diff --git a/Makefile b/Makefile
index 9d7468888a..2571817ab9 100644
--- a/Makefile
+++ b/Makefile
@@ -240,7 +240,7 @@ gen-model-api-check:
 	which swagger-gen || (GO111MODULE=off go get -u github.com/yunionio/code-generator/cmd/model-api-gen)
 
 gen-model-api:
-	./scripts/codegen.sh model_api
+	./scripts/codegen.py model-api
 
 gen-swagger-check:
 	which swagger || (GO111MODULE=off go get -u github.com/go-swagger/go-swagger/cmd/swagger)
@@ -248,8 +248,8 @@ gen-swagger-check:
 	which swagger-serve || (GO111MODULE=off go get -u github.com/yunionio/code-generator/cmd/swagger-serve)
 
 gen-swagger: gen-swagger-check
-	./scripts/codegen.sh swagger_spec
-	./scripts/codegen.sh swagger_yaml
+	./scripts/codegen.py swagger-code
+	./scripts/codegen.py swagger-yaml
 
 swagger-serve: gen-swagger
-	./scripts/codegen.sh swagger_serve
+	./scripts/codegen.py swagger-serve
diff --git a/pkg/apis/compute/bucket.go b/pkg/apis/compute/bucket.go
index e2a1aabd45..b6c61a2dfb 100644
--- a/pkg/apis/compute/bucket.go
+++ b/pkg/apis/compute/bucket.go
@@ -46,5 +46,6 @@ type BucketCreateInput struct {
 }
 
 type BucketDetail struct {
+	apis.Meta
 	SBucket
 }
diff --git a/pkg/apis/compute/guests.go b/pkg/apis/compute/guests.go
index 469f3a267b..bdbbb8b350 100644
--- a/pkg/apis/compute/guests.go
+++ b/pkg/apis/compute/guests.go
@@ -18,6 +18,55 @@ import (
 	"yunion.io/x/onecloud/pkg/apis"
 )
 
+type ServerListInput struct {
+	apis.BaseListInput
+
+	// 过滤可用区底下的资源
+	Zone string `json:"zone"`
+	// 过滤连接此二层网络的资源
+	Wire string `json:"wire"`
+	// 过滤关联此网络的资源
+	Network string `json:"network"`
+	// Disk ID or Name
+	Disk string `json:"disk"`
+	// Host ID or Name
+	Host string `json:"host"`
+	// Show baremetal servers
+	Baremetal *bool `json:"baremetal"`
+	// Show gpu servers
+	Gpu *bool `json:"gpu"`
+	// Secgroup ID or Name
+	Secgroup string `json:"secgroup"`
+	// AdminSecgroup ID or Name
+	AdminSecgroup string `json:"admin_security"`
+	// Show server of hypervisor choices:"kvm|esxi|container|baremetal|aliyun|azure|aws|huawei|ucloud|zstack|openstack"`
+	Hypervisor string `json:"hypervisor"`
+	// Show servers in cloudregion
+	Region string `json:"region"`
+	// Show Servers with EIP
+	WithEip *bool `json:"with_eip"`
+	// Show Servers without EIP
+	WithoutEip *bool `json:"without_eip"`
+	// OS Type choices:"linux|windows|vmware"`
+	OsType string `json:"os_type"`
+	// Order by disk size choices:"asc|desc"
+	OrderByDisk string `json:"order_by_disk"`
+	// Order by host name choices:"asc|desc"
+	OrderByHost string `json:"order_by_host"`
+	// Vpc id or name
+	Vpc string `json:"vpc"`
+	// Eip id or name
+	UsableServerForEip string `json:"usable_server_for_eip"`
+	// Show Servers without user metadata
+	WithoutUserMeta *bool `json:"without_user_meta"`
+	// Instance Group ID or Name
+	Group string `json:"group"`
+	// Resource type choices:"shared|prepaid|dedicated"
+	ResourceType string `json:"resource_type"`
+	// Billing type choices:"postpaid|prepaid"
+	BillingType string `json:"billing_type"`
+}
+
 type ServerRebuildRootInput struct {
 	apis.Meta
 
