Merge pull request #103 from rakshita-kaulgud/main

Issue #93 : Changes to check for docker and docker compose status on …

cmd/info.go

@@ -19,6 +19,7 @@ package cmd
 import (
 	"fmt"
 
+	"github.com/hyperledger/firefly-cli/internal/docker"
 	"github.com/hyperledger/firefly-cli/internal/stacks"
 	"github.com/spf13/cobra"
 )
@@ -29,6 +30,9 @@ var infoCmd = &cobra.Command{
 	Long: `Get info about a stack such as each container name
 	and image version.`,
 	RunE: func(cmd *cobra.Command, args []string) error {
+		if err := docker.CheckDockerConfig(); err != nil {
+			return err
+		}
 		stackManager := stacks.NewStackManager(logger)
 		if len(args) == 0 {
 			return fmt.Errorf("no stack specified")

cmd/logs.go

@@ -36,6 +36,10 @@ var logsCmd = &cobra.Command{
 The most recent logs can be viewed, or you can follow the
 output with the -f flag.`,
 	RunE: func(cmd *cobra.Command, args []string) error {
+		if err := docker.CheckDockerConfig(); err != nil {
+			return err
+		}
+
 		if len(args) == 0 {
 			return fmt.Errorf("no stack specified")
 		}

cmd/remove.go

@@ -22,6 +22,7 @@ import (
 	"path/filepath"
 
 	"github.com/hyperledger/firefly-cli/internal/constants"
+	"github.com/hyperledger/firefly-cli/internal/docker"
 	"github.com/hyperledger/firefly-cli/internal/stacks"
 	"github.com/spf13/cobra"
 )
@@ -35,6 +36,9 @@ var removeCmd = &cobra.Command{
 This command will completely delete a stack, including all of its data
 and configuration.`,
 	RunE: func(cmd *cobra.Command, args []string) error {
+		if err := docker.CheckDockerConfig(); err != nil {
+			return err
+		}
 		stackManager := stacks.NewStackManager(logger)
 		if len(args) == 0 {
 			return fmt.Errorf("no stack specified")

cmd/reset.go

@@ -19,6 +19,7 @@ package cmd
 import (
 	"fmt"
 
+	"github.com/hyperledger/firefly-cli/internal/docker"
 	"github.com/hyperledger/firefly-cli/internal/stacks"
 	"github.com/spf13/cobra"
 )
@@ -34,6 +35,11 @@ but don't want to actually recreate the resources in the stack itself.
 Note: this will also stop the stack if it is running.
 `,
 	RunE: func(cmd *cobra.Command, args []string) error {
+
+		if err := docker.CheckDockerConfig(); err != nil {
+			return err
+		}
+
 		stackManager := stacks.NewStackManager(logger)
 		if len(args) == 0 {
 			return fmt.Errorf("no stack specified")

cmd/start.go

@@ -22,6 +22,7 @@ import (
 	"time"
 
 	"github.com/briandowns/spinner"
+	"github.com/hyperledger/firefly-cli/internal/docker"
 	"github.com/hyperledger/firefly-cli/internal/log"
 	"github.com/hyperledger/firefly-cli/internal/stacks"
 	"github.com/spf13/cobra"
@@ -46,6 +47,10 @@ This command will start a stack and run it in the background.
 			}
 		}
 
+		if err := docker.CheckDockerConfig(); err != nil {
+			return err
+		}
+
 		stackManager := stacks.NewStackManager(logger)
 		if len(args) == 0 {
 			return errors.New("no stack specified")
@@ -82,6 +87,5 @@ This command will start a stack and run it in the background.
 
 func init() {
 	startCmd.Flags().BoolVarP(&startOptions.NoRollback, "no-rollback", "b", false, "Do not automatically rollback changes if first time setup fails")
-
 	rootCmd.AddCommand(startCmd)
 }

cmd/stop.go

@@ -19,6 +19,7 @@ package cmd
 import (
 	"fmt"
 
+	"github.com/hyperledger/firefly-cli/internal/docker"
 	"github.com/hyperledger/firefly-cli/internal/stacks"
 	"github.com/spf13/cobra"
 )
@@ -29,6 +30,9 @@ var stopCmd = &cobra.Command{
 	Short: "Stop a stack",
 	Long:  `Stop a stack`,
 	RunE: func(cmd *cobra.Command, args []string) error {
+		if err := docker.CheckDockerConfig(); err != nil {
+			return err
+		}
 		stackManager := stacks.NewStackManager(logger)
 		if len(args) == 0 {
 			return fmt.Errorf("no stack specified")

internal/docker/docker_checks.go

@@ -0,0 +1,31 @@
+package docker
+
+import (
+	"fmt"
+	"os/exec"
+)
+
+// CheckDockerConfig is a function to check docker and docker-compose configuration on the host
+func CheckDockerConfig() error {
+
+	dockerCmd := exec.Command("docker", "-v")
+	_, err := dockerCmd.Output()
+	if err != nil {
+		return fmt.Errorf("An error occurred while running docker. Is docker installed on your computer?")
+	}
+
+	dockerComposeCmd := exec.Command("docker-compose", "-v")
+	_, err = dockerComposeCmd.Output()
+
+	if err != nil {
+		return fmt.Errorf("An error occurred while running docker-compose. Is docker-compose installed on your computer?")
+	}
+
+	dockerDeamonCheck := exec.Command("docker", "ps")
+	_, err = dockerDeamonCheck.Output()
+	if err != nil {
+		return fmt.Errorf("An error occurred while running docker. Is docker running on your computer?")
+	}
+
+	return nil
+}