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feat: add support for clusters in multiple regions
Adding `ClientProvider` allows clusters to use different `OCIClients` groups to interact with the regional APIs.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,169 @@ | ||
| /* | ||
| Copyright (c) 2021, 2022 Oracle and/or its affiliates. | ||
| 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 scope | ||
|
|
||
| import ( | ||
| "sync" | ||
|
|
||
| "github.com/go-logr/logr" | ||
| "github.com/oracle/cluster-api-provider-oci/cloud/config" | ||
| "github.com/oracle/cluster-api-provider-oci/cloud/ociutil" | ||
| "github.com/oracle/cluster-api-provider-oci/cloud/services/compute" | ||
| "github.com/oracle/cluster-api-provider-oci/cloud/services/vcn" | ||
| "github.com/oracle/oci-go-sdk/v63/common" | ||
| "github.com/oracle/oci-go-sdk/v63/core" | ||
| "github.com/oracle/oci-go-sdk/v63/identity" | ||
| "github.com/oracle/oci-go-sdk/v63/networkloadbalancer" | ||
| "github.com/pkg/errors" | ||
| "k8s.io/klog/v2/klogr" | ||
| ) | ||
|
|
||
| // OCIClients is the struct of all the needed OCI clients | ||
| type OCIClients struct { | ||
| ComputeClient compute.ComputeClient | ||
| VCNClient vcn.Client | ||
| LoadBalancerClient *networkloadbalancer.NetworkLoadBalancerClient | ||
| IdentityClient *identity.IdentityClient | ||
| } | ||
|
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| // ClientProvider defines the regional clients | ||
| type ClientProvider struct { | ||
| *logr.Logger | ||
| ociClients map[string]OCIClients | ||
| ociClientsLock *sync.RWMutex | ||
| ociAuthConfigProvider common.ConfigurationProvider | ||
| authConfig *config.AuthConfig | ||
| } | ||
|
|
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| // NewClientProvider builds the ClientProvider with a client for the given region | ||
| func NewClientProvider(authConfig *config.AuthConfig) (*ClientProvider, error) { | ||
| if err := ociutil.ValidateAuthConfig(authConfig); err != nil { | ||
| return nil, errors.Wrapf(err, "NewClientProvider authConfig is invalid") | ||
| } | ||
|
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| log := klogr.New() | ||
|
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| ociAuthConfigProvider, err := config.NewConfigurationProvider(authConfig) | ||
| if err != nil { | ||
| log.Error(err, "authentication provider could not be initialised") | ||
| return nil, err | ||
| } | ||
|
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| provider := ClientProvider{ | ||
| Logger: &log, | ||
| ociAuthConfigProvider: ociAuthConfigProvider, | ||
| ociClients: map[string]OCIClients{}, | ||
| ociClientsLock: new(sync.RWMutex), | ||
| authConfig: authConfig, | ||
| } | ||
| _, err = provider.GetOrBuildClient(authConfig.Region) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
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| return &provider, nil | ||
| } | ||
|
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| // GetOrBuildClient if the OCIClients exist for the region they are returned, if not clients will build them | ||
| func (c *ClientProvider) GetOrBuildClient(region string) (OCIClients, error) { | ||
| if len(region) <= 0 { | ||
| return OCIClients{}, errors.New("ClientProvider.GetOrBuildClient region can not be empty") | ||
| } | ||
|
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| c.ociClientsLock.RLock() | ||
| clients, regionalClientsExists := c.ociClients[region] | ||
| c.ociClientsLock.RUnlock() | ||
|
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| if regionalClientsExists { | ||
| return clients, nil | ||
| } | ||
|
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| regionalAuth := c.authConfig | ||
| regionalAuth.Region = region | ||
| ociAuthConfigProvider, err := config.NewConfigurationProvider(regionalAuth) | ||
| if err != nil { | ||
| return OCIClients{}, err | ||
| } | ||
|
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| c.ociClientsLock.Lock() | ||
| defer c.ociClientsLock.Unlock() | ||
| regionalClient, err := createClients(ociAuthConfigProvider, c.Logger) | ||
| if err != nil { | ||
| return regionalClient, err | ||
| } | ||
| c.ociClients[region] = regionalClient | ||
|
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| return regionalClient, nil | ||
| } | ||
|
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| func createClients(oCIAuthConfigProvider common.ConfigurationProvider, logger *logr.Logger) (OCIClients, error) { | ||
| vcnClient, err := createVncClient(oCIAuthConfigProvider, logger) | ||
| lbClient, err := createLbClient(oCIAuthConfigProvider, logger) | ||
| identityClient, err := createIdentityClient(oCIAuthConfigProvider, logger) | ||
| computeClient, err := createComputeClient(oCIAuthConfigProvider, logger) | ||
|
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| if err != nil { | ||
| return OCIClients{}, err | ||
| } | ||
|
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| return OCIClients{ | ||
| VCNClient: vcnClient, | ||
| LoadBalancerClient: lbClient, | ||
| IdentityClient: identityClient, | ||
| ComputeClient: computeClient, | ||
| }, err | ||
| } | ||
|
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| func createVncClient(ociAuthConfigProvider common.ConfigurationProvider, logger *logr.Logger) (*core.VirtualNetworkClient, error) { | ||
| vcnClient, err := core.NewVirtualNetworkClientWithConfigurationProvider(ociAuthConfigProvider) | ||
| if err != nil { | ||
| logger.Error(err, "unable to create OCI VCN Client") | ||
| return nil, err | ||
| } | ||
|
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| return &vcnClient, nil | ||
| } | ||
|
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| func createLbClient(ociAuthConfigProvider common.ConfigurationProvider, logger *logr.Logger) (*networkloadbalancer.NetworkLoadBalancerClient, error) { | ||
| lbClient, err := networkloadbalancer.NewNetworkLoadBalancerClientWithConfigurationProvider(ociAuthConfigProvider) | ||
| if err != nil { | ||
| logger.Error(err, "unable to create OCI LB Client") | ||
| return nil, err | ||
| } | ||
|
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| return &lbClient, nil | ||
| } | ||
|
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| func createIdentityClient(ociAuthConfigProvider common.ConfigurationProvider, logger *logr.Logger) (*identity.IdentityClient, error) { | ||
| identityClient, err := identity.NewIdentityClientWithConfigurationProvider(ociAuthConfigProvider) | ||
| if err != nil { | ||
| logger.Error(err, "unable to create OCI Identity Client") | ||
| return nil, err | ||
| } | ||
|
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| return &identityClient, nil | ||
| } | ||
|
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| func createComputeClient(ociAuthConfigProvider common.ConfigurationProvider, logger *logr.Logger) (*core.ComputeClient, error) { | ||
| computeClient, err := core.NewComputeClientWithConfigurationProvider(ociAuthConfigProvider) | ||
| if err != nil { | ||
| logger.Error(err, "unable to create OCI Compute Client") | ||
| return nil, err | ||
| } | ||
|
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| return &computeClient, nil | ||
| } |
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