푸시 알림 시작하기

이 코드 예제에서는 AWS End User Messaging(이전 Pinpoint)으로 애플리케이션 생성 → 푸시 알림 채널(FCM·APNS) 활성화 → 푸시 알림 보내기 → 리소스 정리까지의 전체 흐름을 다룹니다. 핵심은 IAM 권한이 준비된 환경에서 aws pinpoint 명령을 순서대로 실행하며 각 단계의 출력과 오류 처리를 확인하는 것이에요.
출처: 문서
본문

#!/bin/bash

# AWS End User Messaging Push Getting Started Script
# This script creates an AWS End User Messaging Push application and demonstrates
# how to enable push notification channels and send a test message.
#
# Prerequisites:
# - AWS CLI installed and configured
# - Appropriate IAM permissions for Pinpoint operations
#
# Usage: ./aws-end-user-messaging-gs.sh [--auto-cleanup]

set -uo pipefail

# Security: Set secure umask for created files
umask 0077

# Set up logging
LOG_DIR="./aws-eump-logs"
mkdir -p "$LOG_DIR"
LOG_FILE="$LOG_DIR/aws-end-user-messaging-push-script-$(date +%Y%m%d-%H%M%S).log"
exec > >(tee -a "$LOG_FILE") 2>&1

echo "Starting AWS End User Messaging Push setup script..."
echo "Logging to $LOG_FILE"
echo "Timestamp: $(date)"

# Security: Track created resources for cleanup
declare -a TEMP_FILES=()
declare -a AWS_RESOURCES=()

# Cleanup function with improved security
cleanup() {
    local exit_code=$?
    echo "Cleaning up temporary resources..."
    
    # Remove temporary files securely
    for temp_file in "${TEMP_FILES[@]+"${TEMP_FILES[@]}"}"; do
        if [ -f "$temp_file" ]; then
            shred -vfz -n 3 "$temp_file" 2>/dev/null || rm -f "$temp_file"
        fi
    done
    
    # Optionally delete AWS resources
    if [ "${DELETE_AWS_RESOURCES:-false}" = "true" ]; then
        for resource in "${AWS_RESOURCES[@]+"${AWS_RESOURCES[@]}"}"; do
            echo "Deleting AWS resource: $resource"
            aws pinpoint delete-app --application-id "$resource" 2>/dev/null || \
                echo "Warning: Failed to delete application $resource"
        done
    fi
    
    exit "$exit_code"
}

trap cleanup EXIT INT TERM

# Function to check for errors in command output
check_error() {
    local output=$1
    local cmd=$2
    local ignore_error=${3:-false}
    
    if echo "$output" | grep -qi "error\|exception\|fail"; then
        echo "ERROR: Command failed: $cmd" >&2
        echo "Error details: $output" >&2
        
        if [ "$ignore_error" = "true" ]; then
            echo "Ignoring error and continuing..." >&2
            return 1
        else
            return 2
        fi
    fi
    
    return 0
}

# Function to validate AWS CLI is configured
validate_aws_cli() {
    echo "Validating AWS CLI configuration..."
    
    # Check if AWS CLI is installed
    if ! command -v aws &> /dev/null; then
        echo "ERROR: AWS CLI is not installed. Please install it first." >&2
        echo "Visit: https://docs.aws.amazon.com/cli/latest/userguide/getting-started-install.html" >&2
        return 1
    fi
    
    # Check AWS CLI version
    AWS_VERSION=$(aws --version 2>&1 | head -n1)
    echo "AWS CLI version: $AWS_VERSION"
    
    # Verify credentials are set (check for credential env vars or config file)
    if ! aws sts get-caller-identity &> /dev/null; then
        echo "ERROR: AWS CLI credentials are not configured or invalid." >&2
        echo "Please configure credentials via environment variables, credential file, or 'aws configure'" >&2
        return 1
    fi
    
    # Get current AWS identity and region
    CALLER_IDENTITY=$(aws sts get-caller-identity)
    CURRENT_REGION=$(aws configure get region 2>/dev/null || echo "us-east-1")
    echo "AWS CLI configured for:"
    echo "$CALLER_IDENTITY"
    echo "Current region: $CURRENT_REGION"
    echo ""
    
    return 0
}

# Function to check if jq is available for JSON parsing
check_json_tools() {
    if command -v jq &> /dev/null; then
        USE_JQ=true
        echo "jq is available for JSON parsing"
    else
        USE_JQ=false
        echo "jq is not available, using grep for JSON parsing"
        echo "Consider installing jq for better JSON handling: https://stedolan.github.io/jq/"
    fi
}

