API tanpa server

Streaming Data dengan AWS Kinesis dan Lambda

Maksim Pecherskiy

Data Engineer

Pelajaran sebelumnya

Memberi akses ke data

API sederhana

Tambahkan pemicu

Uji API baru Anda

API pertama kita

Parameter API

Contoh request

https://.../speederReporterApi?date=20200620

Contoh event

{
  "queryStringParameters": {
    "date": "20200620"
  },
  "isBase64Encoded": false
}

Handler Lambda

import json, boto3
import awswrangler as wr
import pandas as pd

session = boto3.Session(aws_access_key_id = AWS_KEY, 
                        aws_secret_access_key = AWS_SECRET, 
                        region_name="us-east-1")

Handler Lambda

def lambda_handler(event, context):
    filter_date = event['queryStringParameters']['date']

    df = wr.s3.read_csv(
        f"s3://sd-vehicle-data/speeders_daily/{filter_date}.csv", 
        boto3_session=session, 
        delimiter=" ")

Kirim respons data

def lambda_handler(event, context):
    ...
    return {
        'statusCode': 200,
        'headers': {
            "content-type" : "application/json"
        },
        'body': df.to_json()
    }

Respons langsung

https://.../default/speederReporterApi?date=20200621

[
  {
      "record_id":"939ed1d1-1740-420c-8906-445278573c7f",
      "timestamp":"4:25:06.000",
      "vin":"4FTEX4944AK844294",
      "lon":106.9447146,
      "lat":-6.3385652,
      "speed":25
  },
  {
      "record_id":"f29a5b3d-d0fa-43c0-9e1a-e2a5cdb8be7a",
      ...
  },

  ...
]

Memicu Lambda lain

def trigger_recalc():
  lambda_client = boto3.client("s3", 
                            aws_access_key_id = AWS_KEY, 
                            aws_secret_access_key = AWS_SECRET, 
                            region_name = 'us-east-1')

def lambda_handler(event, context):
  ...

ARN speederAggregator

Invoke

def trigger_recalc():
  ...
  lambda_client.invoke(
    FunctionName='arn:aws:lambda:us-east-1:458913182630:function:speederAggregator',
    InvocationType='Event', # (or RequestResponse)
  )

Ulasan

Ayo berlatih!

Streaming Data dengan AWS Kinesis dan Lambda