From c812b4d3f7c8276fbf9ceb13ae01da4fb5afae01 Mon Sep 17 00:00:00 2001
From: fumoboy007 <2100868+fumoboy007@users.noreply.github.com>
Date: Mon, 9 Sep 2024 15:43:49 -0700
Subject: [PATCH] Disable Python buffering of standard output/error streams.

The code uses `print` to log messages, so disable buffering to output the messages as soon as they are written.

Fixes #437.
---
 Dockerfile                   | 4 ++++
 Dockerfile.metadata_service  | 7 ++++++-
 Dockerfile.migration_service | 7 ++++++-
 Dockerfile.ui_service        | 4 ++++
 4 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index bce8be6a..c4e1b942 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -46,5 +46,9 @@ RUN /root/services/ui_backend_service/download_ui.sh
 ADD services/migration_service /root/services/migration_service
 RUN pip3 install -r /root/services/migration_service/requirements.txt
 
+# The program uses `print` to log messages, so disable buffering to output the messages as soon as
+# they are written.
+ENV PYTHONUNBUFFERED=1
+
 RUN chmod 777 /root/services/migration_service/run_script.py
 CMD python3  services/migration_service/run_script.py
diff --git a/Dockerfile.metadata_service b/Dockerfile.metadata_service
index 8406c36d..be0a6ac7 100644
--- a/Dockerfile.metadata_service
+++ b/Dockerfile.metadata_service
@@ -10,4 +10,9 @@ ADD services/metadata_service /root/services/metadata_service
 ADD setup.py setup.cfg /root/
 WORKDIR /root
 RUN pip install --editable .
-CMD metadata_service
\ No newline at end of file
+
+# The program uses `print` to log messages, so disable buffering to output the messages as soon as
+# they are written.
+ENV PYTHONUNBUFFERED=1
+
+CMD metadata_service
diff --git a/Dockerfile.migration_service b/Dockerfile.migration_service
index 948d4fe4..208946e4 100644
--- a/Dockerfile.migration_service
+++ b/Dockerfile.migration_service
@@ -13,4 +13,9 @@ ADD services/migration_service /root/services/migration_service
 ADD setup.py setup.cfg run_goose.py /root/
 WORKDIR /root
 RUN pip install --editable .
-CMD migration_service
\ No newline at end of file
+
+# The program uses `print` to log messages, so disable buffering to output the messages as soon as
+# they are written.
+ENV PYTHONUNBUFFERED=1
+
+CMD migration_service
diff --git a/Dockerfile.ui_service b/Dockerfile.ui_service
index 3a78898c..0164268d 100644
--- a/Dockerfile.ui_service
+++ b/Dockerfile.ui_service
@@ -32,4 +32,8 @@ RUN /root/services/ui_backend_service/download_ui.sh
 
 RUN pip install --editable .
 
+# The program uses `print` to log messages, so disable buffering to output the messages as soon as
+# they are written.
+ENV PYTHONUNBUFFERED=1
+
 CMD ui_backend_service