# Function to extract JSON values safely
extract_json_value() {
    local json=$1
    local key=$2
    
    if [ "$USE_JQ" = "true" ]; then
        echo "$json" | jq -r ".ApplicationResponse.$key // empty" 2>/dev/null || echo ""
    else
        # Fallback to grep method with better validation
        echo "$json" | grep -o "\"$key\": \"[^\"]*" | cut -d'"' -f4 | head -n1 || echo ""
    fi
}

# Function to validate required IAM permissions
validate_permissions() {
    echo "Validating IAM permissions..."
    
    # Test basic Pinpoint permissions
    if ! aws pinpoint get-apps > /dev/null 2>&1; then
        echo "WARNING: Unable to list Pinpoint applications." >&2
        echo "Please ensure you have appropriate IAM permissions for Pinpoint operations." >&2
        echo "Required permissions:" >&2
        echo "  - mobiletargeting:GetApps" >&2
        echo "  - mobiletargeting:CreateApp" >&2
        echo "  - mobiletargeting:DeleteApp" >&2
        echo "  - mobiletargeting:UpdateGcmChannel" >&2
        echo "  - mobiletargeting:UpdateApnsChannel" >&2
        echo "  - mobiletargeting:SendMessages" >&2
    else
        echo "Basic Pinpoint permissions validated."
    fi
}

# Function to validate input parameters
validate_input() {
    local app_name=$1
    
    # Validate app name length and characters
    if [ ${#app_name} -gt 64 ]; then
        echo "ERROR: Application name exceeds maximum length of 64 characters" >&2
        return 1
    fi
    
    if ! [[ "$app_name" =~ ^[a-zA-Z0-9_-]+$ ]]; then
        echo "ERROR: Application name contains invalid characters" >&2
        return 1
    fi
    
    return 0
}

# Function to create secure temporary files
create_temp_file() {
    local temp_file
    temp_file=$(mktemp) || {
        echo "ERROR: Failed to create temporary file" >&2
        return 1
    }
    chmod 600 "$temp_file"
    TEMP_FILES+=("$temp_file")
    echo "$temp_file"
}

# Validate prerequisites
if ! validate_aws_cli; then
    exit 1
fi

check_json_tools
validate_permissions

# Generate a random suffix for resource names to avoid conflicts
RANDOM_SUFFIX=$(LC_ALL=C tr -dc 'a-z0-9' < /dev/urandom | fold -w 8 | head -n1)
APP_NAME="PushNotificationApp-${RANDOM_SUFFIX}"

# Validate input
if ! validate_input "$APP_NAME"; then
    exit 1
fi

echo "Creating application with name: $APP_NAME"

# Step 1: Create an application
echo "Executing: aws pinpoint create-app --create-application-request Name=${APP_NAME}"
CREATE_APP_OUTPUT=$(aws pinpoint create-app --create-application-request "Name=${APP_NAME},tags={project=doc-smith,tutorial=aws-end-user-messaging-gs}" 2>&1)

if ! check_error "$CREATE_APP_OUTPUT" "create-app"; then
    exit 1
fi

echo "Application created successfully:"
echo "$CREATE_APP_OUTPUT"

# Extract the application ID from the output
APP_ID=$(extract_json_value "$CREATE_APP_OUTPUT" "Id")

if [ -z "$APP_ID" ] || [ "$APP_ID" = "null" ]; then
    echo "ERROR: Failed to extract application ID from output" >&2
    echo "Output was: $CREATE_APP_OUTPUT" >&2
    exit 1
fi

echo "Application ID: $APP_ID"
AWS_RESOURCES+=("$APP_ID")

# Step 2: Enable FCM (GCM) channel with a sample API key
echo ""
echo "==========================================="
echo "ENABLING FCM (GCM) CHANNEL"
echo "==========================================="
echo "Note: This is using a placeholder API key for demonstration purposes only."
echo "In a production environment, you should use your actual FCM API key from Firebase Console."
echo ""
echo "IMPORTANT: The following command will likely fail because we're using a placeholder API key."
echo "This is expected behavior for this demonstration script."

