Write command output to Meta.Streams, more plugin err handling

internal/cloudplugin/cloudplugin1/grpc_client.go

@@ -44,17 +44,23 @@ func (c GRPCCloudClient) Execute(args []string, stdout, stderr io.Writer) int {
 		}
 
 		if bytes := response.GetStdout(); len(bytes) > 0 {
-			_, err := fmt.Fprint(stdout, string(bytes))
+			written, err := fmt.Fprint(stdout, string(bytes))
 			if err != nil {
 				log.Printf("[ERROR] Failed to write cloudplugin output to stdout: %s", err)
 				return 1
 			}
+			if written != len(bytes) {
+				log.Printf("[ERROR] Wrote %d bytes to stdout but expected to write %d", written, len(bytes))
+			}
 		} else if bytes := response.GetStderr(); len(bytes) > 0 {
-			fmt.Fprint(stderr, string(bytes))
+			written, err := fmt.Fprint(stderr, string(bytes))
 			if err != nil {
 				log.Printf("[ERROR] Failed to write cloudplugin output to stderr: %s", err)
 				return 1
 			}
+			if written != len(bytes) {
+				log.Printf("[ERROR] Wrote %d bytes to stdout but expected to write %d", written, len(bytes))
+			}
 		} else {
 			exitCode := response.GetExitCode()
 			log.Printf("[TRACE] received exit code: %d", exitCode)

internal/command/cli_ui.go

@@ -10,7 +10,7 @@ import (
 	"github.com/mitchellh/colorstring"
 )
 
-// ColoredUi is a Ui implementation that colors its output according
+// ColorizeUi is a Ui implementation that colors its output according
 // to the given color schemes for the given type of output.
 type ColorizeUi struct {
 	Colorize    *colorstring.Colorize

internal/command/cloud.go

@@ -11,7 +11,6 @@ import (
 	"os/exec"
 	"path"
 	"runtime"
-	"strings"
 
 	"github.com/hashicorp/go-plugin"
 	svchost "github.com/hashicorp/terraform-svchost"
@@ -21,7 +20,6 @@ import (
 	"github.com/hashicorp/terraform/internal/cloudplugin/cloudplugin1"
 	"github.com/hashicorp/terraform/internal/logging"
 	"github.com/hashicorp/terraform/internal/tfdiags"
-	"github.com/mitchellh/cli"
 )
 
 // CloudCommand is a Command implementation that interacts with Terraform
@@ -225,30 +223,10 @@ func (c *CloudCommand) initPackagesCache() (string, error) {
 	return packagesPath, nil
 }
 
-type proxyOutput struct {
-	io.Writer
-	upstream cli.Ui
-}
-
-func (p proxyOutput) Write(data []byte) (int, error) {
-	p.upstream.Output(strings.TrimSuffix(string(data), "\n"))
-	return len(data), nil
-}
-
-type proxyError struct {
-	io.Writer
-	upstream cli.Ui
-}
-
-func (p proxyError) Write(data []byte) (int, error) {
-	p.upstream.Error(strings.TrimSuffix(string(data), "\n"))
-	return len(data), nil
-}
-
 // Run runs the cloud command with the given arguments.
 func (c *CloudCommand) Run(args []string) int {
 	args = c.Meta.process(args)
-	return c.realRun(args, proxyOutput{upstream: c.Meta.Ui}, proxyError{upstream: c.Meta.Ui})
+	return c.realRun(args, c.Meta.Streams.Stdout.File, c.Meta.Streams.Stderr.File)
 }
 
 // Help returns help text for the cloud command.