Sync engine (#298)

Fixes #261
2023-01-13 15:41:29 +01:00
parent de6f531e91
commit a56e14bff1
51 changed files with 1033 additions and 1418 deletions
@@ -0,0 +1,97 @@
+import { Plug } from "../../plugos/plug.ts";
+import { System } from "../../plugos/system.ts";
+import { Hook, Manifest } from "../../plugos/types.ts";
+
+export type NamespaceOperation =
+  | "readFile"
+  | "writeFile"
+  | "listFiles"
+  | "getFileMeta"
+  | "deleteFile";
+
+export type PageNamespaceDef = {
+  pattern: string;
+  operation: NamespaceOperation;
+};
+
+export type PageNamespaceHookT = {
+  pageNamespace?: PageNamespaceDef;
+};
+
+type SpaceFunction = {
+  operation: NamespaceOperation;
+  pattern: RegExp;
+  plug: Plug<PageNamespaceHookT>;
+  name: string;
+  env?: string;
+};
+
+export class PageNamespaceHook implements Hook<PageNamespaceHookT> {
+  spaceFunctions: SpaceFunction[] = [];
+  constructor() {}
+
+  apply(system: System<PageNamespaceHookT>): void {
+    system.on({
+      plugLoaded: () => {
+        this.updateCache(system);
+      },
+      plugUnloaded: () => {
+        this.updateCache(system);
+      },
+    });
+  }
+
+  updateCache(system: System<PageNamespaceHookT>) {
+    this.spaceFunctions = [];
+    for (const plug of system.loadedPlugs.values()) {
+      if (plug.manifest?.functions) {
+        for (
+          const [funcName, funcDef] of Object.entries(
+            plug.manifest.functions,
+          )
+        ) {
+          if (funcDef.pageNamespace) {
+            this.spaceFunctions.push({
+              operation: funcDef.pageNamespace.operation,
+              pattern: new RegExp(funcDef.pageNamespace.pattern),
+              plug,
+              name: funcName,
+              env: funcDef.env,
+            });
+          }
+        }
+      }
+    }
+  }
+
+  validateManifest(manifest: Manifest<PageNamespaceHookT>): string[] {
+    const errors: string[] = [];
+    if (!manifest.functions) {
+      return [];
+    }
+    for (let [funcName, funcDef] of Object.entries(manifest.functions)) {
+      if (funcDef.pageNamespace) {
+        if (!funcDef.pageNamespace.pattern) {
+          errors.push(`Function ${funcName} has a namespace but no pattern`);
+        }
+        if (!funcDef.pageNamespace.operation) {
+          errors.push(`Function ${funcName} has a namespace but no operation`);
+        }
+        if (
+          ![
+            "readFile",
+            "writeFile",
+            "getFileMeta",
+            "listFiles",
+            "deleteFile",
+          ].includes(funcDef.pageNamespace.operation)
+        ) {
+          errors.push(
+            `Function ${funcName} has an invalid operation ${funcDef.pageNamespace.operation}`,
+          );
+        }
+      }
+    }
+    return errors;
+  }
+}