provider_init.go

package handler

import (
	"fmt"

	"github.com/awlsring/texit/internal/app/ui/adapters/primary/cli/flag"
	"github.com/awlsring/texit/internal/pkg/domain/provider"
	"github.com/urfave/cli/v2"
)

func (h *Handler) ProviderInit(c *cli.Context) error {
	t, err := provider.TypeFromString(c.String(flag.ProviderType))
	if err != nil {
		return err
	}

	switch t {
	case provider.TypeAwsEcs:
		return h.initAwsEcsProvider(c)
	case provider.TypeAwsEc2:
		return h.initAwsEc2Provider(c)
	case provider.TypeLinode:
		return h.initLinodeProvider(c)
	default:
		return fmt.Errorf("unknown provider type: %s", t.String())
	}
}

func (h *Handler) initLinodeProvider(ctx *cli.Context) error {
	fmt.Println("To use a Linode provider, you must have a Linode account and an API key.")
	fmt.Println("To create an API key, go to the Linode Cloud Manager and navigate to the 'My Profile' section.")
	fmt.Println("Then, click on 'API Tokens' and create a new token. This token needs Read/Write scopes for Linodes and StackScripts.")
	fmt.Println("Finally, configure the provider with the API key in the texit configuration file")
	fmt.Print(`
providers:
  ...
  - type: linode
    apiKey: <YOUR API KEY>
	name: <SOME UNIQUE NAME TO CALL THIS PROVIDER>
`)
	return nil
}

func (h *Handler) initAwsEc2Provider(ctx *cli.Context) error {
	fmt.Println("To use an AWS EC2 provider, you must have an AWS account and have the AWS CLI installed and configured.")
	fmt.Println("For more on this information, see: https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-quickstart.html")
	fmt.Println("")
	fmt.Println("Once you have the AWS CLI installed and configured, you can run the following commands to create the required resources:")
	fmt.Println("")
	fmt.Println("First, create an IAM user that the provider will use")
	fmt.Println("aws iam create-user --user-name texit-ec2-provider")
	fmt.Println("")
	fmt.Println("Then create a JSON file with a policy document with the following command.")
	fmt.Println("")
	fmt.Println(`echo '{
	"Version": "2012-10-17",
	"Statement": [
		{
			"Effect": "Allow",
			"Action": [
                "ec2:DescribeImages",
                "ec2:RunInstances",
                "ec2:StartInstances",
                "ec2:StopInstances",
                "ec2:TerminateInstances",
                "ec2:DescribeInstances",
				"ec2:CreateTags"
			],
			"Resource": "*"
		}
	]
}' > texit-ec2-provider-policy.json`)
	fmt.Println("")
	fmt.Println("Next, create the IAM policy from the JSON file. Note the ARN of the policy as it will be used next.")
	fmt.Println("aws iam create-policy --policy-name texit-ec2-provider-policy --policy-document file://texit-ec2-provider-policy.json")
	fmt.Println("")
	fmt.Println("Attach the policy to the user")
	fmt.Println("aws iam attach-user-policy --user-name texit-ec2-provider --policy-arn <policy-arn>")
	fmt.Println("")
	fmt.Println("Create an access key for the user")
	fmt.Println("aws iam create-access-key --user-name texit-ec2-provider")
	fmt.Println("")
	fmt.Println("Finally, configure the provider with the access key and secret key in the texit configuration file")
	fmt.Print(`
providers:
  ...
  - type: aws-ec2
    accessKey: <THE ACCESS KEY FOR THE USER>
    secretKey: <THE SECRET KEY FOR THE USER>
    name: <SOME UNIQUE NAME TO CALL THIS PROVIDER>
`)
	return nil
}

