feat: overwrite host headers when custom domain name (#105)

Author: vincentsarago

lib/stac-api/index.ts

@@ -8,7 +8,7 @@ import {
   Duration,
   aws_logs,
 } from "aws-cdk-lib";
-import { IDomainName, HttpApi } from "@aws-cdk/aws-apigatewayv2-alpha";
+import { IDomainName, HttpApi, ParameterMapping, MappingValue} from "@aws-cdk/aws-apigatewayv2-alpha";
 import { HttpLambdaIntegration } from "@aws-cdk/aws-apigatewayv2-integrations-alpha";
 import { Construct } from "constructs";
 import { CustomLambdaFunctionProps } from "../utils";
@@ -54,7 +54,13 @@ export class PgStacApiLambda extends Construct {
       defaultDomainMapping: props.stacApiDomainName ? {
         domainName: props.stacApiDomainName
       } : undefined,
-      defaultIntegration: new HttpLambdaIntegration("integration", this.stacApiLambdaFunction),
+      defaultIntegration: new HttpLambdaIntegration(
+        "integration",
+        this.stacApiLambdaFunction,
+        props.stacApiDomainName ? {
+            parameterMapping: new ParameterMapping().overwriteHeader('host', MappingValue.custom(props.stacApiDomainName.name))
+        } : undefined
+      ),
     });
 
     this.url = stacApi.url!;

lib/tipg-api/index.ts

@@ -8,7 +8,7 @@ import {
     CfnOutput,
     Duration,
   } from "aws-cdk-lib";
-  import { IDomainName, HttpApi } from "@aws-cdk/aws-apigatewayv2-alpha";
+  import { IDomainName, HttpApi, ParameterMapping, MappingValue} from "@aws-cdk/aws-apigatewayv2-alpha";
   import { HttpLambdaIntegration } from "@aws-cdk/aws-apigatewayv2-integrations-alpha";
   import { Construct } from "constructs";
   import { CustomLambdaFunctionProps } from "../utils";
@@ -52,7 +52,13 @@ import {
         defaultDomainMapping: props.tipgApiDomainName ? {
           domainName: props.tipgApiDomainName
         } : undefined,
-        defaultIntegration: new HttpLambdaIntegration("integration", this.tiPgLambdaFunction),
+        defaultIntegration: new HttpLambdaIntegration(
+          "integration",
+          this.tiPgLambdaFunction,
+          props.tipgApiDomainName ? {
+              parameterMapping: new ParameterMapping().overwriteHeader('host', MappingValue.custom(props.tipgApiDomainName.name))
+          } : undefined
+        ),
       });
 
       this.url = tipgApi.url!;

lib/titiler-pgstac-api/index.ts

@@ -9,7 +9,7 @@ import {
     Duration,
     aws_logs
   } from "aws-cdk-lib";
-  import { IDomainName, HttpApi } from "@aws-cdk/aws-apigatewayv2-alpha";
+  import { IDomainName, HttpApi, ParameterMapping, MappingValue} from "@aws-cdk/aws-apigatewayv2-alpha";
   import { HttpLambdaIntegration } from "@aws-cdk/aws-apigatewayv2-integrations-alpha";
   import { Construct } from "constructs";
 import { CustomLambdaFunctionProps } from "../utils";
@@ -78,7 +78,13 @@ import { CustomLambdaFunctionProps } from "../utils";
         defaultDomainMapping: props.titilerPgstacApiDomainName ? {
           domainName: props.titilerPgstacApiDomainName
         } : undefined,
-        defaultIntegration: new HttpLambdaIntegration("integration", this.titilerPgstacLambdaFunction),
+        defaultIntegration: new HttpLambdaIntegration(
+          "integration",
+          this.titilerPgstacLambdaFunction,
+          props.titilerPgstacApiDomainName ? {
+              parameterMapping: new ParameterMapping().overwriteHeader('host', MappingValue.custom(props.titilerPgstacApiDomainName.name))
+          } : undefined
+        ),
       });
 
       this.url = stacApi.url!;