@energica-city/shared-amplify-utils
Version:
Shared utilities for AWS Amplify projects
78 lines • 11.2 kB
JavaScript
// queries/initialize.ts
import { Amplify } from 'aws-amplify';
import { ClientManager } from './ClientManager';
import { QueryFactory } from './QueryFactory';
import { logger } from '../log';
// Global state
let globalAmplifyOutputs = null;
let initializationPromise = null;
const queryFactories = new Map();
/**
* Initialize queries with schema and generate query factories automatically.
*
* @param config Configuration object
* @param config.amplifyOutputs The outputs from your Amplify backend
* @param config.schema The Amplify schema definition
* @param config.entities Optional array of entity names to initialize. If not provided, all entities will be initialized
* @param config.clientKey A unique key for the client instance, defaults to 'default'
*/
export async function initializeQueries(config) {
const { amplifyOutputs, schema, entities, clientKey = 'default' } = config;
// Initialize Amplify system once
if (!initializationPromise) {
initializationPromise = (async () => {
try {
logger.info('Configuring Amplify globally...');
Amplify.configure(amplifyOutputs);
globalAmplifyOutputs = amplifyOutputs;
const manager = ClientManager.getInstance(clientKey);
await manager.initialize();
logger.info('Amplify system initialized successfully', { clientKey });
}
catch (error) {
initializationPromise = null;
const errorMessage = error instanceof Error ? error.message : String(error);
logger.error('Failed to initialize Amplify system', {
error: errorMessage,
});
throw error;
}
})();
}
await initializationPromise;
// Get entity names to initialize - ensure they are strings
const schemaModelNames = Object.keys(schema.models || {}).filter((key) => typeof key === 'string');
const entitiesToInitialize = entities ?? schemaModelNames;
const queries = {};
// Generate query factories
for (const entityName of entitiesToInitialize) {
const entityKey = String(entityName);
if (queryFactories.has(entityKey)) {
queries[entityName] = queryFactories.get(entityKey);
continue;
}
try {
const queryFactory = await QueryFactory({
name: entityKey,
clientKey,
});
queryFactories.set(entityKey, queryFactory);
queries[entityName] = queryFactory;
}
catch (error) {
const errorMessage = error instanceof Error ? error.message : String(error);
throw new Error(`Failed to initialize entity "${entityKey}": ${errorMessage}`);
}
}
logger.info('Query factories initialized successfully', {
totalFactories: Object.keys(queries).length,
});
return queries;
}
/**
* Gets the global Amplify outputs
*/
export function getGlobalAmplifyOutputs() {
return globalAmplifyOutputs;
}
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If not provided, all entities will be initialized\n * @param config.clientKey A unique key for the client instance, defaults to 'default'\n */\nexport async function initializeQueries<\n  TSchema extends { models: Record<string, unknown> },\n  TTypes extends Record<string, AmplifyModelType>,\n>(config: {\n  amplifyOutputs: AmplifyOutputs;\n  schema: TSchema;\n  entities?: (keyof TTypes & string)[];\n  clientKey?: string;\n}): Promise<{\n  [K in keyof TTypes]: Awaited<\n    ReturnType<typeof QueryFactory<K & string, TTypes>>\n  >;\n}> {\n  const { amplifyOutputs, schema, entities, clientKey = 'default' } = config;\n\n  // Initialize Amplify system once\n  if (!initializationPromise) {\n    initializationPromise = (async () => {\n      try {\n        logger.info('Configuring Amplify globally...');\n        Amplify.configure(amplifyOutputs);\n        globalAmplifyOutputs = amplifyOutputs;\n\n        const manager = ClientManager.getInstance(clientKey);\n        await manager.initialize<TTypes>();\n\n        logger.info('Amplify system initialized successfully', { clientKey });\n      } catch (error) {\n        initializationPromise = null;\n        const errorMessage =\n          error instanceof Error ? error.message : String(error);\n        logger.error('Failed to initialize Amplify system', {\n          error: errorMessage,\n        });\n        throw error;\n      }\n    })();\n  }\n  await initializationPromise;\n\n  // Get entity names to initialize - ensure they are strings\n  const schemaModelNames = Object.keys(schema.models || {}).filter(\n    (key): key is string => typeof key === 'string',\n  );\n  const entitiesToInitialize = entities ?? schemaModelNames;\n\n  const queries: Record<string, unknown> = {};\n\n  // Generate query factories\n  for (const entityName of entitiesToInitialize) {\n    const entityKey = String(entityName);\n\n    if (queryFactories.has(entityKey)) {\n      queries[entityName] = queryFactories.get(entityKey);\n      continue;\n    }\n\n    try {\n      const queryFactory = await QueryFactory<string, TTypes>({\n        name: entityKey,\n        clientKey,\n      });\n\n      queryFactories.set(entityKey, queryFactory);\n      queries[entityName] = queryFactory;\n    } catch (error) {\n      const errorMessage =\n        error instanceof Error ? error.message : String(error);\n      throw new Error(\n        `Failed to initialize entity \"${entityKey}\": ${errorMessage}`,\n      );\n    }\n  }\n\n  logger.info('Query factories initialized successfully', {\n    totalFactories: Object.keys(queries).length,\n  });\n\n  return queries as {\n    [K in keyof TTypes]: Awaited<\n      ReturnType<typeof QueryFactory<K & string, TTypes>>\n    >;\n  };\n}\n\n/**\n * Gets the global Amplify outputs\n */\nexport function getGlobalAmplifyOutputs(): AmplifyOutputs | null {\n  return globalAmplifyOutputs;\n}\n"]}