add client capabilites across the board

Author: DanielMSchmidt

docs/plugin-protocol/tfplugin5.proto

@@ -970,6 +970,8 @@ message InvokeAction {
         repeated LinkedResource linked_resources = 2;
         // response from the plan
         DynamicValue config = 3;
+        // metadata
+        ClientCapabilities client_capabilities = 4;
     }
 
     message Event {

docs/plugin-protocol/tfplugin6.proto

@@ -1008,6 +1008,8 @@ message InvokeAction {
         repeated LinkedResource linked_resources = 2;
         // response from the plan
         DynamicValue config = 3;
+        // metadata
+        ClientCapabilities client_capabilities = 4;
     }
 
     message Event {

internal/grpcwrap/provider.go

@@ -919,6 +919,10 @@ func (p *provider) PlanAction(_ context.Context, req *tfplugin5.PlanAction_Reque
 		ActionType:         req.ActionType,
 		ProposedActionData: configVal,
 		LinkedResources:    inputLinkedResources,
+		ClientCapabilities: providers.ClientCapabilities{
+			DeferralAllowed:            true,
+			WriteOnlyAttributesAllowed: true,
+		},
 	})
 
 	resp.Diagnostics = convert.AppendProtoDiag(resp.Diagnostics, planResp.Diagnostics)
@@ -1015,6 +1019,10 @@ func (p *provider) InvokeAction(req *tfplugin5.InvokeAction_Request, server tfpl
 		ActionType:        req.ActionType,
 		PlannedActionData: configVal,
 		LinkedResources:   linkedResourceData,
+		ClientCapabilities: providers.ClientCapabilities{
+			DeferralAllowed:            true,
+			WriteOnlyAttributesAllowed: true,
+		},
 	})
 
 	if invokeResp.Diagnostics.HasErrors() {

internal/grpcwrap/provider6.go

@@ -990,6 +990,10 @@ func (p *provider6) PlanAction(_ context.Context, req *tfplugin6.PlanAction_Requ
 		ActionType:         req.ActionType,
 		ProposedActionData: configVal,
 		LinkedResources:    inputLinkedResources,
+		ClientCapabilities: providers.ClientCapabilities{
+			DeferralAllowed:            true,
+			WriteOnlyAttributesAllowed: true,
+		},
 	})
 
 	resp.Diagnostics = convert.AppendProtoDiag(resp.Diagnostics, planResp.Diagnostics)
@@ -1086,6 +1090,10 @@ func (p *provider6) InvokeAction(req *tfplugin6.InvokeAction_Request, server tfp
 		ActionType:        req.ActionType,
 		PlannedActionData: configVal,
 		LinkedResources:   linkedResourceData,
+		ClientCapabilities: providers.ClientCapabilities{
+			DeferralAllowed:            true,
+			WriteOnlyAttributesAllowed: true,
+		},
 	})
 
 	if invokeResp.Diagnostics.HasErrors() {

internal/plugin/grpc_provider.go

@@ -1501,9 +1501,10 @@ func (p *GRPCProvider) InvokeAction(r providers.InvokeActionRequest) (resp provi
 	}
 
 	protoReq := &proto.InvokeAction_Request{
-		ActionType:      r.ActionType,
-		Config:          &proto.DynamicValue{Msgpack: configMP},
-		LinkedResources: linkedResources,
+		ActionType:         r.ActionType,
+		Config:             &proto.DynamicValue{Msgpack: configMP},
+		LinkedResources:    linkedResources,
+		ClientCapabilities: clientCapabilitiesToProto(r.ClientCapabilities),
 	}
 
 	protoClient, err := p.client.InvokeAction(p.ctx, protoReq)

internal/plugin6/grpc_provider.go

@@ -1518,9 +1518,10 @@ func (p *GRPCProvider) InvokeAction(r providers.InvokeActionRequest) (resp provi
 	}
 
 	protoReq := &proto6.InvokeAction_Request{
-		ActionType:      r.ActionType,
-		Config:          &proto6.DynamicValue{Msgpack: configMP},
-		LinkedResources: linkedResources,
+		ActionType:         r.ActionType,
+		Config:             &proto6.DynamicValue{Msgpack: configMP},
+		LinkedResources:    linkedResources,
+		ClientCapabilities: clientCapabilitiesToProto(r.ClientCapabilities),
 	}
 
 	protoClient, err := p.client.InvokeAction(p.ctx, protoReq)

internal/providers/provider.go

@@ -915,9 +915,10 @@ type PlanActionResponse struct {
 }
 
 type InvokeActionRequest struct {
-	ActionType        string
-	LinkedResources   []LinkedResourceInvokeData
-	PlannedActionData cty.Value
+	ActionType         string
+	LinkedResources    []LinkedResourceInvokeData
+	PlannedActionData  cty.Value
+	ClientCapabilities ClientCapabilities
 }
 
 type InvokeActionResponse struct {

internal/terraform/node_action_apply.go

@@ -140,8 +140,9 @@ func invokeActions(ctx EvalContext, actionInvocations []*plans.ActionInvocationI
 			return h.StartAction(hookIdentity)
 		})
 		resp := provider.InvokeAction(providers.InvokeActionRequest{
-			ActionType:        orderedActionInvocations[i].Addr.Action.Action.Type,
-			PlannedActionData: unmarkedConfigValue,
+			ActionType:         orderedActionInvocations[i].Addr.Action.Action.Type,
+			PlannedActionData:  unmarkedConfigValue,
+			ClientCapabilities: ctx.ClientCapabilities(),
 		})
 
 		diags = diags.Append(resp.Diagnostics)