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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| import { join } from "path"; | ||
| import { secrets } from "@cocalc/backend/data"; | ||
| import { readFile } from "node:fs/promises"; | ||
| import getLogger from "@cocalc/backend/logger"; | ||
| import { connect, credsAuthenticator } from "nats"; | ||
|
|
||
| const logger = getLogger("backend:nats"); | ||
|
|
||
| export async function getCreds(): Promise<string | undefined> { | ||
| const filename = join(secrets, "nats.creds"); | ||
| try { | ||
| return (await readFile(filename)).toString().trim(); | ||
| } catch { | ||
| logger.debug( | ||
| `getCreds -- please create ${filename}, which is missing. Nothing will work.`, | ||
| ); | ||
| return undefined; | ||
| } | ||
| } | ||
|
|
||
| let nc: Awaited<ReturnType<typeof connect>> | null = null; | ||
| export async function getConnection() { | ||
| logger.debug("connecting to nats"); | ||
|
|
||
| if (nc == null) { | ||
| const creds = await getCreds(); | ||
| nc = await connect({ | ||
| authenticator: credsAuthenticator(new TextEncoder().encode(creds)), | ||
| }); | ||
| logger.debug(`connected to ${nc.getServer()}`); | ||
| } | ||
| return nc; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| /* | ||
| echo "require('@cocalc/database/nats').init()" | COCALC_MODE='single-user' DEBUG_CONSOLE=yes DEBUG=cocalc:* node | ||
| */ | ||
|
|
||
| import getLogger from "@cocalc/backend/logger"; | ||
| import { JSONCodec } from "nats"; | ||
| import { isValidUUID } from "@cocalc/util/misc"; | ||
| import userQuery from "@cocalc/database/user-query"; | ||
| import { getConnection } from "@cocalc/backend/nats"; | ||
|
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| const logger = getLogger("database:nats"); | ||
|
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| const jc = JSONCodec(); | ||
|
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| export async function init() { | ||
| const subject = "hub.*.*.db"; | ||
| logger.debug(`init -- subject='${subject}', options=`, { | ||
| queue: "0", | ||
| }); | ||
| const nc = await getConnection(); | ||
| const sub = nc.subscribe(subject, { queue: "0" }); | ||
| for await (const mesg of sub) { | ||
| handleRequest(mesg); | ||
| } | ||
| } | ||
|
|
||
| async function handleRequest(mesg) { | ||
| console.log({ subject: mesg.subject }); | ||
| let resp; | ||
| try { | ||
| const segments = mesg.subject.split("."); | ||
| const uuid = segments[2]; | ||
| if (!isValidUUID(uuid)) { | ||
| throw Error(`invalid uuid '${uuid}'`); | ||
| } | ||
| const type = segments[1]; // 'project' or 'account' | ||
| let account_id, project_id; | ||
| if (type == "project") { | ||
| project_id = uuid; | ||
| account_id = undefined; | ||
| } else if (type == "account") { | ||
| project_id = undefined; | ||
| account_id = uuid; | ||
| } else { | ||
| throw Error("must be project or account"); | ||
| } | ||
| const { name, args } = jc.decode(mesg.data) ?? ({} as any); | ||
| if (!name) { | ||
| throw Error("api endpoint name must be given in message"); | ||
| } | ||
| logger.debug("handling hub db request:", { | ||
| account_id, | ||
| project_id, | ||
| name, | ||
| args, | ||
| }); | ||
| resp = await getResponse({ name, args, account_id, project_id }); | ||
| } catch (err) { | ||
| resp = { error: `${err}` }; | ||
| } | ||
| mesg.respond(jc.encode(resp)); | ||
| } | ||
|
|
||
| async function getResponse({ name, args, account_id, project_id }) { | ||
| if (name == "userQuery") { | ||
| return await userQuery({ ...args[0], account_id, project_id }); | ||
| } else { | ||
| throw Error(`name='${name}' not implemented`); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,29 +1,12 @@ | ||
| import { connect, credsAuthenticator } from "nats"; | ||
| import getLogger from "@cocalc/backend/logger"; | ||
| import { initAPI } from "./api"; | ||
| import { getConnection } from "@cocalc/backend/nats"; | ||
|
|
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| const logger = getLogger("server:nats"); | ||
|
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| const creds = `-----BEGIN NATS USER JWT----- | ||
| eyJ0eXAiOiJKV1QiLCJhbGciOiJlZDI1NTE5LW5rZXkifQ.eyJqdGkiOiJVTDJaWEdFWFFKTzVRNjdLU1hKNDdERFpKSFE3QUFWMjdHWUtBN1ZJVjVaT01DQU1SN1hBIiwiaWF0IjoxNzM3NTY3OTQwLCJpc3MiOiJBRDRHNlI2MkJERFFVU0NKVkxaTkE3RVM3UjNBNkRXWExZVVdHWlY3NEVKMlM2VkJDN0RRVk0zSSIsIm5hbWUiOiJhZG1pbiIsInN1YiI6IlVBV1hZVUpYSEFXQzNPSFFURE1SQVBSWVpNNFQ0RkZDRk1TTVFLNDVCWU1SS0ZSRE5RTjQ0Vk1SIiwibmF0cyI6eyJwdWIiOnsiYWxsb3ciOlsiXHUwMDNlIl19LCJzdWIiOnsiYWxsb3ciOlsiXHUwMDNlIl19LCJzdWJzIjotMSwiZGF0YSI6LTEsInBheWxvYWQiOi0xLCJ0eXBlIjoidXNlciIsInZlcnNpb24iOjJ9fQ.Pv9-T3P7cO1VSFiNocGA0vCGvwQ-UaX3b7OzwMIHdn5hGs4kUv4eLE-Er_6dxrZiPu6PJjBYB7eD2hyb-gxSCQ | ||
| ------END NATS USER JWT------ | ||
| ************************* IMPORTANT ************************* | ||
| NKEY Seed printed below can be used to sign and prove identity. | ||
| NKEYs are sensitive and should be treated as secrets. | ||
| -----BEGIN USER NKEY SEED----- | ||
| SUAMW6S2OXSKL2ETX5GJE3NDLWGXZFZ4JAP5WHBCK43RMFDPJCCJLPWC5Y | ||
| ------END USER NKEY SEED------ | ||
| ************************************************************* | ||
| `; | ||
|
|
||
| export default async function initNatsServer() { | ||
| logger.debug("initializing nats cocalc hub server"); | ||
| const nc = await connect({ | ||
| authenticator: credsAuthenticator(new TextEncoder().encode(creds)), | ||
| }); | ||
| const nc = await getConnection(); | ||
| logger.debug(`connected to ${nc.getServer()}`); | ||
| initAPI(nc); | ||
| } |