echo "Executing: aws pinpoint update-gcm-channel --application-id $APP_ID --gcm-channel-request ..."
UPDATE_GCM_OUTPUT=$(aws pinpoint update-gcm-channel \
    --application-id "$APP_ID" \
    --gcm-channel-request '{"Enabled": true, "ApiKey": "sample-fcm-api-key-for-demo-only"}' 2>&1)

# We'll ignore this specific error since we're using a placeholder API key
if check_error "$UPDATE_GCM_OUTPUT" "update-gcm-channel" "true"; then
    echo "FCM channel enabled successfully:"
    echo "$UPDATE_GCM_OUTPUT"
else
    echo "As expected, FCM channel update failed with the placeholder API key."
    echo "Error details: $UPDATE_GCM_OUTPUT"
    echo ""
    echo "To enable FCM in production:"
    echo "1. Go to Firebase Console (https://console.firebase.google.com/)"
    echo "2. Create or select your project"
    echo "3. Go to Project Settings > Cloud Messaging"
    echo "4. Copy the Server Key"
    echo "5. Replace 'sample-fcm-api-key-for-demo-only' with your actual Server Key"
fi

# Step 3: Try to enable APNS channel (this will also fail without real certificates)
echo ""
echo "==========================================="
echo "ENABLING APNS CHANNEL (OPTIONAL)"
echo "==========================================="
echo "Attempting to enable APNS channel with placeholder certificate..."
echo "This will also fail without real APNS certificates, which is expected."

# Create a placeholder APNS configuration
echo "Executing: aws pinpoint update-apns-channel --application-id $APP_ID --apns-channel-request ..."
UPDATE_APNS_OUTPUT=$(aws pinpoint update-apns-channel \
    --application-id "$APP_ID" \
    --apns-channel-request '{"Enabled": true, "Certificate": "placeholder-certificate", "PrivateKey": "placeholder-private-key"}' 2>&1)

if check_error "$UPDATE_APNS_OUTPUT" "update-apns-channel" "true"; then
    echo "APNS channel enabled successfully:"
    echo "$UPDATE_APNS_OUTPUT"
else
    echo "As expected, APNS channel update failed with placeholder certificates."
    echo "Error details: $UPDATE_APNS_OUTPUT"
    echo ""
    echo "To enable APNS in production:"
    echo "1. Generate APNS certificates from Apple Developer Console"
    echo "2. Convert certificates to PEM format"
    echo "3. Use the actual certificate and private key in the update-apns-channel command"
fi

# Step 4: Create message files for different platforms
echo ""
echo "==========================================="
echo "CREATING MESSAGE FILES"
echo "==========================================="

# Create FCM message file securely
GCM_MESSAGE_FILE=$(create_temp_file)
echo "Creating FCM message file..."
cat > "$GCM_MESSAGE_FILE" << 'EOF'
{
  "Addresses": {
    "SAMPLE-DEVICE-TOKEN-FCM": {
      "ChannelType": "GCM"
    }
  },
  "MessageConfiguration": {
    "GCMMessage": {
      "Action": "OPEN_APP",
      "Body": "Hello from AWS End User Messaging Push! This is an FCM notification.",
      "Priority": "normal",
      "SilentPush": false,
      "Title": "My First FCM Push Notification",
      "TimeToLive": 30,
      "Data": {
        "key1": "value1",
        "key2": "value2"
      }
    }
  }
}
EOF

# Create APNS message file securely
APNS_MESSAGE_FILE=$(create_temp_file)
echo "Creating APNS message file..."
cat > "$APNS_MESSAGE_FILE" << 'EOF'
{
  "Addresses": {
    "SAMPLE-DEVICE-TOKEN-APNS": {
      "ChannelType": "APNS"
    }
  },
  "MessageConfiguration": {
    "APNSMessage": {
      "Action": "OPEN_APP",
      "Body": "Hello from AWS End User Messaging Push! This is an APNS notification.",
      "Priority": "normal",
      "SilentPush": false,
      "Title": "My First APNS Push Notification",
      "TimeToLive": 30,
      "Badge": 1,
      "Sound": "default"
    }
  }
}
EOF

echo "Message files created:"
echo "- FCM message file (for FCM/Android)"
echo "- APNS message file (for APNS/iOS)"
echo ""
echo "Note: These messages use placeholder device tokens and will not actually be delivered."
echo "To send real messages, you would need to replace the sample device tokens with actual ones."

