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Azure Functions の http routePrefix を host.json はそのまま環境変数で変更し
Azure Functions の Http Trigger は、デフォルトで api という routePrefix が付きます。これを、host.json を変更せずに、Azure Functions の環境変数に設定して、routePrefix を変更してみました。
検証用 Azure Functions を用意
bash
prefix=mnrfunc
region=japaneast
az group create \
--name ${prefix}-rg \
--location $region
az storage account create \
--name ${prefix}stor \
--resource-group ${prefix}-rg \
--sku Standard_LRS
az functionapp create \
--name ${prefix} \
--resource-group ${prefix}-rg \
--consumption-plan-location $region \
--runtime dotnet \
--functions-version 4 \
--storage-account ${prefix}stor \
--disable-app-insights \
--https-only \
--os-type Linux
func init $prefix --dotnet
cd $prefix
func new --name httpsample --template "HTTP trigger" --authlevel "anonymous"
func azure functionapp publish $prefix
routePrefix 変更前の動作確認
bash
$ curl https://$prefix.azurewebsites.net/api/httpsample
This HTTP triggered function executed successfully. Pass a name in the query string or in the request body for a personalized response.
環境変数に routePrefix を prod に設定
bash
az webapp config appsettings set \
--name ${prefix} \
--resource-group ${prefix}-rg \
--settings AzureFunctionsJobHost__extensions__http__routePrefix=prod
routePrefix 変更後の動作確認
bash
$ curl -I https://$prefix.azurewebsites.net/api/httpsample
HTTP/2 404
date: Fri, 15 Dec 2023 23:39:44 GMT
server: Kestrel
$ curl https://$prefix.azurewebsites.net/prod/httpsample
This HTTP triggered function executed successfully. Pass a name in the query string or in the request body for a personalized response.
（参考） host.json で routePrefix を設定する場合
host.json
{
"version": "2.0",
"logging": {
"applicationInsights": {
"samplingSettings": {
"isEnabled": true,
"excludedTypes": "Request"
}
}
},
"extensions": {
"http": {
"routePrefix": "prod"
}
}
}
参考情報
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