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Add tencent cloud VPC network support
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,7 @@ | ||
| # TencentCloud VPC Backend for Flannel | ||
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| There are only two differences between the usage method and Alibaba Cloud: | ||
| 1. Tencent Cloud needs to create a routing table, while Alibaba Cloud creates a switch | ||
| 2. In network/config, backend-type is "tencent-vpc" | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,211 @@ | ||
| // Copyright 2015 flannel authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
| // +build !windows | ||
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| package tencentvpc | ||
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| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
| "github.com/flannel-io/flannel/backend" | ||
| "github.com/flannel-io/flannel/pkg/ip" | ||
| "github.com/flannel-io/flannel/subnet" | ||
| "github.com/tencentcloud/tencentcloud-sdk-go/tencentcloud/common" | ||
| "github.com/tencentcloud/tencentcloud-sdk-go/tencentcloud/common/errors" | ||
| vpc "github.com/tencentcloud/tencentcloud-sdk-go/tencentcloud/vpc/v20170312" | ||
| "golang.org/x/net/context" | ||
| "io/ioutil" | ||
| log "k8s.io/klog" | ||
| "net/http" | ||
| "os" | ||
| "sync" | ||
| ) | ||
|
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| func init() { | ||
| backend.Register("tencent-vpc", New) | ||
| } | ||
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| type TencentVpcBackend struct { | ||
| sm subnet.Manager | ||
| extIface *backend.ExternalInterface | ||
| } | ||
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| func New(sm subnet.Manager, extIface *backend.ExternalInterface) (backend.Backend, error) { | ||
| be := TencentVpcBackend{ | ||
| sm: sm, | ||
| extIface: extIface, | ||
| } | ||
| return &be, nil | ||
| } | ||
|
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| func get_vm_metadata(url string) (string, error) { | ||
| resp, err := http.Get(url) | ||
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| if err != nil || resp.StatusCode != http.StatusOK { | ||
| return "", fmt.Errorf("get vm region error: %v", err) | ||
| } | ||
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| defer resp.Body.Close() | ||
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| metadata, _ := ioutil.ReadAll(resp.Body) | ||
| return string(metadata), nil | ||
| } | ||
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| func get_vm_region() (string, error) { | ||
| url := "http://metadata.tencentyun.com/latest/meta-data/placement/region" | ||
| return get_vm_metadata(url) | ||
| } | ||
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| func get_vm_vpcid() (string, error) { | ||
| macUrl := "http://metadata.tencentyun.com/latest/meta-data/mac" | ||
| mac, err := get_vm_metadata(macUrl) | ||
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| if err != nil { | ||
| return "", fmt.Errorf("get vm mac error: %v", err) | ||
| } | ||
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| vpcUrl := fmt.Sprintf("http://metadata.tencentyun.com/latest/meta-data/network/interfaces/macs/%s/vpc-id", mac) | ||
| vpcid, err := get_vm_metadata(vpcUrl) | ||
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| if err != nil { | ||
| return "", fmt.Errorf("get vm vpcid error: %v", err) | ||
| } | ||
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| return vpcid, nil | ||
| } | ||
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| func (be *TencentVpcBackend) RegisterNetwork(ctx context.Context, wg *sync.WaitGroup, config *subnet.Config) (backend.Network, error) { | ||
| // 1. Parse our configuration | ||
| cfg := struct { | ||
| AccessKeyID string | ||
| AccessKeySecret string | ||
| }{} | ||
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| if len(config.Backend) > 0 { | ||
| if err := json.Unmarshal(config.Backend, &cfg); err != nil { | ||
| return nil, fmt.Errorf("error decoding VPC backend config: %v", err) | ||
| } | ||
| } | ||
| log.Infof("Unmarshal Configure : %v\n", cfg) | ||
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| // 2. Acquire the lease form subnet manager | ||
