[CT-430] Add api gateway: Amplitude proxy (#63)

* Add api gateway

* lint

modules/api_gateway/main.tf

@@ -0,0 +1,86 @@
+terraform {
+  cloud {
+    organization = "dydxprotocol"
+
+    workspaces {
+      tags = ["api-gateway"]
+    }
+  }
+
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "~> 3.0"
+    }
+  }
+
+  required_version = "~> 1.3.2"
+}
+
+provider "aws" {
+  region = "ap-northeast-1"
+}
+
+resource "aws_apigatewayv2_api" "ApiGatewayV2Api" {
+  name                         = "dydx-amplitude-proxy"
+  api_key_selection_expression = "$request.header.x-api-key"
+  protocol_type                = "HTTP"
+  route_selection_expression   = "$request.method $request.path"
+
+  cors_configuration {
+    allow_credentials = false
+    allow_headers = [
+      "*"
+    ]
+    allow_methods = [
+      "*"
+    ]
+    allow_origins = [
+      "*"
+    ]
+    expose_headers = [
+      "*"
+    ]
+    max_age = 0
+  }
+
+  tags = {}
+}
+
+resource "aws_apigatewayv2_stage" "ApiGatewayV2Stage" {
+  name   = "proxy-main"
+  api_id = aws_apigatewayv2_api.ApiGatewayV2Api.id
+  tags   = {}
+
+  default_route_settings {
+    detailed_metrics_enabled = false
+    throttling_burst_limit   = 5000
+    throttling_rate_limit    = 10000
+  }
+
+  deployment_id = aws_apigatewayv2_deployment.deployment-main.id
+}
+
+resource "aws_apigatewayv2_route" "ApiGatewayV2Route" {
+  api_id             = aws_apigatewayv2_api.ApiGatewayV2Api.id
+  api_key_required   = false
+  authorization_type = "NONE"
+  route_key          = "ANY /2/httpapi"
+
+  target = "integrations/${aws_apigatewayv2_integration.ApiGatewayV2Integration.id}"
+}
+
+resource "aws_apigatewayv2_integration" "ApiGatewayV2Integration" {
+  api_id                 = aws_apigatewayv2_api.ApiGatewayV2Api.id
+  connection_type        = "INTERNET"
+  integration_method     = "ANY"
+  integration_type       = "HTTP_PROXY"
+  integration_uri        = "https://api2.amplitude.com/2/httpapi"
+  timeout_milliseconds   = 30000
+  payload_format_version = "1.0"
+}
+
+resource "aws_apigatewayv2_deployment" "deployment-main" {
+  depends_on = [aws_apigatewayv2_route.ApiGatewayV2Route]
+  api_id     = aws_apigatewayv2_api.ApiGatewayV2Api.id
+}