From 4bd88c9d1351f2d3a66f771a441b723cc324a6f1 Mon Sep 17 00:00:00 2001
From: Andriy Romanov <aromanov@diligent.com>
Date: Tue, 11 Jul 2023 15:26:38 -0700
Subject: [PATCH] feat: Add ability to set maxBuffer parameter for spawnSync
 while executing checkov

---
 README.md    | 4 ++++
 src/utils.ts | 3 ++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index f89c4ea..2a9bec1 100644
--- a/README.md
+++ b/README.md
@@ -89,3 +89,7 @@ new CheckovValidator({
     skipCheck: ['CKV_AWS_18', 'CKV_AWS_21'],
 });
 ```
+
+### Troubleshooting
+
+If you are getting `Error: spawnSync checkov ENOBUFS` error, please try to set `CHECKOV_MAX_BUFFER_SIZE_MB` environment variable to numeric value above 1. It's setting `maxBuffer` parameter for `spawnSync` [function](https://nodejs.org/api/child_process.html#child_processspawnsynccommand-args-options) under the hood.
diff --git a/src/utils.ts b/src/utils.ts
index cf05740..083719c 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -12,6 +12,7 @@ export function exec(commandLine: string[], options: { cwd?: string; json?: bool
       ...options.env,
     },
     cwd: options.cwd,
+    maxBuffer: 1024 * 1024 * (parseInt(process.env['CHECKOV_MAX_BUFFER_SIZE_MB']) || 1),
   });
 
   if (proc.error) { throw proc.error; }
@@ -37,4 +38,4 @@ export function exec(commandLine: string[], options: { cwd?: string; json?: bool
     console.error('Not JSON: ' + output);
     throw new Error('Command output is not JSON');
   }
-}
\ No newline at end of file
+}