# Step 5: Demonstrate how to send messages (this will fail with placeholder tokens)
echo ""
echo "==========================================="
echo "DEMONSTRATING MESSAGE SENDING"
echo "==========================================="
echo "Attempting to send FCM message (will fail with placeholder token)..."

echo "Executing: aws pinpoint send-messages --application-id $APP_ID --message-request file://<gcm-message>"
SEND_FCM_OUTPUT=$(aws pinpoint send-messages \
    --application-id "$APP_ID" \
    --message-request "file://$GCM_MESSAGE_FILE" 2>&1)

if check_error "$SEND_FCM_OUTPUT" "send-messages (FCM)" "true"; then
    echo "FCM message sent successfully:"
    echo "$SEND_FCM_OUTPUT"
else
    echo "As expected, FCM message sending failed with placeholder token."
    echo "Error details: $SEND_FCM_OUTPUT"
fi

echo ""
echo "Attempting to send APNS message (will fail with placeholder token)..."

echo "Executing: aws pinpoint send-messages --application-id $APP_ID --message-request file://<apns-message>"
SEND_APNS_OUTPUT=$(aws pinpoint send-messages \
    --application-id "$APP_ID" \
    --message-request "file://$APNS_MESSAGE_FILE" 2>&1)

if check_error "$SEND_APNS_OUTPUT" "send-messages (APNS)" "true"; then
    echo "APNS message sent successfully:"
    echo "$SEND_APNS_OUTPUT"
else
    echo "As expected, APNS message sending failed with placeholder token."
    echo "Error details: $SEND_APNS_OUTPUT"
fi

# Step 6: Show application details
echo ""
echo "==========================================="
echo "APPLICATION DETAILS"
echo "==========================================="
echo "Retrieving application details..."

echo "Executing: aws pinpoint get-app --application-id $APP_ID"
GET_APP_OUTPUT=$(aws pinpoint get-app --application-id "$APP_ID" 2>&1)
if check_error "$GET_APP_OUTPUT" "get-app"; then
    echo "Application details:"
    echo "$GET_APP_OUTPUT"
fi

# Display summary of created resources
echo ""
echo "==========================================="
echo "RESOURCES CREATED"
echo "==========================================="
echo "AWS Resources:"
for resource in "${AWS_RESOURCES[@]+"${AWS_RESOURCES[@]}"}"; do
    echo "- Application: $resource"
done

echo ""
echo "Files created:"
echo "- $LOG_FILE (script log)"

# Auto-cleanup information
echo ""
echo "==========================================="
echo "CLEANUP INFORMATION"
echo "==========================================="
echo "This script created AWS resources that may incur charges."
echo "AWS resources will be automatically cleaned up on script exit."
echo ""
echo "To manually delete resources later, use:"
echo "  aws pinpoint delete-app --application-id $APP_ID"

# Set flag to delete AWS resources on cleanup
DELETE_AWS_RESOURCES=true

echo ""
echo "==========================================="
echo "SCRIPT COMPLETED SUCCESSFULLY"
echo "==========================================="
echo "This script demonstrated:"
echo "1. Creating an AWS End User Messaging Push application"
echo "2. Attempting to enable FCM and APNS channels (with placeholder credentials)"
echo "3. Creating message templates for different platforms"
echo "4. Demonstrating message sending commands (with placeholder tokens)"
echo "5. Retrieving application details"
echo "6. Proper cleanup of resources"
echo ""
echo "Security best practices implemented:"
echo "- Secure temporary file handling with restricted permissions"
echo "- Input validation for application names"
echo "- Error handling with proper exit codes"
echo "- Credential validation before AWS operations"
echo "- Automatic cleanup on script exit"
echo "- Secure file destruction for sensitive data"
echo ""
echo "For production use:"
echo "- Replace placeholder API keys with real FCM server keys"
echo "- Replace placeholder certificates with real APNS certificates"
echo "- Replace placeholder device tokens with real device tokens"
echo "- Use AWS IAM roles instead of long-term credentials"
echo "- Implement comprehensive error handling"
echo "- Store sensitive credentials in AWS Secrets Manager or Parameter Store"
echo "- Enable CloudTrail for audit logging"
echo "- Use VPC endpoints for private AWS API access"
echo ""
echo "Log file: $LOG_FILE"
echo "Script completed at: $(date)"
참고: 이 예제의 전체 소스와 실행 방법은 GitHub의 샘플 개발자 튜토리얼 저장소에서 확인할 수 있어요.
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