func (h *Handler) initAwsEcsProvider(ctx *cli.Context) error {
	fmt.Println("To use an AWS ECS provider, you must have an AWS account and have the AWS CLI installed and configured.")
	fmt.Println("For more on this information, see: https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-quickstart.html")
	fmt.Println("")
	fmt.Println("Once you have the AWS CLI installed and configured, you can run the following commands to create the required resources:")
	fmt.Println("")
	fmt.Println("First, create an IAM user that the provider will use")
	fmt.Println("aws iam create-user --user-name texit-ecs-provider")
	fmt.Println("")
	fmt.Println("Then create a JSON file with a policy document with the following command.")
	fmt.Println("")
	fmt.Println(`echo '{
	"Version": "2012-10-17",
	"Statement": [
		{
			"Effect": "Allow",
			"Action": [
				"ec2:DescribeVpcs",
				"ec2:DescribeSubnets",
				"ec2:DescribeSecurityGroups",
				"ecs:CreateCluster",
				"ecs:DeleteCluster",
				"ecs:DescribeClusters",
				"ecs:ListClusters",
				"ecs:CreateService",
				"ecs:DeleteService",
				"ecs:DescribeServices",
				"ecs:ListServices",
				"ecs:UpdateService",
				"ecs:RegisterTaskDefinition",
				"ecs:DeregisterTaskDefinition",
				"ecs:DescribeTaskDefinition",
				"ecs:ListTaskDefinitions",
				"ecs:DeleteTaskDefinitions",
				"ecs:ListTasks",
				"ecs:DescribeTasks",
				"ecs:TagResource",
				"ssm:PutParameter",
				"ssm:GetParameter",
				"ssm:DeleteParameter",
				"ssm:AddTagsToResource",
				"iam:CreateRole",
				"iam:GetRole",
				"iam:AttachRolePolicy",
				"iam:DetachRolePolicy",
				"iam:DeleteRole",
				"iam:ListAttachedRolePolicies",
				"iam:ListRolePolicies",
				"iam:CreatePolicy",
				"iam:DeletePolicy",
				"iam:TagPolicy",
				"iam:UntagPolicy",
				"iam:TagRole",
				"iam:UntagRole"
			],
			"Resource": "*"
		},
		{
            "Action": "iam:PassRole",
            "Effect": "Allow",
            "Resource": [
                "*"
            ],
            "Condition": {
                "StringLike": {
                    "iam:PassedToService": "ecs-tasks.amazonaws.com"
                }
            }
        },
        {
            "Action": "iam:PassRole",
            "Effect": "Allow",
            "Resource": [
                "arn:aws:iam::*:role/ecsInstanceRole*"
            ],
            "Condition": {
                "StringLike": {
                    "iam:PassedToService": [
                        "ec2.amazonaws.com",
                        "ec2.amazonaws.com.cn"
                    ]
                }
            }
        },
        {
            "Action": "iam:PassRole",
            "Effect": "Allow",
            "Resource": [
                "arn:aws:iam::*:role/ecsAutoscaleRole*"
            ],
            "Condition": {
                "StringLike": {
                    "iam:PassedToService": [
                        "application-autoscaling.amazonaws.com",
                        "application-autoscaling.amazonaws.com.cn"
                    ]
                }
            }
        }
	]
}' > texit-ecs-provider-policy.json`)
	fmt.Println("")
	fmt.Println("Next, create the IAM policy from the JSON file. Note the ARN of the policy as it will be used next.")
	fmt.Println("aws iam create-policy --policy-name texit-ecs-provider-policy --policy-document file://texit-ecs-provider-policy.json")
	fmt.Println("")
	fmt.Println("Attach the policy to the user")
	fmt.Println("aws iam attach-user-policy --user-name texit-ecs-provider --policy-arn <policy-arn>")
	fmt.Println("")
	fmt.Println("Create an access key for the user")
	fmt.Println("aws iam create-access-key --user-name texit-ecs-provider")
	fmt.Println("")
	fmt.Println("Finally, configure the provider with the access key and secret key in the texit configuration file")
	fmt.Print(`
providers:
  ...
  - type: aws-ecs
    accessKey: <THE ACCESS KEY FOR THE USER>
    secretKey: <THE SECRET KEY FOR THE USER>
    name: <SOME UNIQUE NAME TO CALL THIS PROVIDER>
`)
	return nil
}