Set up logging

ZenStack uses the following levels to control server-side logging:

error

Error level logging
warn

Warning level logging
info

Info level logging
verbose

Verbose level logging
query

Detailed database query logging

By default, ZenStack prints error and warn level of logging with console.error and console.log, respectively. You can also control the logging behavior by providing a zenstack.config.json file at the root of your project.

You can turn log levels on and off in zenstack.config.json:

{
    "log": ["verbose", "info"]
}

The settings shown above is an shorthand for:

{
    "log": [
        {
            "level": "verbose",
            "emit": "stdout"
        },
        {
            "level": "info",
            "emit": "stdout"
        }
    ]
}

You can also configure ZenStack to emit log as event instead of dumping to stdout, like:

{
    "log": [
        {
            "level": "info",
            "emit": "event"
        }
    ]
}

To consume the events:

import service from '@zenstackhq/runtime';

service.$on('info', (event) => {
    console.log(event.timestamp, event.message);
});

You can also mix and match stdout output with event emitting, like:

{
    "log": [
        {
            "level": "info",
            "emit": "stdout"
        },
        {
            "level": "info",
            "emit": "event"
        }
    ]
}

The settings in zenstack.config.json controls logging of both ZenStack and the underlying Prisma instance.

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Set up logging

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