622 lines
18 KiB
Go
622 lines
18 KiB
Go
package plugin6
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import (
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"context"
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"errors"
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"sync"
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"github.com/zclconf/go-cty/cty"
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plugin "github.com/hashicorp/go-plugin"
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"github.com/hashicorp/terraform/internal/logging"
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"github.com/hashicorp/terraform/internal/plugin6/convert"
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"github.com/hashicorp/terraform/internal/providers"
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proto6 "github.com/hashicorp/terraform/internal/tfplugin6"
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ctyjson "github.com/zclconf/go-cty/cty/json"
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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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var logger = logging.HCLogger()
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// GRPCProviderPlugin implements plugin.GRPCPlugin for the go-plugin package.
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type GRPCProviderPlugin struct {
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plugin.Plugin
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GRPCProvider func() proto6.ProviderServer
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}
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func (p *GRPCProviderPlugin) GRPCClient(ctx context.Context, broker *plugin.GRPCBroker, c *grpc.ClientConn) (interface{}, error) {
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return &GRPCProvider{
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client: proto6.NewProviderClient(c),
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ctx: ctx,
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}, nil
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}
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func (p *GRPCProviderPlugin) GRPCServer(broker *plugin.GRPCBroker, s *grpc.Server) error {
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proto6.RegisterProviderServer(s, p.GRPCProvider())
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return nil
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}
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// GRPCProvider handles the client, or core side of the plugin rpc connection.
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// The GRPCProvider methods are mostly a translation layer between the
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// terraform providers types and the grpc proto types, directly converting
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// between the two.
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type GRPCProvider 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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// TestServer contains a grpc.Server to close when the GRPCProvider is being
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// used in an end to end test of a provider.
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TestServer *grpc.Server
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// Proto client use to make the grpc service calls.
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client proto6.ProviderClient
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// this context is created by the plugin package, and is canceled when the
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// plugin process ends.
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ctx context.Context
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// schema stores the schema for this provider. This is used to properly
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// serialize the state for requests.
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mu sync.Mutex
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schemas providers.GetProviderSchemaResponse
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}
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func New(client proto6.ProviderClient, ctx context.Context) GRPCProvider {
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return GRPCProvider{
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client: client,
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ctx: ctx,
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}
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}
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// getSchema is used internally to get the saved provider schema. The schema
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// should have already been fetched from the provider, but we have to
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// synchronize access to avoid being called concurrently with GetProviderSchema.
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func (p *GRPCProvider) getSchema() providers.GetProviderSchemaResponse {
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p.mu.Lock()
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// unlock inline in case GetProviderSchema needs to be called
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if p.schemas.Provider.Block != nil {
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p.mu.Unlock()
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return p.schemas
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}
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p.mu.Unlock()
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// the schema should have been fetched already, but give it another shot
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// just in case things are being called out of order. This may happen for
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// tests.
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schemas := p.GetProviderSchema()
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if schemas.Diagnostics.HasErrors() {
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panic(schemas.Diagnostics.Err())
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}
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return schemas
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}
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// getResourceSchema is a helper to extract the schema for a resource, and
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// panics if the schema is not available.
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func (p *GRPCProvider) getResourceSchema(name string) providers.Schema {
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schema := p.getSchema()
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resSchema, ok := schema.ResourceTypes[name]
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if !ok {
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panic("unknown resource type " + name)
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}
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return resSchema
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}
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// gettDatasourceSchema is a helper to extract the schema for a datasource, and
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// panics if that schema is not available.