diff --git a/pkg/apis/compute/instance_group.go b/pkg/apis/compute/instance_group.go
new file mode 100644
index 0000000000..4e16ef3299
--- /dev/null
+++ b/pkg/apis/compute/instance_group.go
@@ -0,0 +1,22 @@
+package compute
+
+import "yunion.io/x/onecloud/pkg/apis"
+
+type InstanceGroupListInput struct {
+	apis.BaseListInput
+
+	// Filter by service type
+	ServiceType string `json:"service_type"`
+	// Filter by parent id
+	ParentId string `json:"parent_id"`
+	// Filter by zone id
+	ZoneId string `json:"zone_id"`
+	// Filter by guest id or name
+	Guest string `json:"guest"`
+}
+
+type InstanceGroupDetail struct {
+	apis.Meta
+	SGroup
+	GuestCount int64 `json:"guest_count"`
+}
diff --git a/pkg/apis/compute/zz_generated.model.go b/pkg/apis/compute/zz_generated.model.go
index 8a8bd2bbf8..2d35ec5e17 100644
--- a/pkg/apis/compute/zz_generated.model.go
+++ b/pkg/apis/compute/zz_generated.model.go
@@ -190,7 +190,7 @@ type SDBInstance struct {
 	SManagedResourceBase
 	SBillingResourceBase
 	SCloudregionResourceBase
-	DisableDelete         *bool  `json:"disable_delete,omitempty"`
+	SDeletePreventableResourceBase
 	MasterInstanceId      string `json:"master_instance_id"`
 	VcpuCount             int    `json:"vcpu_count"`
 	VmemSizeMb            int    `json:"vmem_size_mb"`
@@ -214,7 +214,7 @@ type SDBInstance struct {
 
 // SDBInstanceAccount is an autogenerated struct via yunion.io/x/onecloud/pkg/compute/models.SDBInstanceAccount.
 type SDBInstanceAccount struct {
-	apis.SVirtualResourceBase
+	apis.SStatusStandaloneResourceBase
 	apis.SExternalizedResourceBase
 	Secret       string `json:"secret"`
 	DBInstanceId string `json:"db_instance_id"`
@@ -238,7 +238,7 @@ type SDBInstanceBackup struct {
 
 // SDBInstanceDatabase is an autogenerated struct via yunion.io/x/onecloud/pkg/compute/models.SDBInstanceDatabase.
 type SDBInstanceDatabase struct {
-	apis.SVirtualResourceBase
+	apis.SStatusStandaloneResourceBase
 	apis.SExternalizedResourceBase
 	CharacterSet string `json:"character_set"`
 	DBInstanceId string `json:"db_instance_id"`
@@ -301,6 +301,11 @@ type SDBInstanceSku struct {
 	ZoneId         string `json:"zone_id"`
 }
 
+// SDeletePreventableResourceBase is an autogenerated struct via yunion.io/x/onecloud/pkg/compute/models.SDeletePreventableResourceBase.
+type SDeletePreventableResourceBase struct {
+	DisableDelete *bool `json:"disable_delete,omitempty"`
+}
+
 // SDisk is an autogenerated struct via yunion.io/x/onecloud/pkg/compute/models.SDisk.
 type SDisk struct {
 	apis.SSharableVirtualResourceBase
@@ -340,10 +345,10 @@ type SElasticcache struct {
 	apis.SExternalizedResourceBase
 	SBillingResourceBase
 	SManagedResourceBase
+	SDeletePreventableResourceBase
 	SCloudregionResourceBase
 	SZoneResourceBase
 	SlaveZones         string `json:"slave_zones"`
-	DisableDelete      *bool  `json:"disable_delete,omitempty"`
 	InstanceType       string `json:"instance_type"`
 	CapacityMB         int    `json:"capacity_mb"`
 	LocalCategory      string `json:"local_category"`
@@ -466,6 +471,21 @@ type SExternalProject struct {
 	apis.SExternalizedResourceBase
 }
 
