DAML server

Questions
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1

I am trying to develop a server that will store the DAMLcontracts into a PostgreSQL database.

Reading the documentation I could identify the following requirement for this task:

  1. the standalone JAR to expose the HTTP API;

  2. the PostgreSQL driver to intermediate the ledger and persistent storage connection;

So far I am running locally with the help of the SDK (DAML deploy), do I need the SDK for the production environment as well or is there any alternative command for this task?

Also, am I missing anything or this is pretty much the backbone of a DAML ledger server with PostgreSQL?

2

You can also run the Daml Driver for PostgreSQL as a standalone JAR. The documentation contains instructions to download it and run it, alongside further guidance.

Indeed, if you are running the Daml Driver for PostgreSQL that’s all you need.

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3

Thanks for your response.

So even the DAML command is not necessary?

Because this tutorial here uses both the driver and the deploy command.

4

You can use the SDK assistant but it’s not necessary. Deploying the JAR yourself makes the deployment leaner.

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5

Thank you very much again.

One last question, is there any place in the documentation or elsewhere where to find how to do the upload it manually?

6

What upload are you referring to?

7

If I understood correctly, the command daml deploy allocates the parties and uploads the DAR files to a specific port, and on my workflow, it seems the only time which I used the SDK, then you said I could do it manually, so I wondered where to find it.

8

Since it looks like you are using the HTTP-JSON API, this is the documentation you’re asking for:

2 Likes
9

perfect!