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func (p *GRPCProvider) getDatasourceSchema(name string) providers.Schema {
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schema := p.getSchema()
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dataSchema, ok := schema.DataSources[name]
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if !ok {
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panic("unknown data source " + name)
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}
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return dataSchema
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}
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// getProviderMetaSchema is a helper to extract the schema for the meta info
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// defined for a provider,
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func (p *GRPCProvider) getProviderMetaSchema() providers.Schema {
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schema := p.getSchema()
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return schema.ProviderMeta
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}
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func (p *GRPCProvider) GetProviderSchema() (resp providers.GetProviderSchemaResponse) {
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logger.Trace("GRPCProvider.v6: GetProviderSchema")
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p.mu.Lock()
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defer p.mu.Unlock()
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if p.schemas.Provider.Block != nil {
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return p.schemas
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}
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resp.ResourceTypes = make(map[string]providers.Schema)
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resp.DataSources = make(map[string]providers.Schema)
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// Some providers may generate quite large schemas, and the internal default
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// grpc response size limit is 4MB. 64MB should cover most any use case, and
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// if we get providers nearing that we may want to consider a finer-grained
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// API to fetch individual resource schemas.
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// Note: this option is marked as EXPERIMENTAL in the grpc API.
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const maxRecvSize = 64 << 20
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protoResp, err := p.client.GetProviderSchema(p.ctx, new(proto6.GetProviderSchema_Request), grpc.MaxRecvMsgSizeCallOption{MaxRecvMsgSize: maxRecvSize})
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if err != nil {
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resp.Diagnostics = resp.Diagnostics.Append(grpcErr(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.Provider == nil {
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resp.Diagnostics = resp.Diagnostics.Append(errors.New("missing provider schema"))
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return resp
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}
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resp.Provider = convert.ProtoToProviderSchema(protoResp.Provider)
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if protoResp.ProviderMeta == nil {
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logger.Debug("No provider meta schema returned")
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} else {
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resp.ProviderMeta = convert.ProtoToProviderSchema(protoResp.ProviderMeta)
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}
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for name, res := range protoResp.ResourceSchemas {
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resp.ResourceTypes[name] = convert.ProtoToProviderSchema(res)
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}
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for name, data := range protoResp.DataSourceSchemas {
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resp.DataSources[name] = convert.ProtoToProviderSchema(data)
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}
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p.schemas = resp
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return resp
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}
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func (p *GRPCProvider) ValidateProviderConfig(r providers.ValidateProviderConfigRequest) (resp providers.ValidateProviderConfigResponse) {
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logger.Trace("GRPCProvider.v6: ValidateProviderConfig")
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schema := p.getSchema()
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ty := schema.Provider.Block.ImpliedType()
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mp, err := msgpack.Marshal(r.Config, ty)
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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 := &proto6.ValidateProviderConfig_Request{
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Config: &proto6.DynamicValue{Msgpack: mp},
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}
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protoResp, err := p.client.ValidateProviderConfig(p.ctx, protoReq)
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if err != nil {
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resp.Diagnostics = resp.Diagnostics.Append(grpcErr(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 *GRPCProvider) ValidateResourceConfig(r providers.ValidateResourceConfigRequest) (resp providers.ValidateResourceConfigResponse) {
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logger.Trace("GRPCProvider.v6: ValidateResourceConfig")
