Support changing gRPC max message length

temporalio · May 11, 2021 · d1724fc · d1724fc
1 parent 4022469
commit d1724fc
Show file tree

Hide file tree

Showing 2 changed files with 6 additions and 0 deletions.
diff --git a/README.md b/README.md
@@ -26,6 +26,7 @@ Set these environment variables if you need to change their defaults
 | TEMPORAL_HOT_RELOAD_TEST_PORT | HTTP port used by hot reloading in tests                          | 8082                          |
 | TEMPORAL_SESSION_SECRET       | Secret used to hash the session with HMAC                         | "ensure secret in production" |
 | TEMPORAL_EXTERNAL_SCRIPTS     | Additional JavaScript tags to serve in the UI                     |                               |
+| TEMPORAL_GRPC_MAX_MESSAGE_LENGTH | gRPC max message length (bytes)                                | 4194304 (4mb)                 |
 
 <details>
 <summary>

diff --git a/server/temporal-client/temporal-client.js b/server/temporal-client/temporal-client.js
@@ -11,6 +11,9 @@ const {
   cliTransform,
 } = require('./helpers');
 
+const grpcMaxMsgLength =
+  Number(process.env.TEMPORAL_GRPC_MAX_MESSAGE_LENGTH) || 4 * 1024 * 1024;
+
 function TemporalClient() {
   const dir = process.cwd();
   const protoFileName = 'service.proto';
@@ -44,6 +47,8 @@ function TemporalClient() {
 
   const { credentials: tlsCreds, options: tlsOpts } = getCredentials();
 
+  tlsOpts['grpc.max_receive_message_length'] = grpcMaxMsgLength;
+
   let client = new service.temporal.api.workflowservice.v1.WorkflowService(
     process.env.TEMPORAL_GRPC_ENDPOINT || '127.0.0.1:7233',
     tlsCreds,