112 lines
3.9 KiB
TypeScript
112 lines
3.9 KiB
TypeScript
import * as fs from "node:fs/promises";
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import * as os from "node:os";
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import { logger } from "@zerobyte/core/node";
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import { toMessage } from "@zerobyte/core/utils";
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import { OPERATION_TIMEOUT } from "../constants";
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import { withTimeout } from "../timeout";
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import { getMountForPath } from "../fs";
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import type { BackendConfig, VolumeBackend } from "../types";
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import { assertMounted, executeMount, executeUnmount } from "./utils";
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const checkHealth = async (mountPath: string) => {
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const run = async () => {
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await assertMounted(mountPath, (fstype) => fstype.startsWith("nfs"));
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logger.debug(`NFS volume at ${mountPath} is healthy and mounted.`);
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return { status: "mounted" as const };
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};
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try {
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return await withTimeout(run(), OPERATION_TIMEOUT, "NFS health check");
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} catch (error) {
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const message = toMessage(error);
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if (message !== "Volume is not mounted") {
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logger.error("NFS volume health check failed:", message);
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}
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return { status: "error" as const, error: message };
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}
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};
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const unmount = async (mountPath: string) => {
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if (os.platform() !== "linux") {
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logger.error("NFS unmounting is only supported on Linux hosts.");
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return { status: "error" as const, error: "NFS unmounting is only supported on Linux hosts." };
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}
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const run = async () => {
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const mount = await getMountForPath(mountPath);
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if (!mount || mount.mountPoint !== mountPath) {
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logger.debug(`Path ${mountPath} is not a mount point. Skipping unmount.`);
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return { status: "unmounted" as const };
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}
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await executeUnmount(mountPath);
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await fs.rmdir(mountPath).catch(() => {});
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logger.info(`NFS volume at ${mountPath} unmounted successfully.`);
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return { status: "unmounted" as const };
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};
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try {
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return await withTimeout(run(), OPERATION_TIMEOUT, "NFS unmount");
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} catch (error) {
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logger.error("Error unmounting NFS volume", { mountPath, error: toMessage(error) });
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return { status: "error" as const, error: toMessage(error) };
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}
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};
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const mount = async (config: BackendConfig, mountPath: string) => {
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logger.debug(`Mounting volume ${mountPath}...`);
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if (config.backend !== "nfs") {
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logger.error("Provided config is not for NFS backend");
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return { status: "error" as const, error: "Provided config is not for NFS backend" };
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}
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if (os.platform() !== "linux") {
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logger.error("NFS mounting is only supported on Linux hosts.");
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return { status: "error" as const, error: "NFS mounting is only supported on Linux hosts." };
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}
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const { status } = await checkHealth(mountPath);
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if (status === "mounted") return { status: "mounted" as const };
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if (status === "error") {
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logger.debug(`Trying to unmount any existing mounts at ${mountPath} before mounting...`);
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await unmount(mountPath);
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}
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const run = async () => {
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await fs.mkdir(mountPath, { recursive: true });
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const options = [`vers=${config.version}`, `port=${config.port}`];
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if (config.version === "3") options.push("nolock");
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if (config.readOnly) options.push("ro");
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const args = ["-t", "nfs", "-o", options.join(","), `${config.server}:${config.exportPath}`, mountPath];
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logger.debug(`Mounting volume ${mountPath}...`);
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logger.info(`Executing mount: mount ${args.join(" ")}`);
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try {
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await executeMount(args);
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} catch (error) {
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logger.warn(`Initial NFS mount failed, retrying with -i flag: ${toMessage(error)}`);
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await executeMount(["-i", ...args]);
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}
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logger.info(`NFS volume at ${mountPath} mounted successfully.`);
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return { status: "mounted" as const };
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};
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try {
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return await withTimeout(run(), OPERATION_TIMEOUT, "NFS mount");
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} catch (error) {
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logger.error("Error mounting NFS volume", { error: toMessage(error) });
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return { status: "error" as const, error: toMessage(error) };
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}
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};
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export const makeNfsBackend = (config: BackendConfig, mountPath: string): VolumeBackend => ({
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mount: () => mount(config, mountPath),
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unmount: () => unmount(mountPath),
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checkHealth: () => checkHealth(mountPath),
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});
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