Add coder cloud expose command

src/node/coder-cloud.ts

@@ -0,0 +1,30 @@
+import { spawn } from "child_process"
+import path from "path"
+import { logger } from "@coder/logger"
+import split2 from "split2"
+
+export async function coderCloudExpose(serverName: string): Promise<void> {
+  const coderCloudAgent = path.resolve(__dirname, "../../lib/coder-cloud-agent")
+  const agent = spawn(coderCloudAgent, ["link", serverName], {
+    stdio: ["inherit", "inherit", "pipe"],
+  })
+
+  agent.stderr.pipe(split2()).on("data", line => {
+    line = line.replace(/^[0-9-]+ [0-9:]+ [^ ]+\t/, "")
+    logger.info(line)
+  })
+
+  return new Promise((res, rej) => {
+    agent.on("error", rej)
+
+    agent.on("close", code => {
+      if (code !== 0) {
+        rej({
+          message: `coder cloud agent exited with ${code}`,
+        })
+        return
+      }
+      res()
+    })
+  })
+}