+// SGlobalNetwork is an autogenerated struct via yunion.io/x/onecloud/pkg/compute/models.SGlobalNetwork.
+type SGlobalNetwork struct {
+	apis.SEnabledStatusStandaloneResourceBase
+	apis.SExternalizedResourceBase
+	SManagedResourceBase
+	Provider string `json:"provider"`
+}
+
+// SGlobalnetworkVpc is an autogenerated struct via yunion.io/x/onecloud/pkg/compute/models.SGlobalnetworkVpc.
+type SGlobalnetworkVpc struct {
+	apis.SJointResourceBase
+	GlobalnetworkId string `json:"globalnetwork_id"`
+	VpcId           string `json:"vpc_id"`
+}
+
 // SGroup is an autogenerated struct via yunion.io/x/onecloud/pkg/compute/models.SGroup.
 type SGroup struct {
 	apis.SVirtualResourceBase
@@ -505,10 +525,10 @@ type SGuest struct {
 	apis.SVirtualResourceBase
 	apis.SExternalizedResourceBase
 	SBillingResourceBase
+	SDeletePreventableResourceBase
 	VcpuCount        int    `json:"vcpu_count"`
 	VmemSize         int    `json:"vmem_size"`
 	BootOrder        string `json:"boot_order"`
-	DisableDelete    *bool  `json:"disable_delete,omitempty"`
 	ShutdownBehavior string `json:"shutdown_behavior"`
 	KeypairId        string `json:"keypair_id"`
 	HostId           string `json:"host_id"`
diff --git a/pkg/apis/parameters.go b/pkg/apis/parameters.go
new file mode 100644
index 0000000000..39d7278331
--- /dev/null
+++ b/pkg/apis/parameters.go
@@ -0,0 +1,77 @@
+package apis
+
+type BaseListInput struct {
+	Meta
+
+	// 查询限制量
+	// default: 20
+	Limit *int `json:"limit"`
+	// 查询偏移量
+	// default: 0
+	Offset *int `json:"offset"`
+	// Name of the field to be ordered by
+	OrderBy []string `json:"order_by"`
+	// List Order
+	// example: desc|asc
+	Order string
+	// Show more details
+	Details *bool `json:"details"`
+	// Filter results by a simple keyword search
+	Search string `json:"search"`
+	// Piggyback metadata information
+	WithMeta *bool `json:"with_meta"`
+	// Filters
+	Filter []string `json:"filters"`
+	// Filters with joint table col; joint_tbl.related_key(origin_key).filter_col.filter_cond(filters)
+	JointFilter []string `json:"joint_filter"`
+	// If true, match if any of the filters matches; otherwise, match if all of the filters match
+	FilterAny *bool `json:"filter_any"`
+	// Is an admin call?
+	Admin *bool `json:"admin"`
+	// Tenant ID or Name
+	Tenant string `json:"tenant"`
+	// Project domain filter
+	ProjectDomain string `json:"project_domain"`
+	// User ID or Name
+	User string `json:"user"`
+	// Show only specified fields
+	Field []string `json:"field"`
+	// Specify query scope, either project, domain or system
+	Scope string `json:"scope"`
+	// Show system resource
+	System *bool `json:"system"`
+	// Show only pending deleted resource
+	PendingDelete *bool `json:"pending_delete"`
+	// Show all resources including pending deleted
+	// TODO: fix this???
+	PendingDeleteAll *bool `json:"-"`
+	// Show all resources including the emulated resources
+	ShowEmulated *bool `json:"show_emulated"`
+	// Export field keys
+	ExportKeys string `json:"export_keys"`
+
+	// TODO: support this tags
+	// Tags      []string `help:"Tags info, eg: hypervisor=aliyun, os_type=Linux, os_version" json:"-"`
+	// UserTags  []string `help:"UserTags info, eg: group=rd" json:"-"`
+	// CloudTags []string `help:"CloudTags info, eg: price_key=cn-beijing" json:"-"`
+	// List objects belonging to the cloud provider
+	Manager string `json:"manager,omitempty"`
+	// List objects belonging to the cloud account
+	Account string `json:"account,omitempty"`
+	// List objects from the provider, choices:"OneCloud|VMware|Aliyun|Qcloud|Azure|Aws|Huawei|OpenStack|Ucloud|ZStack"
+	Provider []string `json:"provider,omitempty"`
+	// List objects belonging to a special brand
+	Brand []string `json:"brand"`
+	// Cloud environment, choices:"public|private|onpremise|private_or_onpremise"
+	CloudEnv string `json:"cloud_env,omitempty"`
+	// List objects belonging to public cloud
+	PublicCloud *bool `json:"public_cloud"`
+	// List objects belonging to private cloud
+	PrivateCloud *bool `json:"private_cloud"`
+	// List objects belonging to on premise infrastructures
+	IsOnPremise *bool `json:"is_on_premise"`
+	// List objects managed by external providers
+	IsManaged *bool `json:"is_managed"`
+	// Marker for pagination
+	PagingMarker string `json:"paging_marker"`
+}
diff --git a/pkg/cloudcommon/db/db_dispatcher.go b/pkg/cloudcommon/db/db_dispatcher.go
index 1bd79a1b62..9e75a525f1 100644
--- a/pkg/cloudcommon/db/db_dispatcher.go
+++ b/pkg/cloudcommon/db/db_dispatcher.go
@@ -724,15 +724,15 @@ func getItemDetails(manager IModelManager, item IModel, ctx context.Context, use
 
