/
vnet.go
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/
vnet.go
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// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
package vnet
import (
"context"
"fmt"
"net"
vnetwork "github.com/Azure/azure-sdk-for-go/services/network/mgmt/2019-09-01/network"
"github.com/Azure/go-autorest/autorest"
"github.com/Azure/go-autorest/autorest/to"
azurev1alpha1 "github.com/Azure/azure-service-operator/api/v1alpha1"
"github.com/Azure/azure-service-operator/pkg/resourcemanager/config"
"github.com/Azure/azure-service-operator/pkg/resourcemanager/iam"
"github.com/Azure/azure-service-operator/pkg/telemetry"
)
// AzureVNetManager is the struct that the manager functions hang off
type AzureVNetManager struct {
Creds config.Credentials
Telemetry telemetry.Telemetry
}
// getVNetClient returns a new instance of an VirtualNetwork client
func getVNetClient(creds config.Credentials) (vnetwork.VirtualNetworksClient, error) {
client := vnetwork.NewVirtualNetworksClientWithBaseURI(config.BaseURI(), creds.SubscriptionID())
a, err := iam.GetResourceManagementAuthorizer(creds)
if err != nil {
client = vnetwork.VirtualNetworksClient{}
} else {
client.Authorizer = a
client.AddToUserAgent(config.UserAgent())
}
return client, err
}
// CreateVNet creates VNets
func (m *AzureVNetManager) CreateVNet(ctx context.Context, location string, resourceGroupName string, resourceName string, addressSpace string, subnets []azurev1alpha1.VNetSubnets) (vnetwork.VirtualNetwork, error) {
client, err := getVNetClient(m.Creds)
if err != nil {
return vnetwork.VirtualNetwork{}, err
}
var subnetsToAdd []vnetwork.Subnet
for i := 0; i < len(subnets); i++ {
eps := []vnetwork.ServiceEndpointPropertiesFormat{}
for _, ep := range subnets[i].ServiceEndpoints {
eps = append(eps, vnetwork.ServiceEndpointPropertiesFormat{
Service: to.StringPtr(ep),
})
}
s := vnetwork.Subnet{
Name: &subnets[i].SubnetName,
SubnetPropertiesFormat: &vnetwork.SubnetPropertiesFormat{
AddressPrefix: &subnets[i].SubnetAddressPrefix,
ServiceEndpoints: &eps,
},
}
subnetsToAdd = append(subnetsToAdd, s)
}
var future vnetwork.VirtualNetworksCreateOrUpdateFuture
future, err = client.CreateOrUpdate(
ctx,
resourceGroupName,
resourceName,
vnetwork.VirtualNetwork{
Location: &location,
VirtualNetworkPropertiesFormat: &vnetwork.VirtualNetworkPropertiesFormat{
AddressSpace: &vnetwork.AddressSpace{
AddressPrefixes: &[]string{addressSpace},
},
Subnets: &subnetsToAdd,
},
},
)
if err != nil {
return vnetwork.VirtualNetwork{}, err
}
return future.Result(client)
}
// DeleteVNet deletes a VNet
func (m *AzureVNetManager) DeleteVNet(ctx context.Context, resourceGroupName string, resourceName string) (autorest.Response, error) {
client, err := getVNetClient(m.Creds)
if err != nil {
return autorest.Response{}, err
}
future, err := client.Delete(
ctx,
resourceGroupName,
resourceName,
)
if err != nil {
return autorest.Response{}, err
}
return future.Result(client)
}
// GetVNet gets a VNet
func (m *AzureVNetManager) GetVNet(ctx context.Context, resourceGroupName string, resourceName string) (vNet vnetwork.VirtualNetwork, err error) {
client, err := getVNetClient(m.Creds)
if err != nil {
return vnetwork.VirtualNetwork{}, err
}
return client.Get(ctx, resourceGroupName, resourceName, "")
}
func (m *AzureVNetManager) GetAvailableIP(ctx context.Context, resourceGroup, vnet, subnet string) (string, error) {
client, err := getVNetClient(m.Creds)
if err != nil {
return "", err
}
sclient := NewAzureSubnetManager(m.Creds)
sub, err := sclient.Get(ctx, resourceGroup, vnet, subnet)
if err != nil {
return "", err
}
if sub.SubnetPropertiesFormat == nil {
return "", fmt.Errorf("could not find subnet '%s'", subnet)
}
prefix := *sub.AddressPrefix
ip, _, err := net.ParseCIDR(prefix)
if err != nil {
return "", err
}
result, err := client.CheckIPAddressAvailability(ctx, resourceGroup, vnet, ip.String())
if err != nil {
return "", err
}
if result.AvailableIPAddresses == nil || len(*result.AvailableIPAddresses) == 0 {
return "", fmt.Errorf("No available IP addresses in vnet %s", vnet)
}
return (*result.AvailableIPAddresses)[0], nil
}