Work on #508 (thin client)

2023-08-26 08:31:51 +02:00
parent 3af0f180cd
commit 9ee9008bf2
30 changed files with 717 additions and 327 deletions
@@ -0,0 +1,160 @@
+import { PlugNamespaceHook } from "../common/hooks/plug_namespace.ts";
+import { SilverBulletHooks } from "../common/manifest.ts";
+import { loadMarkdownExtensions } from "../common/markdown_parser/markdown_ext.ts";
+import buildMarkdown from "../common/markdown_parser/parser.ts";
+import { EventedSpacePrimitives } from "../common/spaces/evented_space_primitives.ts";
+import { FileMetaSpacePrimitives } from "../common/spaces/file_meta_space_primitives.ts";
+import { PlugSpacePrimitives } from "../common/spaces/plug_space_primitives.ts";
+import { createSandbox } from "../plugos/environments/webworker_sandbox.ts";
+import { CronHook } from "../plugos/hooks/cron.ts";
+import { EndpointHook } from "../plugos/hooks/endpoint.ts";
+import { EventHook } from "../plugos/hooks/event.ts";
+import { MQHook } from "../plugos/hooks/mq.ts";
+import { DenoKVStore } from "../plugos/lib/kv_store.deno_kv.ts";
+import { DexieMQ } from "../plugos/lib/mq.dexie.ts";
+import assetSyscalls from "../plugos/syscalls/asset.ts";
+import { eventSyscalls } from "../plugos/syscalls/event.ts";
+import { mqSyscalls } from "../plugos/syscalls/mq.dexie.ts";
+import { storeSyscalls } from "../plugos/syscalls/store.ts";
+import { System } from "../plugos/system.ts";
+import { Space } from "../web/space.ts";
+import { debugSyscalls } from "../web/syscalls/debug.ts";
+import { pageIndexSyscalls } from "../cli/syscalls/index.ts";
+import { markdownSyscalls } from "../web/syscalls/markdown.ts";
+import { spaceSyscalls } from "../cli/syscalls/space.ts";
+import { systemSyscalls } from "../web/syscalls/system.ts";
+import { yamlSyscalls } from "../web/syscalls/yaml.ts";
+import { Application, path } from "./deps.ts";
+import { sandboxFetchSyscalls } from "../plugos/syscalls/fetch.ts";
+import { shellSyscalls } from "../plugos/syscalls/shell.deno.ts";
+import { IDBKeyRange, indexedDB } from "https://esm.sh/fake-indexeddb@4.0.2";
+import { SpacePrimitives } from "../common/spaces/space_primitives.ts";
+
+export class ServerSystem {
+  system: System<SilverBulletHooks> = new System("server");
+  spacePrimitives!: SpacePrimitives;
+  requeueInterval?: number;
+  kvStore?: DenoKVStore;
+
+  constructor(
+    private baseSpacePrimitives: SpacePrimitives,
+    private dbPath: string,
+    private app: Application,
+  ) {
+  }
+
+  // Always needs to be invoked right after construction
+  async init() {
+    // Event hook
+    const eventHook = new EventHook();
+    this.system.addHook(eventHook);
+
+    // Cron hook
+    const cronHook = new CronHook(this.system);
+    this.system.addHook(cronHook);
+
+    this.kvStore = new DenoKVStore();
+    await this.kvStore.init(this.dbPath);
+
+    // Endpoint hook
+    this.system.addHook(new EndpointHook(this.app, "/_/"));
+
+    // Use DexieMQ for this, in memory
+    const mq = new DexieMQ("mq", indexedDB, IDBKeyRange);
+
+    this.requeueInterval = setInterval(() => {
+      // Timeout after 5s, retries 3 times, otherwise drops the message (no DLQ)
+      mq.requeueTimeouts(5000, 3, true).catch(console.error);
+    }, 20000); // Look to requeue every 20s
+
+    const pageIndexCalls = pageIndexSyscalls(this.kvStore);
+
+    const plugNamespaceHook = new PlugNamespaceHook();
+    this.system.addHook(plugNamespaceHook);
+
+    this.system.addHook(new MQHook(this.system, mq));
+
+    this.spacePrimitives = new FileMetaSpacePrimitives(
+      new EventedSpacePrimitives(
+        new PlugSpacePrimitives(
+          this.baseSpacePrimitives,
+          plugNamespaceHook,
+        ),
+        eventHook,
+      ),
+      pageIndexCalls,
+    );
+    const space = new Space(this.spacePrimitives, this.kvStore);
+
+    // Add syscalls
+    this.system.registerSyscalls(
+      [],
+      eventSyscalls(eventHook),
+      spaceSyscalls(space),
+      assetSyscalls(this.system),
+      yamlSyscalls(),
+      storeSyscalls(this.kvStore),
+      systemSyscalls(undefined as any, this.system),
+      mqSyscalls(mq),
+      pageIndexCalls,
+      debugSyscalls(),
+      markdownSyscalls(buildMarkdown([])), // Will later be replaced with markdown extensions
+    );
+
+    // Syscalls that require some additional permissions
+    this.system.registerSyscalls(
+      ["fetch"],
+      sandboxFetchSyscalls(),
+    );
+
+    this.system.registerSyscalls(
+      ["shell"],
+      shellSyscalls("."),
+    );
+
+    await this.loadPlugs();
+
+    // for (let plugPath of await space.listPlugs()) {
+    //   plugPath = path.resolve(this.spacePath, plugPath);
+    //   await this.system.load(
+    //     new URL(`file://${plugPath}`),
+    //     createSandbox,
+    //   );
+    // }
+
+    // Load markdown syscalls based on all new syntax (if any)
+    this.system.registerSyscalls(
+      [],
+      markdownSyscalls(buildMarkdown(loadMarkdownExtensions(this.system))),
+    );
+  }
+
+  async loadPlugs() {
+    const tempDir = await Deno.makeTempDir();
+    try {
+      for (const { name } of await this.spacePrimitives.fetchFileList()) {
+        if (
+          name.endsWith(".plug.js") // && !filePath.includes("search.plug.js")
+        ) {
+          const plugPath = path.join(tempDir, name);
+          await Deno.mkdir(path.dirname(plugPath), { recursive: true });
+          await Deno.writeFile(
+            plugPath,
+            (await this.spacePrimitives.readFile(name)).data,
+          );
+          await this.system.load(
+            new URL(`file://${plugPath}`),
+            createSandbox,
+          );
+        }
+      }
+    } finally {
+      await Deno.remove(tempDir, { recursive: true });
+    }
+  }
+
+  async close() {
+    clearInterval(this.requeueInterval);
+    await this.system.unloadAll();
+  }
+}