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resourceSchema := p.getResourceSchema(r.TypeName)
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mp, err := msgpack.Marshal(r.Config, resourceSchema.Block.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 := &proto6.ValidateResourceConfig_Request{
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TypeName: r.TypeName,
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Config: &proto6.DynamicValue{Msgpack: mp},
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}
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protoResp, err := p.client.ValidateResourceConfig(p.ctx, protoReq)
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if err != nil {
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resp.Diagnostics = resp.Diagnostics.Append(grpcErr(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 *GRPCProvider) ValidateDataResourceConfig(r providers.ValidateDataResourceConfigRequest) (resp providers.ValidateDataResourceConfigResponse) {
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logger.Trace("GRPCProvider.v6: ValidateDataResourceConfig")
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dataSchema := p.getDatasourceSchema(r.TypeName)
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mp, err := msgpack.Marshal(r.Config, dataSchema.Block.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 := &proto6.ValidateDataResourceConfig_Request{
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TypeName: r.TypeName,
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Config: &proto6.DynamicValue{Msgpack: mp},
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}
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protoResp, err := p.client.ValidateDataResourceConfig(p.ctx, protoReq)
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if err != nil {
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resp.Diagnostics = resp.Diagnostics.Append(grpcErr(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 *GRPCProvider) UpgradeResourceState(r providers.UpgradeResourceStateRequest) (resp providers.UpgradeResourceStateResponse) {
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logger.Trace("GRPCProvider.v6: UpgradeResourceState")
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resSchema := p.getResourceSchema(r.TypeName)
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protoReq := &proto6.UpgradeResourceState_Request{
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TypeName: r.TypeName,
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Version: int64(r.Version),
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RawState: &proto6.RawState{
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Json: r.RawStateJSON,
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Flatmap: r.RawStateFlatmap,
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},
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}
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protoResp, err := p.client.UpgradeResourceState(p.ctx, protoReq)
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if err != nil {
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resp.Diagnostics = resp.Diagnostics.Append(grpcErr(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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ty := resSchema.Block.ImpliedType()
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resp.UpgradedState = cty.NullVal(ty)
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if protoResp.UpgradedState == nil {
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return resp
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}
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state, err := decodeDynamicValue(protoResp.UpgradedState, ty)
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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.UpgradedState = state
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return resp
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}
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func (p *GRPCProvider) ConfigureProvider(r providers.ConfigureProviderRequest) (resp providers.ConfigureProviderResponse) {
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logger.Trace("GRPCProvider.v6: ConfigureProvider")
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schema := p.getSchema()
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var mp []byte
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// we don't have anything to marshal if there's no config
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mp, err := msgpack.Marshal(r.Config, schema.Provider.Block.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 := &proto6.ConfigureProvider_Request{
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TerraformVersion: r.TerraformVersion,
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Config: &proto6.DynamicValue{
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Msgpack: mp,
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},
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}
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protoResp, err := p.client.ConfigureProvider(p.ctx, protoReq)
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if err != nil {
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resp.Diagnostics = resp.Diagnostics.Append(grpcErr(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 *GRPCProvider) Stop() error {
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logger.Trace("GRPCProvider.v6: Stop")
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resp, err := p.client.StopProvider(p.ctx, new(proto6.StopProvider_Request))
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if err != nil {
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return err
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}
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if resp.Error != "" {
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return errors.New(resp.Error)
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}
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return nil
