no idea- added loki and other stuff to market-data-gateway, also added config lib

libs/config/src/data-providers.ts

@@ -0,0 +1,73 @@
+/**
+ * Data provider configurations for market data
+ */
+import { getEnvVar, validateConfig } from './core';
+import { dataProvidersConfigSchema, DataProvidersConfig, DataProviderConfig } from './types';
+
+/**
+ * Default data provider configurations
+ */
+const defaultDataProviders: DataProviderConfig[] = [
+  {
+    name: 'alpaca',
+    type: 'rest',
+    baseUrl: 'https://data.alpaca.markets/v1beta1',
+    apiKey: '',
+    apiSecret: '',
+    rateLimits: {
+      maxRequestsPerMinute: 200
+    }
+  },
+  {
+    name: 'polygon',
+    type: 'rest',
+    baseUrl: 'https://api.polygon.io/v2',
+    apiKey: '',
+    rateLimits: {
+      maxRequestsPerMinute: 5
+    }
+  },
+  {
+    name: 'alpaca-websocket',
+    type: 'websocket',
+    wsUrl: 'wss://stream.data.alpaca.markets/v2/iex',
+    apiKey: '',
+    apiSecret: ''
+  }
+];
+
+/**
+ * Load data provider configurations from environment variables
+ */
+export function loadDataProviderConfigs(): DataProvidersConfig {
+  // Get provider specific environment variables
+  const providers = defaultDataProviders.map(provider => {
+    const nameUpper = provider.name.toUpperCase().replace('-', '_');
+    
+    const updatedProvider: DataProviderConfig = {
+      ...provider,
+      apiKey: getEnvVar(`${nameUpper}_API_KEY`) || provider.apiKey || '',
+    };
+    
+    if (provider.apiSecret !== undefined) {
+      updatedProvider.apiSecret = getEnvVar(`${nameUpper}_API_SECRET`) || provider.apiSecret || '';
+    }
+    
+    return updatedProvider;
+  });
+
+  // Load default provider from environment
+  const defaultProvider = getEnvVar('DEFAULT_DATA_PROVIDER') || 'alpaca';
+
+  const config: DataProvidersConfig = {
+    providers,
+    defaultProvider
+  };
+
+  return validateConfig(config, dataProvidersConfigSchema);
+}
+
+/**
+ * Singleton data provider configurations
+ */
+export const dataProviderConfigs = loadDataProviderConfigs();