feelwa17 / api

api

REST and Websocket API bridge to AlephZero.

Examples

The following are javascript examples you can run from a serverless-webpage.

The default port is 24880.

In all the examples below, we show all the available options.

The value on the right hand side of an option is the default. If the value is marked as "...", that implies that there is no default and the value is required to be set.

Publish

fetch(`http://${api_addr}/api/pub`, {
    method: "POST",
    body: JSON.stringify({
        topic: "...",                     // required
        packet: {
            headers: [                    // optional
                ["key", "val"],
                ...
            ],
            payload: "...",               // required
        },
        request_encoding: "none",         // optional, one of "none", "base64"
    })
})
.then((r) => { return r.text() })
.then((msg) => { console.assert(msg == "success", msg) })

Subscribe

ws = new WebSocket(`ws://${api_addr}/wsapi/sub`)
ws.onopen = () => {
    ws.send(JSON.stringify({
        topic: "...",                 // required
        init: "AWAIT_NEW",            // optional, one of "OLDEST", "MOST_RECENT", "AWAIT_NEW"
        iter: "NEXT",                 // optional, one of "NEXT", "NEWEST"
        response_encoding: "none",    // optional, one of "none", "base64"
        scheduler: "ON_DRAIN",        // optional, one of "IMMEDIATE", "ON_ACK", "ON_DRAIN"
    }))
}
ws.onmessage = (evt) => {
    ... evt.data ...
}

Rpc Request

fetch(`http://${api_addr}/api/rpc`, {
    method: "POST",
    body: JSON.stringify({
        topic: "...",                     // required
        packet: {
            headers: [                    // optional
                ["key", "val"],
                ...
            ],
            payload: "...",               // required
        },
        request_encoding: "none",         // optional, one of "none", "base64"
        response_encoding: "none",        // optional, one of "none", "base64"
    })
})
.then((r) => { return r.text() })
.then((msg) => { console.log(msg) })

Prpc Request

ws = new WebSocket(`ws://${api_addr}/wsapi/prpc`)
ws.onopen = () => {
    ws.send(JSON.stringify({
        topic: "...",                 // required
        iter: "NEXT",                 // optional, one of "NEXT", "NEWEST"
        request_encoding: "none",     // optional, one of "none", "base64"
        response_encoding: "none",    // optional, one of "none", "base64"
        scheduler: "ON_DRAIN",        // optional, one of "IMMEDIATE", "ON_ACK", "ON_DRAIN"
    }))
}
ws.onmessage = (evt) => {
    ... evt.data ...
}

Logs

ws = new WebSocket(`ws://${api_addr}/wsapi/log`)
ws.onopen = () => {
    ws.send(JSON.stringify({
        topic: "...",                 // required
        level: "INFO",                // optional, one of "DBG", "INFO", "WARN", "ERR", "CRIT"
        init: "AWAIT_NEW",            // optional, one of "OLDEST", "MOST_RECENT", "AWAIT_NEW"
        iter: "NEXT",                 // optional, one of "NEXT", "NEWEST"
        response_encoding: "none",    // optional, one of "none", "base64"
        scheduler: "ON_DRAIN",        // optional, one of "IMMEDIATE", "ON_ACK", "ON_DRAIN"
    }))
}
ws.onmessage = (evt) => {
    ... evt.data ...
}

Discovery

ws = new WebSocket(`ws://${api_addr}/wsapi/discover`)
ws.onopen = () => {
    ws.send(JSON.stringify({
        protocol: "...",              // required, one of "file", "pubsub", "rpc", "prpc", "log", "cfg"
        topic: "**/*",                // optional
        scheduler: "ON_DRAIN",        // optional, one of "IMMEDIATE", "ON_ACK", "ON_DRAIN"
    }))
}
ws.onmessage = (evt) => {
    ... evt.data ...
}

Running the code

git clone this repo and run:

make run

Or use a pre-compiled docker image:

docker run \
    --rm -it \
    --name=a0_api \
    --ipc=host \
    --pid=host \
    -p 24880:24880 \
    ghcr.io/alephzero/api:latest