| attrs := subnet.LeaseAttrs{ | ||
| PublicIP: ip.FromIP(be.extIface.ExtAddr), | ||
| } | ||
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| l, err := be.sm.AcquireLease(ctx, &attrs) | ||
| switch err { | ||
| case nil: | ||
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| case context.Canceled, context.DeadlineExceeded: | ||
| return nil, err | ||
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| default: | ||
| return nil, fmt.Errorf("failed to acquire lease: %v", err) | ||
| } | ||
| if cfg.AccessKeyID == "" || cfg.AccessKeySecret == "" { | ||
| cfg.AccessKeyID = os.Getenv("ACCESS_KEY_ID") | ||
| cfg.AccessKeySecret = os.Getenv("ACCESS_KEY_SECRET") | ||
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| if cfg.AccessKeyID == "" || cfg.AccessKeySecret == "" { | ||
| return nil, fmt.Errorf("ACCESS_KEY_ID and ACCESS_KEY_SECRET must be provided! ") | ||
| } | ||
| } | ||
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| region, err := get_vm_region() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| vpcid, err := get_vm_vpcid() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
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| c, _ := vpc.NewClientWithSecretId(cfg.AccessKeyID, cfg.AccessKeySecret, region) | ||
| request := vpc.NewDescribeRouteTablesRequest() | ||
| request.Filters = []*vpc.Filter{ | ||
| &vpc.Filter{ | ||
| Name: common.StringPtr("vpc-id"), | ||
| Values: common.StringPtrs([]string{vpcid}), | ||
| }, | ||
| } | ||
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| res, err := c.DescribeRouteTables(request) | ||
| if _, ok := err.(*errors.TencentCloudSDKError); ok { | ||
| return nil, fmt.Errorf("describe route table error: %v", ok) | ||
| } | ||
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| if err != nil { | ||
| return nil, err | ||
| } | ||
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| response := res.Response | ||
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| if len(response.RouteTableSet) <= 0 { | ||
| return nil, fmt.Errorf("No suitable routing table found") | ||
| } | ||
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| routeTable := response.RouteTableSet[0] | ||
| exists := false | ||
| gatewayType := "NORMAL_CVM" | ||
| routeType := "USER" | ||
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| for _, route := range routeTable.RouteSet { | ||
| if *route.DestinationCidrBlock == l.Subnet.String() && | ||
| *route.GatewayId == be.extIface.ExtAddr.String() && | ||
| *route.GatewayType == gatewayType && | ||
| *route.RouteType == routeType { | ||
| if *route.Enabled { | ||
| exists = true | ||
| } else { | ||
| delRouteRequest := vpc.NewDeleteRoutesRequest() | ||
| delRouteRequest.RouteTableId = routeTable.RouteTableId | ||
| delRouteRequest.Routes = []*vpc.Route{ | ||
| &vpc.Route{ | ||
| RouteId: route.RouteId, | ||
| }, | ||
| } | ||
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| _, err := c.DeleteRoutes(delRouteRequest) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| if !exists { | ||
| createRouteRequest := vpc.NewCreateRoutesRequest() | ||
| createRouteRequest.RouteTableId = routeTable.RouteTableId | ||
| createRouteRequest.Routes = []*vpc.Route{ | ||
| &vpc.Route{ | ||
| DestinationCidrBlock: common.StringPtr(l.Subnet.String()), | ||
| GatewayType: &gatewayType, | ||
| GatewayId: common.StringPtr(be.extIface.ExtAddr.String()), | ||
| Enabled: common.BoolPtr(true), | ||
| }, | ||
| } | ||
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| _, err := c.CreateRoutes(createRouteRequest) | ||
|
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| if err != nil { | ||
| return nil, err | ||
| } | ||
| } | ||
|
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| return &backend.SimpleNetwork{ | ||
| SubnetLease: l, | ||
| ExtIface: be.extIface, | ||
| }, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| // Copyright 2015 flannel authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package tencentvpc | ||
|
|
||
| import ( | ||
| log "k8s.io/klog" | ||
| ) | ||
|
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| func init() { | ||
| log.Infof("TencentVpc is not supported on this platform") | ||
| } |
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