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}
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func (p *GRPCProvider) ReadResource(r providers.ReadResourceRequest) (resp providers.ReadResourceResponse) {
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logger.Trace("GRPCProvider.v6: ReadResource")
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resSchema := p.getResourceSchema(r.TypeName)
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metaSchema := p.getProviderMetaSchema()
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mp, err := msgpack.Marshal(r.PriorState, resSchema.Block.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 := &proto6.ReadResource_Request{
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TypeName: r.TypeName,
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CurrentState: &proto6.DynamicValue{Msgpack: mp},
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Private: r.Private,
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}
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if metaSchema.Block != nil {
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metaMP, err := msgpack.Marshal(r.ProviderMeta, metaSchema.Block.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.ProviderMeta = &proto6.DynamicValue{Msgpack: metaMP}
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}
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protoResp, err := p.client.ReadResource(p.ctx, protoReq)
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if err != nil {
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resp.Diagnostics = resp.Diagnostics.Append(grpcErr(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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state, err := decodeDynamicValue(protoResp.NewState, resSchema.Block.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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resp.NewState = state
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resp.Private = protoResp.Private
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return resp
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}
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func (p *GRPCProvider) PlanResourceChange(r providers.PlanResourceChangeRequest) (resp providers.PlanResourceChangeResponse) {
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logger.Trace("GRPCProvider.v6: PlanResourceChange")
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resSchema := p.getResourceSchema(r.TypeName)
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metaSchema := p.getProviderMetaSchema()
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priorMP, err := msgpack.Marshal(r.PriorState, resSchema.Block.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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configMP, err := msgpack.Marshal(r.Config, resSchema.Block.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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propMP, err := msgpack.Marshal(r.ProposedNewState, resSchema.Block.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 := &proto6.PlanResourceChange_Request{
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TypeName: r.TypeName,
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PriorState: &proto6.DynamicValue{Msgpack: priorMP},
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Config: &proto6.DynamicValue{Msgpack: configMP},
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ProposedNewState: &proto6.DynamicValue{Msgpack: propMP},
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PriorPrivate: r.PriorPrivate,
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}
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if metaSchema.Block != nil {
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metaMP, err := msgpack.Marshal(r.ProviderMeta, metaSchema.Block.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.ProviderMeta = &proto6.DynamicValue{Msgpack: metaMP}
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}
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protoResp, err := p.client.PlanResourceChange(p.ctx, protoReq)
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if err != nil {
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resp.Diagnostics = resp.Diagnostics.Append(grpcErr(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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state, err := decodeDynamicValue(protoResp.PlannedState, resSchema.Block.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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resp.PlannedState = state
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for _, p := range protoResp.RequiresReplace {
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resp.RequiresReplace = append(resp.RequiresReplace, convert.AttributePathToPath(p))
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}
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resp.PlannedPrivate = protoResp.PlannedPrivate
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resp.LegacyTypeSystem = protoResp.LegacyTypeSystem
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return resp
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}
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func (p *GRPCProvider) ApplyResourceChange(r providers.ApplyResourceChangeRequest) (resp providers.ApplyResourceChangeResponse) {
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logger.Trace("GRPCProvider.v6: ApplyResourceChange")
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resSchema := p.getResourceSchema(r.TypeName)
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metaSchema := p.getProviderMetaSchema()
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priorMP, err := msgpack.Marshal(r.PriorState, resSchema.Block.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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plannedMP, err := msgpack.Marshal(r.PlannedState, resSchema.Block.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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configMP, err := msgpack.Marshal(r.Config, resSchema.Block.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 := &proto6.ApplyResourceChange_Request{