 	jsonDict := jsonutils.Marshal(item).(*jsonutils.JSONDict)
 	jsonDict = jsonDict.CopyIncludes(getFields...)
-	jsonDict.Update(extraDict)
+	extraDict.Update(jsonDict)
 	// jsonDict = getModelExtraDetails(item, ctx, jsonDict)
 
 	extraRows := manager.FetchCustomizeColumns(ctx, userCred, query, []IModel{item}, stringutils2.NewSortedStrings(fieldFilter))
 	if len(extraRows) == 1 {
-		jsonDict.Update(extraRows[0])
+		extraDict.Update(extraRows[0])
 	}
 
-	return jsonDict, nil
+	return extraDict, nil
 }
 
 func (dispatcher *DBModelDispatcher) tryGetModelProperty(ctx context.Context, property string, query jsonutils.JSONObject) (jsonutils.JSONObject, error) {
diff --git a/pkg/compute/models/groups.go b/pkg/compute/models/groups.go
index cb346425fa..1e1d0ede7b 100644
--- a/pkg/compute/models/groups.go
+++ b/pkg/compute/models/groups.go
@@ -27,6 +27,7 @@ import (
 	"yunion.io/x/pkg/util/sets"
 	"yunion.io/x/sqlchemy"
 
+	api "yunion.io/x/onecloud/pkg/apis/compute"
 	"yunion.io/x/onecloud/pkg/cloudcommon/db"
 	"yunion.io/x/onecloud/pkg/httperrors"
 	"yunion.io/x/onecloud/pkg/mcclient"
@@ -73,9 +74,8 @@ type SGroup struct {
 }
 
 func (sm *SGroupManager) ListItemFilter(ctx context.Context, q *sqlchemy.SQuery, userCred mcclient.TokenCredential,
-	query jsonutils.JSONObject) (*sqlchemy.SQuery, error) {
-
-	guestFilter := jsonutils.GetAnyString(query, []string{"server", "guest"})
+	input *api.InstanceGroupListInput) (*sqlchemy.SQuery, error) {
+	guestFilter := input.Guest
 	if len(guestFilter) != 0 {
 		guestObj, err := GuestManager.FetchByIdOrName(userCred, guestFilter)
 		if err != nil {
@@ -91,11 +91,11 @@ func (group *SGroup) GetCustomizeColumns(ctx context.Context, userCred mcclient.
 	query jsonutils.JSONObject) *jsonutils.JSONDict {
 	extra := group.SVirtualResourceBase.GetCustomizeColumns(ctx, userCred, query)
 	ret, _ := group.getMoreDetails(ctx, userCred, extra)
-	return ret
+	return ret.JSON(ret)
 }
 
