Golang ReadFile示例

示例#1

文件： client.go 项目： maximilien/go_service_broker

func (c *AWSClient) InjectKeyPair(instanceId string) (string, string, string, error) {
	instanceInput := &ec2.DescribeInstancesInput{
		InstanceIDs: []*string{
			aws.String(instanceId), // Required
		},
	}

	instanceOutput, err := c.EC2Client.DescribeInstances(instanceInput)
	if err != nil {
		return "", "", "", err
	}

	ip, _ := strconv.Unquote(awsutil.StringValue(instanceOutput.Reservations[0].Instances[0].PublicIPAddress))
	pemBytes, err := utils.ReadFile(path.Join(os.Getenv("HOME"), KEYPAIR_DIR_NAME, PIRVATE_KEY_FILE_NAME))
	if err != nil {
		return "", "", "", err
	}

	awsSShClient, err := utils.GetSshClient(LINUX_USER, pemBytes, ip)
	if err != nil {
		return "", "", "", err
	}

	command := `rm -f ./broker_id_rsa ./broker_id_rsa.pub
		ssh-keygen -q -t rsa -N ""  -f ./broker_id_rsa
		cat ./broker_id_rsa.pub >> .ssh/authorized_keys
		cat ./broker_id_rsa`

	privateKey, err := awsSShClient.ExecCommand(command)
	if err != nil {
		return "", "", "", err
	}

	return ip, LINUX_USER, privateKey, nil
}

示例#2

文件： config.go 项目： mwright-pivotal/go_service_broker

func LoadConfig(path string) (*Config, error) {
	bytes, err := utils.ReadFile(path)
	if err != nil {
		return &currentConfiguration, err
	}

	err = json.Unmarshal(bytes, &currentConfiguration)
	if err != nil {
		return &currentConfiguration, err
	}
	return &currentConfiguration, nil
}

示例#3

文件： client.go 项目： maximilien/go_service_broker

func (c *AWSClient) RevokeKeyPair(instanceId string, privateKey string) error {
	instanceInput := &ec2.DescribeInstancesInput{
		InstanceIDs: []*string{
			aws.String(instanceId),
		},
	}

	instanceOutput, err := c.EC2Client.DescribeInstances(instanceInput)
	if err != nil {
		return err
	}

	ip, _ := strconv.Unquote(awsutil.StringValue(instanceOutput.Reservations[0].Instances[0].PublicIPAddress))
	pemBytes, err := utils.ReadFile(path.Join(os.Getenv("HOME"), KEYPAIR_DIR_NAME, PIRVATE_KEY_FILE_NAME))
	if err != nil {
		return err
	}

	awsSShClient, err := utils.GetSshClient(LINUX_USER, pemBytes, ip)
	if err != nil {
		return err
	}

	publicKey, err := utils.GeneratePublicKey([]byte(privateKey))
	if err != nil {
		return err
	}

	escapedPublicKey := strings.Replace(publicKey, "/", "\\/", -1)
	command := fmt.Sprintf("sed '/%s/d' -i ~/.ssh/authorized_keys && echo 'revoked the public key: %s'", escapedPublicKey, publicKey)

	result, err := awsSShClient.ExecCommand(command)
	if err != nil {
		return err
	}
	fmt.Println(result)

	return nil
}