import { ApplyUAResult } from 'app/common/ActiveDocAPI'; import { fromTableDataAction, TableColValues } from 'app/common/DocActions'; import * as gutil from 'app/common/gutil'; import { LocalPlugin } from 'app/common/plugin'; import { createRpcLogger, PluginInstance } from 'app/common/PluginInstance'; import { Promisified } from 'app/common/tpromisified'; import { ParseFileResult, ParseOptions } from 'app/plugin/FileParserAPI'; import { checkers, GristTable } from "app/plugin/grist-plugin-api"; import { GristDocAPI } from "app/plugin/GristAPI"; import { Storage } from 'app/plugin/StorageAPI'; import { ActiveDoc } from 'app/server/lib/ActiveDoc'; import { DocPluginData } from 'app/server/lib/DocPluginData'; import { makeExceptionalDocSession } from 'app/server/lib/DocSession'; import { FileParserElement } from 'app/server/lib/FileParserElement'; import { GristServer } from 'app/server/lib/GristServer'; import * as log from 'app/server/lib/log'; import { SafePythonComponent } from 'app/server/lib/SafePythonComponent'; import { UnsafeNodeComponent } from 'app/server/lib/UnsafeNodeComponent'; import { promisifyAll } from 'bluebird'; import * as fse from 'fs-extra'; import * as path from 'path'; import * as tmp from 'tmp'; promisifyAll(tmp); /** * Implements GristDocAPI interface. */ class GristDocAPIImpl implements GristDocAPI { constructor(private _activeDoc: ActiveDoc) { } public async getDocName() { return this._activeDoc.docName; } public async listTables(): Promise { const table = this._activeDoc.docData!.getMetaTable('_grist_Tables'); return table.getColValues('tableId') .filter(id => !id.startsWith("GristSummary_")).sort(); } public async fetchTable(tableId: string): Promise { return fromTableDataAction(await this._activeDoc.fetchTable( makeExceptionalDocSession('plugin'), tableId)); } public applyUserActions(actions: any[][]): Promise { return this._activeDoc.applyUserActions(makeExceptionalDocSession('plugin'), actions); } } /** * DocPluginManager manages plugins for a document. * * DocPluginManager instanciates asynchronously. Wait for the `ready` to resolve before using any * plugin. * */ export class DocPluginManager { public readonly plugins: { [s: string]: PluginInstance } = {}; public readonly ready: Promise; public readonly gristDocAPI: GristDocAPI; private _tmpDir: string; private _pluginInstances: PluginInstance[]; constructor( private _localPlugins: LocalPlugin[], private _appRoot: string, private _activeDoc: ActiveDoc, private _server: GristServer ) { this.gristDocAPI = new GristDocAPIImpl(_activeDoc); this._pluginInstances = []; this.ready = this._initialize(); } public tmpDir(): string { return this._tmpDir; } /** * To be moved in ActiveDoc.js as a new implementation for ActiveDoc.importFile. * Throws if no importers can parse the file. */ public async parseFile(filePath: string, fileName: string, parseOptions: ParseOptions): Promise { // Support an existing grist json format directly for files with a "jgrist" // extension. if (path.extname(fileName) === '.jgrist') { try { const result = JSON.parse(await fse.readFile(filePath, 'utf8')) as ParseFileResult; result.parseOptions = {}; // The parseOptions component isn't checked here, since it seems free-form. checkers.ParseFileResult.check(result); checkReferences(result.tables); return result; } catch (err) { throw new Error('Grist json format could not be parsed: ' + err); } } if (path.extname(fileName) === '.grist') { throw new Error(`To import a grist document use the "Import document" menu option on your home screen`); } const matchingFileParsers: FileParserElement[] = FileParserElement.getMatching(this._pluginInstances, fileName); if (!this._tmpDir) { throw new Error("DocPluginManager: initialization has not completed"); } // TODO: PluginManager shouldn't patch path here. Instead it should expose a method to create // dataSources, that would move the file to under _tmpDir and return an object with the relative // path. filePath = path.relative(this._tmpDir, filePath); log.debug(`parseFile: found ${matchingFileParsers.length} fileParser with matching file extensions`); const messages = []; for (const { plugin, parseFileStub } of matchingFileParsers) { const name = plugin.definition.id; try { log.info(`DocPluginManager.parseFile: calling to ${name} with ${filePath}`); const result = await parseFileStub.parseFile({ path: filePath, origName: fileName }, parseOptions); checkers.ParseFileResult.check(result); checkReferences(result.tables); return result; } catch (err) { const cleanerMessage = err.message.replace(/^\[Sandbox\] (Exception)?