 func (group *SGroup) GetExtraDetails(ctx context.Context, userCred mcclient.TokenCredential,
-	query jsonutils.JSONObject) (*jsonutils.JSONDict, error) {
+	query jsonutils.JSONObject) (*api.InstanceGroupDetail, error) {
 	extra, err := group.SVirtualResourceBase.GetExtraDetails(ctx, userCred, query)
 	if err != nil {
 		return nil, err
@@ -104,12 +104,15 @@ func (group *SGroup) GetExtraDetails(ctx context.Context, userCred mcclient.Toke
 }
 
 func (group *SGroup) getMoreDetails(ctx context.Context, userCred mcclient.TokenCredential,
-	query jsonutils.JSONObject) (*jsonutils.JSONDict, error) {
-	ret := query.(*jsonutils.JSONDict)
+	data jsonutils.JSONObject) (*api.InstanceGroupDetail, error) {
+	ret := data.(*jsonutils.JSONDict)
 	q := GroupguestManager.Query().Equals("group_id", group.Id)
 	count, _ := q.CountWithError()
 	ret.Add(jsonutils.NewInt(int64(count)), "guest_count")
-	return ret, nil
+	output := new(api.InstanceGroupDetail)
+	data.Unmarshal(ret)
+	log.Errorf("output is %#v", output)
+	return output, nil
 }
 
 func (group *SGroup) ValidateDeleteCondition(ctx context.Context) error {
diff --git a/pkg/compute/models/guests.go b/pkg/compute/models/guests.go
index 8f3bc641b1..462a386731 100644
--- a/pkg/compute/models/guests.go
+++ b/pkg/compute/models/guests.go
@@ -127,6 +127,7 @@ func (manager *SGuestManager) AllowListItems(ctx context.Context, userCred mccli
 	return manager.SVirtualResourceBaseManager.AllowListItems(ctx, userCred, query)
 }
 
