How to publish API as an on-premise API in Azure ?

Vamshi Kishore KALIKOTA 51

What are possible services where we can publish API as an on-premise API in Azure.
And if there are any options to publish API as an on-premise API from Azure Logic Apps and Azure API Management.

JayaC-MSFT 5,526 Reputation points

2020-09-17T12:28:57.43+00:00

@Vamshi Kishore KALIKOTA Are you trying to access on-premise or IIS hosted APIs from azure logic app/azure APIM ? Could you please explain the "create on-premise API" ?
Vamshi Kishore KALIKOTA 51 Reputation points

2020-09-17T12:31:45.08+00:00

No, not accessing on-premise API in Azure.....but we need to create on-premise API in Azure.
And need to know like which all are the services used for creating on-premsie API's in AZzure.
And one more thing is like whether we can create on-premise API using Azure Logic app.
JayaC-MSFT 5,526 Reputation points

2020-09-17T12:44:53.957+00:00

Are you trying to migrate your on-premise services to Azure or create a new service from scratch. What is the exact requirement?
Vamshi Kishore KALIKOTA 51 Reputation points

2020-09-17T12:48:14.44+00:00

We need to create an API from Azure which should work only on on-premise system.

Actual requirement is like we have consumed on-premise API using Logic App Custom connector and Logic App.
Now, the problem is we need to expose cloud generated API from Logic App HTTP trigger as an On-Premise API.

1 answer

JayaC-MSFT 5,526 Reputation points

2020-09-17T13:06:55.28+00:00

@Vamshi Kishore KALIKOTA If you would like to connect to the logic app you can make a REST api call, using http client, to connect to the service endpoint. Something similar to :

If you want to secure access to your logic app, please take a look into this document : logic-apps-securing-a-logic-app
Does this answer your question?
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Vamshi Kishore KALIKOTA 51 Reputation points

2020-09-17T13:48:20.29+00:00

Hi @JayaC-MSFT , Thank you for the info.
But can you please explain in some detail about the screenshot which you have provided.

JayaC-MSFT 5,526 Reputation points

2020-09-17T14:47:43.437+00:00

In the example screenshot , the user is using httpclient to send the http request.
If you are using a Http connector then use the generated url

Now the third line in the screenshot is getting the response. You will make a post call with the request body or query parameters ( depending on your requirement)

You may also check this

Hope this helps. If yes, then please "accept the answer" and "Up-vote" so that it helps others in the community.

Vamshi Kishore KALIKOTA 51 Reputation points

2020-09-18T05:09:17.547+00:00

Yes @JayaC-MSFT , request body and query parameters we can use for getting response...
but,
One thing here is how do I expose/publish that HTTP POST API as an on-premise API ?

JayaC-MSFT 5,526 Reputation points

2020-09-18T08:57:15.87+00:00

You can create a web API application ,implement the REST call to logic app in the application and then publish it in your on-premise server. ( You may test it with IIS server). So you will make a call to the locally deployed API of the application and internally it would make a call to the logic app endpoint.
Does this make sense and help? If it does help, then please "accept the answer" and "Up-vote" so that it helps others in the community.

JayaC-MSFT 5,526 Reputation points

2020-09-20T12:17:59.43+00:00

@Vamshi Kishore KALIKOTA I haven't heard back from you. Please let us know if the answer provided helped in this case!

Vamshi Kishore KALIKOTA 51 Reputation points

2020-09-20T14:28:48.91+00:00

Okay @JayaC-MSFT , but where we need to create web API application ?

JayaC-MSFT 5,526 Reputation points

2020-09-20T16:59:28.353+00:00

You will have to create the API application in your on-premise server i.e. you will develop the application locally and will deploy the application to a server.

Vamshi Kishore KALIKOTA 51 Reputation points

2020-09-21T04:32:30.41+00:00

Hi @JayaC-MSFT , you are talking about the below link..

https://www.codit.eu/blog/connecting-to-on-premise-http-endpoints-from-logic-app/#:~:text=Log%20on%20to%20your%20azure,of%20your%20on%2Dpremise%20webservice.

JayaC-MSFT 5,526 Reputation points

2020-09-21T05:06:37.407+00:00

You may refer to this ( in this example a call is made from an azure function, but you can implement the same in any application - web API or console , depending on your requirement) and make a call to the logic app endpoint. If this doesn't clear your doubts you may send an email with subject line “Attn:Jaya” to AzCommunity[at]Microsoft[dot]com referencing this thread to connect offline so that I can provide a quick and specialized assistance.
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