mirror of
https://github.com/letic/terraform-provider-google.git
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![Riley Karson](/assets/img/avatar_default.png)
```bash GO111MODULE=on go get github.com/hashicorp/terraform@pluginsdk-v0.12-early7 GO111MODULE=on go mod vendor GO111MODULE=on go mod tidy ```
179 lines
4.7 KiB
Go
179 lines
4.7 KiB
Go
package plugin
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import (
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"context"
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"errors"
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"io"
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"log"
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"sync"
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plugin "github.com/hashicorp/go-plugin"
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"github.com/hashicorp/terraform/configs/configschema"
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proto "github.com/hashicorp/terraform/internal/tfplugin5"
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"github.com/hashicorp/terraform/plugin/convert"
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"github.com/hashicorp/terraform/provisioners"
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"github.com/zclconf/go-cty/cty"
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"github.com/zclconf/go-cty/cty/msgpack"
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"google.golang.org/grpc"
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)
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// GRPCProvisionerPlugin is the plugin.GRPCPlugin implementation.
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type GRPCProvisionerPlugin struct {
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plugin.Plugin
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GRPCProvisioner func() proto.ProvisionerServer
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}
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func (p *GRPCProvisionerPlugin) GRPCClient(ctx context.Context, broker *plugin.GRPCBroker, c *grpc.ClientConn) (interface{}, error) {
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return &GRPCProvisioner{
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client: proto.NewProvisionerClient(c),
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ctx: ctx,
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}, nil
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}
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func (p *GRPCProvisionerPlugin) GRPCServer(broker *plugin.GRPCBroker, s *grpc.Server) error {
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proto.RegisterProvisionerServer(s, p.GRPCProvisioner())
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return nil
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}
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// provisioners.Interface grpc implementation
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type GRPCProvisioner struct {
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// PluginClient provides a reference to the plugin.Client which controls the plugin process.
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// This allows the GRPCProvider a way to shutdown the plugin process.
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PluginClient *plugin.Client
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client proto.ProvisionerClient
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ctx context.Context
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// Cache the schema since we need it for serialization in each method call.
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mu sync.Mutex
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schema *configschema.Block
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}
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func (p *GRPCProvisioner) GetSchema() (resp provisioners.GetSchemaResponse) {
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p.mu.Lock()
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defer p.mu.Unlock()
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if p.schema != nil {
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return provisioners.GetSchemaResponse{
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Provisioner: p.schema,
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}
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}
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protoResp, err := p.client.GetSchema(p.ctx, new(proto.GetProvisionerSchema_Request))
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if err != nil {
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resp.Diagnostics = resp.Diagnostics.Append(err)
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return resp
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}
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resp.Diagnostics = resp.Diagnostics.Append(convert.ProtoToDiagnostics(protoResp.Diagnostics))
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if protoResp.Provisioner == nil {
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resp.Diagnostics = resp.Diagnostics.Append(errors.New("missing provisioner schema"))
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return resp
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}
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resp.Provisioner = convert.ProtoToConfigSchema(protoResp.Provisioner.Block)
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p.schema = resp.Provisioner
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return resp
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}
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func (p *GRPCProvisioner) ValidateProvisionerConfig(r provisioners.ValidateProvisionerConfigRequest) (resp provisioners.ValidateProvisionerConfigResponse) {
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schema := p.GetSchema()
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if schema.Diagnostics.HasErrors() {
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resp.Diagnostics = resp.Diagnostics.Append(schema.Diagnostics)
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return resp
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}
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mp, err := msgpack.Marshal(r.Config, schema.Provisioner.ImpliedType())
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if err != nil {
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resp.Diagnostics = resp.Diagnostics.Append(err)
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return resp
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}
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protoReq := &proto.ValidateProvisionerConfig_Request{
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Config: &proto.DynamicValue{Msgpack: mp},
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}
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protoResp, err := p.client.ValidateProvisionerConfig(p.ctx, protoReq)
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if err != nil {
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resp.Diagnostics = resp.Diagnostics.Append(err)
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return resp
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}
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resp.Diagnostics = resp.Diagnostics.Append(convert.ProtoToDiagnostics(protoResp.Diagnostics))
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return resp
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}
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func (p *GRPCProvisioner) ProvisionResource(r provisioners.ProvisionResourceRequest) (resp provisioners.ProvisionResourceResponse) {
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schema := p.GetSchema()
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if schema.Diagnostics.HasErrors() {
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resp.Diagnostics = resp.Diagnostics.Append(schema.Diagnostics)
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return resp
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}
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mp, err := msgpack.Marshal(r.Config, schema.Provisioner.ImpliedType())
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if err != nil {
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resp.Diagnostics = resp.Diagnostics.Append(err)
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return resp
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}
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// connection is always assumed to be a simple string map
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connMP, err := msgpack.Marshal(r.Connection, cty.Map(cty.String))
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if err != nil {
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resp.Diagnostics = resp.Diagnostics.Append(err)
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return resp
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}
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protoReq := &proto.ProvisionResource_Request{
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Config: &proto.DynamicValue{Msgpack: mp},
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Connection: &proto.DynamicValue{Msgpack: connMP},
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}
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outputClient, err := p.client.ProvisionResource(p.ctx, protoReq)
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if err != nil {
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resp.Diagnostics = resp.Diagnostics.Append(err)
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return resp
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}
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for {
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rcv, err := outputClient.Recv()
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if rcv != nil {
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r.UIOutput.Output(rcv.Output)
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}
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if err != nil {
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if err != io.EOF {
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resp.Diagnostics = resp.Diagnostics.Append(err)
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}
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break
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}
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if len(rcv.Diagnostics) > 0 {
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resp.Diagnostics = resp.Diagnostics.Append(convert.ProtoToDiagnostics(rcv.Diagnostics))
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break
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}
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}
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return resp
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}
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func (p *GRPCProvisioner) Stop() error {
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protoResp, err := p.client.Stop(p.ctx, &proto.Stop_Request{})
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if err != nil {
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return err
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}
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if protoResp.Error != "" {
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return errors.New(protoResp.Error)
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}
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return nil
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}
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func (p *GRPCProvisioner) Close() error {
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// check this since it's not automatically inserted during plugin creation
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if p.PluginClient == nil {
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log.Println("[DEBUG] provider has no plugin.Client")
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return nil
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}
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p.PluginClient.Kill()
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return nil
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}
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