+// 按指定条件列出云主机实例
 func (manager *SGuestManager) ListItemFilter(ctx context.Context, q *sqlchemy.SQuery, userCred mcclient.TokenCredential, query jsonutils.JSONObject) (*sqlchemy.SQuery, error) {
 	queryDict, ok := query.(*jsonutils.JSONDict)
 	if !ok {
diff --git a/scripts/codegen.py b/scripts/codegen.py
new file mode 100755
index 0000000000..fd294c982e
--- /dev/null
+++ b/scripts/codegen.py
@@ -0,0 +1,241 @@
+#!/usr/bin/env python
+
+import argparse
+import os
+from os.path import join as pjoin
+import subprocess
+import sys
+
+
+def run_cmd(cmds):
+    print(' '.join(cmds))
+    proc = subprocess.Popen(
+        cmds, stdout=subprocess.PIPE)
+    while True:
+        line_gen = proc.stdout.readline().rstrip()
+        if not line_gen:
+            break
+        for l in line_gen:
+            print(l)
+
+
+def run_generator(tool, input_dirs, out_pkg):
+    cmd = [tool]
+    for i in input_dirs:
+        cmd.extend(["--input-dirs", i])
+    cmd.extend(["--output-package", out_pkg])
+    run_cmd(cmd)
+
+
+def run_model_api(input_dirs, out_pkg):
+    return run_generator('model-api-gen', input_dirs, out_pkg)
+
+
+def run_swagger_gen(input_dirs, out_pkg):
+    return run_generator('swagger-gen', input_dirs, out_pkg)
+
+
+def run_swagger_serve(output_dir):
+    def is_swagger_yaml(file):
+        return file.endswith('.yaml') and file.startswith('swagger')
+    yamls = [pjoin(output_dir, x) for x in os.listdir(output_dir) if is_swagger_yaml(x)]
+    cmd = ['swagger-serve', 'generate']
+    cmd.extend(['-i', ','.join(yamls), '-o', output_dir])
+    cmd.append('--serve')
+    run_cmd(cmd)
+
+
+def run_swagger_yaml(svc, swagger_pkg_dir, output_dir):
+    if not os.path.exists(output_dir):
+        os.makedirs(output_dir)
+    work_dir = pjoin(swagger_pkg_dir, svc)
+    cmd = ["swagger", "generate", "spec", "--scan-models"]
+    cmd.extend(["--work-dir", work_dir])
+    cmd.extend(["-o", pjoin(output_dir, "swagger_%s.yaml" % svc)])
+    run_cmd(cmd)
+
+
+class FuncDispatcher(object):
+
+    def __init__(self):
+        self.gen_dict = {}
+        self.collect_funcs()
+
+    def collect_funcs(self):
+        gen_dict = {}
+        for attr in dir(self):
+            if not attr.startswith('gen_'):
+                continue
+            func = getattr(self, attr)
+            if not callable(func):
+                continue
+            svc = attr.lstrip('gen_')
+            gen_dict[svc] = func
+        self.gen_dict = gen_dict
+
+    def get_choices(self):
+        svc = ["all"]
+        svc.extend(self.gen_dict.keys())
+        return svc
+
+    def dispatcher(self, opt):
+        def run_one(key):
+            self.gen_dict[key]()
+        def run_all():
+            for key in self.gen_dict:
+                run_one(key)
+        if opt.service is None or 'all' in opt.service:
+            run_all()
+        else:
+            for svc in opt.service:
+                run_one(svc)
+
+    def get_parser(self, subparsers, name, help):
+        parser = subparsers.add_parser(name, help=help)
+        parser.add_argument("-s", "--service", help="%s for services" % help,
+                            nargs='+', choices=self.get_choices())
+        parser.set_defaults(func=self.dispatcher)
+
+
+class ModelAPI(FuncDispatcher):
+
+    def __init__(self, pkg_dir, apis_dir):
+        super(ModelAPI, self).__init__()
+        self.pkg_dir = pkg_dir
+        self.apis_dir = apis_dir
+
+    def get_parser(self, subparsers):
+        return super(ModelAPI, self).get_parser(