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TypeName: r.TypeName,
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PriorState: &proto6.DynamicValue{Msgpack: priorMP},
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PlannedState: &proto6.DynamicValue{Msgpack: plannedMP},
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Config: &proto6.DynamicValue{Msgpack: configMP},
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PlannedPrivate: r.PlannedPrivate,
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}
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if metaSchema.Block != nil {
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metaMP, err := msgpack.Marshal(r.ProviderMeta, metaSchema.Block.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.ProviderMeta = &proto6.DynamicValue{Msgpack: metaMP}
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}
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protoResp, err := p.client.ApplyResourceChange(p.ctx, protoReq)
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if err != nil {
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resp.Diagnostics = resp.Diagnostics.Append(grpcErr(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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resp.Private = protoResp.Private
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state, err := decodeDynamicValue(protoResp.NewState, resSchema.Block.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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resp.NewState = state
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resp.LegacyTypeSystem = protoResp.LegacyTypeSystem
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return resp
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}
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func (p *GRPCProvider) ImportResourceState(r providers.ImportResourceStateRequest) (resp providers.ImportResourceStateResponse) {
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logger.Trace("GRPCProvider.v6: ImportResourceState")
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protoReq := &proto6.ImportResourceState_Request{
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TypeName: r.TypeName,
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Id: r.ID,
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}
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protoResp, err := p.client.ImportResourceState(p.ctx, protoReq)
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if err != nil {
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resp.Diagnostics = resp.Diagnostics.Append(grpcErr(err))
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return resp
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}
|
|
resp.Diagnostics = resp.Diagnostics.Append(convert.ProtoToDiagnostics(protoResp.Diagnostics))
|
|
|
|
for _, imported := range protoResp.ImportedResources {
|
|
resource := providers.ImportedResource{
|
|
TypeName: imported.TypeName,
|
|
Private: imported.Private,
|
|
}
|
|
|
|
resSchema := p.getResourceSchema(resource.TypeName)
|
|
state, err := decodeDynamicValue(imported.State, resSchema.Block.ImpliedType())
|
|
if err != nil {
|
|
resp.Diagnostics = resp.Diagnostics.Append(err)
|
|
return resp
|
|
}
|
|
resource.State = state
|
|
resp.ImportedResources = append(resp.ImportedResources, resource)
|
|
}
|
|
|
|
return resp
|
|
}
|
|
|
|
func (p *GRPCProvider) ReadDataSource(r providers.ReadDataSourceRequest) (resp providers.ReadDataSourceResponse) {
|
|
logger.Trace("GRPCProvider.v6: ReadDataSource")
|
|
|
|
dataSchema := p.getDatasourceSchema(r.TypeName)
|
|
metaSchema := p.getProviderMetaSchema()
|
|
|
|
config, err := msgpack.Marshal(r.Config, dataSchema.Block.ImpliedType())
|
|
if err != nil {
|
|
resp.Diagnostics = resp.Diagnostics.Append(err)
|
|
return resp
|
|
}
|
|
|
|
protoReq := &proto6.ReadDataSource_Request{
|
|
TypeName: r.TypeName,
|
|
Config: &proto6.DynamicValue{
|
|
Msgpack: config,
|
|
},
|
|
}
|
|
|
|
if metaSchema.Block != nil {
|
|
metaMP, err := msgpack.Marshal(r.ProviderMeta, metaSchema.Block.ImpliedType())
|
|
if err != nil {
|
|
resp.Diagnostics = resp.Diagnostics.Append(err)
|
|
return resp
|
|
}
|
|
protoReq.ProviderMeta = &proto6.DynamicValue{Msgpack: metaMP}
|
|
}
|
|
|
|
protoResp, err := p.client.ReadDataSource(p.ctx, protoReq)
|
|
if err != nil {
|
|
resp.Diagnostics = resp.Diagnostics.Append(grpcErr(err))
|
|
return resp
|
|
}
|
|
resp.Diagnostics = resp.Diagnostics.Append(convert.ProtoToDiagnostics(protoResp.Diagnostics))
|
|
|
|
state, err := decodeDynamicValue(protoResp.State, dataSchema.Block.ImpliedType())
|
|
if err != nil {
|
|
resp.Diagnostics = resp.Diagnostics.Append(err)
|
|
return resp
|
|
}
|
|
resp.State = state
|
|
|
|
return resp
|
|
}
|
|
|
|
// closing the grpc connection is final, and terraform will call it at the end of every phase.
|
|
func (p *GRPCProvider) Close() error {
|
|
logger.Trace("GRPCProvider.v6: Close")
|
|
|
|
// Make sure to stop the server if we're not running within go-plugin.
|
|
if p.TestServer != nil {
|
|
p.TestServer.Stop()
|
|
}
|
|
|
|
// Check this since it's not automatically inserted during plugin creation.
|
|
// It's currently only inserted by the command package, because that is
|
|
// where the factory is built and is the only point with access to the
|
|
// plugin.Client.
|
|
if p.PluginClient == nil {
|
|
logger.Debug("provider has no plugin.Client")
|
|
return nil
|
|
}
|
|
|
|
p.PluginClient.Kill()
|
|
return nil
|
|
}
|
|
|
|
// Decode a DynamicValue from either the JSON or MsgPack encoding.
|
|
func decodeDynamicValue(v *proto6.DynamicValue, ty cty.Type) (cty.Value, error) {
|
|
// always return a valid value
|
|
var err error
|
|
res := cty.NullVal(ty)
|
|
if v == nil {
|
|
return res, nil
|
|
}
|
|
|
|
switch {
|
|
case len(v.Msgpack) > 0:
|
|
res, err = msgpack.Unmarshal(v.Msgpack, ty)
|
|
case len(v.Json) > 0:
|
|
res, err = ctyjson.Unmarshal(v.Json, ty)
|
|
}
|
|
return res, err
|
|
}
|