsPolicyValue: ptr.To(int32(1)),

},

}},

})

c.Assert(eventtest.EventDesc{

Target: appTarget("myapp"),

Owner: token.GetUserName(),

Kind: "app.update.unit.autoscale.add",

StartCustomData: []map[string]any{

{"name": ":app", "value": a.Name},

{"name": "averageCPU", "value": "600m"},

{"name": "process", "value": "p1"},

{"name": "minUnits", "value": "2"},

{"name": "maxUnits", "value": "10"},

{"name": "behavior.scaleDown.unitsPolicyValue", "value": "1"},

{"name": "behavior.scaleDown.percentagePolicyValue", "value": "20"},

{"name": "behavior.scaleDown.stabilizationWindow", "value": "10"},

},

}, eventtest.HasEvent)

}