+            subparsers, "model-api", "generate model struct code for api")
+
+    def run(self, pkg=[], out=[]):
+        if pkg is None:
+            return
+        in_dir = pjoin(self.pkg_dir, *pkg)
+        out_dir = pjoin(self.apis_dir, *out)
+        run_model_api([in_dir], out_dir)
+
+    def run_same(self, pkg):
+        self.run(pkg=[pkg], out=[pkg])
+
+    def run_model(self, svc):
+        self.run(pkg=[svc, "models"], out=[svc])
+
+    def gen_cloudcommon(self):
+        self.run(pkg=["cloudcommon", "db"])
+
+    def gen_cloudprovider(self):
+        self.run_same("cloudprovider")
+
+    def gen_compute(self):
+        self.run_model("compute")
+
+    def gen_image(self):
+        self.run_model("image")
+
+    def gen_identity(self):
+        self.run(pkg=["keystone", "models"], out=["identity"])
+
+
+class SwaggerCode(FuncDispatcher):
+
+    def __init__(self, pkg_dir, pkg_swagger):
+        super(SwaggerCode, self).__init__()
+        self.pkg_dir = pkg_dir
+        self.pkg_swagger = pkg_swagger
+
+    def get_parser(self, subparsers):
+        return super(SwaggerCode, self).get_parser(
+                subparsers, "swagger-code", "generate swagger code")
+
+    def run(self, svc, pkg=[], out=''):
+        if svc is None:
+            return
+        if pkg is None:
+            return
+        svc_pkg_dir = pjoin(self.pkg_dir, svc)
+        input_dirs = [pjoin(svc_pkg_dir, x) for x in pkg]
+        out_dir = pjoin(self.pkg_swagger, out)
+        run_swagger_gen(input_dirs, out_dir)
+
+    def run_svc(self, svc, pkg=[]):
+        self.run(svc, pkg=pkg, out=svc)
+
+    def gen_identity(self):
+        self.run("keystone", pkg=["tokens", "models"], out="identity")
+
+    def gen_compute(self):
+        self.run_svc("compute", pkg=["models"])
+
+    def gen_image(self):
+        self.run_svc("image", pkg=["models"])
+
+
+class SwaggerYAML(FuncDispatcher):
+
+    def __init__(self, swagger_dir, out_dir):
+        super(SwaggerYAML, self).__init__()
+        self.swagger_dir = swagger_dir
+        self.out_dir = out_dir
+
+    def get_parser(self, subparsers):
+        return super(SwaggerYAML, self).get_parser(
+                subparsers, "swagger-yaml", "generate swagger yaml")
+
+    def run(self, svc):
+        run_swagger_yaml(svc, self.swagger_dir, self.out_dir)
+
+    def gen_identity(self):
+        self.run("identity")
+
+    def gen_compute(self):
+        self.run("compute")
+
+    def gen_image(self):
+        self.run("image")
+
+
+class SwaggerServe(object):
+
+    def __init__(self, output_dir):
+        self.output_dir = output_dir
+
+    def get_parser(self, subparsers):
+        parser = subparsers.add_parser(
+                "swagger-serve", help="generate swagger web site")
+        parser.set_defaults(func=self.run)
+
+    def run(self, opt):
+        run_swagger_serve(self.output_dir)
+
+
+if __name__ == "__main__":
+    ONECLOUD="yunion.io/x/onecloud"
+    PKG_ONECLOUD=pjoin(ONECLOUD, "pkg")
+    PKG_APIS=pjoin(PKG_ONECLOUD, "apis")
+    PKG_GENERATED=pjoin(PKG_ONECLOUD, "generated")
+    PKG_SWAGGER=pjoin(PKG_GENERATED, "swagger")
+    SCRIPTS_DIR=os.path.dirname(os.path.realpath(__file__))
+    CUR_DIR=os.path.dirname(SCRIPTS_DIR)
+    SWAGGER_PKG=pjoin(CUR_DIR, "pkg", "generated", "swagger")
+    OUTPUT_DIR=pjoin(CUR_DIR, "_output")
+    OUTPUT_SWAGGER_DIR=pjoin(OUTPUT_DIR, "swagger")
+
+    model_api = ModelAPI(PKG_ONECLOUD, PKG_APIS)
+    swagger_yaml = SwaggerYAML(SWAGGER_PKG, OUTPUT_SWAGGER_DIR)
+    swagger_code = SwaggerCode(PKG_ONECLOUD, PKG_SWAGGER)
