NotifyNewsToLine

Notify to LINE channel of latest news matched by keywords in Yahoo! Japan.

Environments

Python 2.7.10
AWS Lambda
Amazon API Gateway

How to run

Install Python dependencies to local directory:

pip install pytz -t ./libs
pip install requests -t ./libs
pip install beautifulsoup4 -t ./libs
pip install feedparser -t ./libs

Setup AWS environment using CloudFormation:

S3_BUCKET="<BUCKET>"
FUNCTION_NAME="NotifyNewsToLine"
STACK_NAME="NotifyNewsToLine"
OPERATOR="<IAM_USER>"
KEY_ALIAS="LINE_NOTIFY_BEARER_TOKEN"
ENCRYPTED_TOKEN="<ENCRYPTED_TOKEN>"

# Package Lambda code and upload it to S3 bucket.
aws cloudformation package \
  --template-file cloudformation-template.yml \
  --s3-bucket $S3_BUCKET \
  --s3-prefix "Lambda/$FUNCTION_NAME" \
  --output-template-file packaged-template.yml

# Deploy all resources in AWS. (Also create CloudFormation stack)
aws cloudformation deploy \
  --template-file packaged-template.yml \
  --stack-name $STACK_NAME \
  --capabilities CAPABILITY_NAMED_IAM \
  --parameter-overrides "LineNotifyBearerTokenKeyAliasName=$KEY_ALIAS" "EncryptedLineNotifyBearerToken=$ENCRYPTED_TOKEN" "Operator=$OPERATOR"

ACCOUNT_ID=`aws sts get-caller-identity | jq -r '.Account'`
KEY_ID=arn:aws:kms:ap-northeast-1:$ACCOUNT_ID:alias/$KEY_ALIAS
ORIGINAL_BEARER_TOKEN="<LINE_ACCESS_TOKEN>"

# Register (Encrypt) key.
# Replace Lambda's environment variable with this value.
ENCRYPTED_TOKEN=`aws kms encrypt --key-id $KEY_ID --plaintext $ORIGINAL_BEARER_TOKEN --query CiphertextBlob --output text`

# Decrypt key.
aws kms decrypt --ciphertext-blob fileb://<(echo $ENCRYPTED_TOKEN | base64 -D) --query Plaintext --output text | base64 -D

Execute:

curl -X POST -d "{\"keywords\":\"赤ちゃん,保育園,育児\", \"period\":\"1\"}" https://<API_ID>.execute-api.ap-northeast-1.amazonaws.com/prod/line_news

Cleanup:

# Destroy all resources in AWS. (Also delete CloudFormation stack)
aws cloudformation delete-stack --stack-name $STACK_NAME

tearoom6/line_news

NotifyNewsToLine

Environments

How to run