/, '').trim(); messages.push(cleanerMessage); log.warn(`DocPluginManager.parseFile: ${name} Failed parseFile `, err.message); continue; } } if (messages.length) { const extToType: Record = { '.xlsx' : 'Excel', '.xls' : 'Excel', '.json' : 'JSON', '.csv' : 'CSV', }; const fileType = extToType[path.extname(fileName)] || path.extname(fileName); throw new Error(`Failed to parse ${fileType} file. Error: ${messages.join("; ")}`); } throw new Error(`File format is not supported.`); } /** * Returns a list of plugins definitions. */ public getPlugins(): LocalPlugin[] { return this._localPlugins; } /** * Shut down all plugins for this document. */ public async shutdown(): Promise { const names = Object.keys(this.plugins); log.debug("DocPluginManager.shutdown cleaning up %s plugins", names.length); await Promise.all(names.map(name => this.plugins[name].shutdown())); if (this._tmpDir) { log.debug("DocPluginManager.shutdown removing tmpDir %s", this._tmpDir); await fse.remove(this._tmpDir); } } /** * Reload plugins: shutdown all plugins, clear list of plugins and load new ones. Returns a * promise that resolves when initialisation is done. */ public async reload(plugins: LocalPlugin[]): Promise { await this.shutdown(); this._pluginInstances = []; this._localPlugins = plugins; await this._initialize(); } public receiveAction(action: any[]): void { for (const plugin of this._pluginInstances) { const unsafeNode = plugin.unsafeNode as UnsafeNodeComponent; if (unsafeNode) { unsafeNode.receiveAction(action); } } } private async _initialize(): Promise { this._tmpDir = await tmp.dirAsync({ prefix: 'grist-tmp-', unsafeCleanup: true }); for (const plugin of this._localPlugins) { try { // todo: once Comm has been replaced by grain-rpc, pluginInstance.rpc should forward '*' to client const pluginInstance = new PluginInstance(plugin, createRpcLogger(log, `PLUGIN ${plugin.id}:`)); pluginInstance.rpc.registerForwarder('grist', pluginInstance.rpc, ''); pluginInstance.rpc.registerImpl("GristDocAPI", this.gristDocAPI, checkers.GristDocAPI); pluginInstance.rpc.registerImpl>("DocStorage", new DocPluginData(this._activeDoc.docStorage, plugin.id), checkers.Storage); const components = plugin.manifest.components; if (components) { const { safePython, unsafeNode } = components; if (safePython) { const comp = pluginInstance.safePython = new SafePythonComponent(plugin, this._tmpDir, this._activeDoc.docName, this._server); pluginInstance.rpc.registerForwarder(safePython, comp); } if (unsafeNode) { const gristDocPath = this._activeDoc.docStorage.docPath; const comp = pluginInstance.unsafeNode = new UnsafeNodeComponent(plugin, pluginInstance.rpc, unsafeNode, this._appRoot, gristDocPath); pluginInstance.rpc.registerForwarder(unsafeNode, comp); } } this._pluginInstances.push(pluginInstance); } catch (err) { log.info(`DocPluginInstance: failed to create instance ${plugin.id}: ${err.message}`); } } for (const instance of this._pluginInstances) { this.plugins[instance.definition.id] = instance; } } } /** * Checks that tables include all the tables referenced by tables columns. Throws an exception * otherwise. */ function checkReferences(tables: GristTable[]) { const tableIds = tables.map(table => table.table_name); for (const table of tables) { for (const col of table.column_metadata) { const refTableId = gutil.removePrefix(col.type, "Ref:"); if (refTableId && !tableIds.includes(refTableId)) { throw new Error(`Column type: ${col.type}, references an unknown table`); } } } }