feat: add custom logger

Add setDefaultLogger func and change
@retryable decorator not to initialize logger
before first use of function
Also remove `pino-pretty` from examples package
due to defined declaration in `pino-pretty`
downgrade pino to make tests working on node 10.x.x
Addresses #191

examples/custom-logger/index.ts

@@ -0,0 +1,32 @@
+import {main} from '../utils';
+import {Logger, LogFn, Driver, getCredentialsFromEnv, setDefaultLogger} from 'ydb-sdk';
+
+const logFunction: LogFn = (obj: any, ...args: any[]) => {
+    console.log('Custom logging!', obj, ...args)
+};
+const MyLogger: Logger = {
+    fatal: logFunction,
+    error: logFunction,
+    warn: logFunction,
+    info: logFunction,
+    debug: logFunction,
+    trace: logFunction
+}
+
+setDefaultLogger(MyLogger)
+
+export async function run(logger: Logger, endpoint: string, database: string) {
+    logger.info('Driver initializing...');
+    const authService = getCredentialsFromEnv();
+    const driver = new Driver({endpoint, database, authService});
+    const timeout = 10000;
+    if (!await driver.ready(timeout)) {
+        logger.fatal(`Driver has not become ready in ${timeout}ms!`);
+        process.exit(1);
+    }
+    logger.info('Done');
+    driver.destroy()
+
+}
+
+main(run);

examples/package.json

@@ -19,7 +19,7 @@
   },
   "dependencies": {
     "yargs": "^16.1.0",
-    "ydb-sdk": "*"
+    "ydb-sdk": "file:.."
   },
   "devDependencies": {
     "@types/crc": "^3.4.0",
@@ -28,7 +28,6 @@
     "@types/yargs": "^15.0.9",
     "crc": "^3.8.0",
     "express": "^4.17.1",
-    "pino-pretty": "^9.1.1",
     "typescript": "^4.6.4"
   }
 }