+    swagger_serve = SwaggerServe(OUTPUT_SWAGGER_DIR)
+
+    parser = argparse.ArgumentParser(description="Code generate helper.")
+    subparsers = parser.add_subparsers(dest='cmd')
+    subparsers.required = True
+
+    for cmd in [model_api, swagger_code, swagger_yaml, swagger_serve]:
+        cmd.get_parser(subparsers)
+
+    if len(sys.argv) == 1:
+        parser.print_help()
+        sys.exit(1)
+
+    options = parser.parse_args()
+    options.func(options)
diff --git a/scripts/codegen.sh b/scripts/codegen.sh
deleted file mode 100755
index 0c36593df9..0000000000
--- a/scripts/codegen.sh
+++ /dev/null
@@ -1,104 +0,0 @@
-#!/bin/bash
-
-set -o errexit
-set -o pipefail
-
-ONECLOUD="yunion.io/x/onecloud"
-PKG_ONECLOUD="$ONECLOUD/pkg"
-PKG_APIS="$PKG_ONECLOUD/apis"
-PKG_GENERATED="$PKG_ONECLOUD/generated"
-PKG_SWAGGER="$PKG_GENERATED/swagger"
-
-MODEL_API_PKG_MAP=(
-    "$PKG_ONECLOUD/cloudcommon/db:$PKG_APIS"
-    "$PKG_ONECLOUD/cloudprovider:$PKG_APIS/cloudprovider"
-    "$PKG_ONECLOUD/compute/models:$PKG_APIS/compute"
-    "$PKG_ONECLOUD/image/models:$PKG_APIS/image"
-    "$PKG_ONECLOUD/keystone/models:$PKG_APIS/identity"
-)
-
-MODEL_SWAGGER_PKG_MAP=(
-    "$PKG_ONECLOUD/compute/models:$PKG_SWAGGER/compute"
-    "$PKG_ONECLOUD/image/models:$PKG_SWAGGER/image"
-    "$PKG_ONECLOUD/keystone/models:$PKG_SWAGGER/identity"
-)
-
-CURDIR="$(dirname $(dirname $0))"
-DOCS_DIR="$CURDIR/docs"
-OUTPUT_DIR="$CURDIR/_output"
-OUTPUT_SWAGGER_DIR="$OUTPUT_DIR/swagger"
-
-generate_model_api() {
-    for pkg_path in "${MODEL_API_PKG_MAP[@]}"; do
-        model_pkg="${pkg_path%%:*}"
-        api_pkg="${pkg_path##*:}"
-        model-api-gen \
-            --input-dirs $model_pkg \
-            --output-package $api_pkg
-    done
-}
-
-generate_swagger_spec() {
-#    for pkg_path in "${MODEL_SWAGGER_PKG_MAP[@]}"; do
-#        model_pkg="${pkg_path%%:*}"
-#        swaager_pkg="${pkg_path##*:}"
-#        swagger-gen \
-#            --input-dirs $model_pkg \
-#            --output-package $swaager_pkg
-#    done
-    swagger-gen \
-        -i "$PKG_ONECLOUD/compute/models" \
-        -p "$PKG_SWAGGER/compute"
-
-    swagger-gen \
-        -i "$PKG_ONECLOUD/image/models" \
-        -p "$PKG_SWAGGER/image"
-
-    swagger-gen \
-        -i "$PKG_ONECLOUD/keystone/tokens" \
-        -i "$PKG_ONECLOUD/keystone/models" \
-        -p "$PKG_SWAGGER/identity"
-}
-
-generate_swagger_yaml() {
-    mkdir -p "$OUTPUT_SWAGGER_DIR"
-    for pkg_path in "${MODEL_SWAGGER_PKG_MAP[@]}"; do
-        model_pkg="${pkg_path%%:*}"
-        swaager_pkg="${pkg_path##*:}"
-        work_dir=${swaager_pkg#"$ONECLOUD"}
-        GO111MODULE=off swagger generate spec \
-            --scan-models \
-            --work-dir="$CURDIR/$work_dir" \
-            -o "$OUTPUT_SWAGGER_DIR/swagger_$(basename $swaager_pkg).yaml"
-    done
-}
-
-generate_swagger_serve() {
-    input_files="$(find $OUTPUT_SWAGGER_DIR -name 'swagger_*.yaml' -type f | paste -sd,)"
-    swagger-serve generate -i "$input_files" -o "$OUTPUT_SWAGGER_DIR" --serve
-}
-
-show_help() {
-    cat <<EOF
-usage: $(basename $0) <subcommand>
-Subcommands:
-    model_api: genereate model struct code
-    swagger_spec: generate swagger spec code
-    swagger_serve: generate swagger web site
-EOF
-}
-
-subcmd=$1
-case $subcmd in
-    "" | "-h" | "--help")
-        show_help
-        ;;
-    *)
-        shift
-        generate_${subcmd} $@
-        if [ $? = 127 ]; then
-            echo "Run --help for a list of known subcommands." >&2
-            exit 1
-        fi
-        ;;
-esac