From ec70018826024407c6af82a3b2fc03e8d4d5e6db Mon Sep 17 00:00:00 2001
From: Ziggy Jonsson <ziggy.jonsson.nyc@gmail.com>
Date: Tue, 13 Feb 2018 13:47:04 -0500
Subject: [PATCH] Expose a generic read method that can be extended to have
 more control over how the `readFn` is called, for example concurrency limits
 or combination of requests that are close in offsets

---
 lib/reader.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/reader.js b/lib/reader.js
index 43e78d9d..12d4c0da 100644
--- a/lib/reader.js
+++ b/lib/reader.js
@@ -201,11 +201,15 @@ class ParquetEnvelopeReader {
   }
 
   constructor(readFn, closeFn, fileSize) {
-    this.read = readFn;
+    this.readFn = readFn;
     this.close = closeFn;
     this.fileSize = fileSize;
   }
 
+  async read(offset, length) {
+    return this.readFn(offset, length);
+  }
+
   async readHeader() {
     let buf = await this.read(0, PARQUET_MAGIC.length);