Merge pull request #906 from camspiers/fixes/ulimit-build-args

Fix, use "service.build.ulimits" when it is present instead of "service.ulimits"

podman_compose.py

@@ -441,8 +441,7 @@ def mount_desc_to_mount_args(compose, mount_desc, srv_name, cnt_name):  # pylint
     raise ValueError("unknown mount type:" + mount_type)
 
 
-def container_to_ulimit_args(cnt, podman_args):
-    ulimit = cnt.get("ulimits", [])
+def ulimit_to_ulimit_args(ulimit, podman_args):
     if ulimit is not None:
         # ulimit can be a single value, i.e. ulimit: host
         if is_str(ulimit):
@@ -458,6 +457,17 @@ def container_to_ulimit_args(cnt, podman_args):
                 podman_args.extend(["--ulimit", i])
 
 
+def container_to_ulimit_args(cnt, podman_args):
+    ulimit_to_ulimit_args(cnt.get("ulimits", []), podman_args)
+
+
+def container_to_ulimit_build_args(cnt, podman_args):
+    build = cnt.get("build", None)
+
+    if build is not None:
+        ulimit_to_ulimit_args(build.get("ulimits", []), podman_args)
+
+
 def mount_desc_to_volume_args(compose, mount_desc, srv_name, cnt_name):  # pylint: disable=unused-argument
     mount_type = mount_desc["type"]
     if mount_type not in ("bind", "volume"):
@@ -2220,7 +2230,7 @@ async def build_one(compose, args, cnt):
         build_args.extend(["-t", tag])
     if "target" in build_desc:
         build_args.extend(["--target", build_desc["target"]])
-    container_to_ulimit_args(cnt, build_args)
+    container_to_ulimit_build_args(cnt, build_args)
     if getattr(args, "no_cache", None):
         build_args.append("--no-cache")
     if getattr(args, "pull_always", None):

tests/test_podman_compose_build_ulimits.py

@@ -0,0 +1,93 @@
+# SPDX-License-Identifier: GPL-2.0
+
+
+"""Test how ulimits are applied in podman-compose build."""
+
+import os
+import subprocess
+import unittest
+
+from .test_podman_compose import podman_compose_path
+from .test_podman_compose import test_path
+
+
+def compose_yaml_path():
+    """ "Returns the path to the compose file used for this test module"""
+    return os.path.join(test_path(), "ulimit_build")
+
+
+class TestComposeBuildUlimits(unittest.TestCase):
+    def test_build_ulimits_ulimit1(self):
+        """podman build should receive and apply limits when building service ulimit1"""
+
+        cmd = (
+            "coverage",
+            "run",
+            podman_compose_path(),
+            "--verbose",
+            "-f",
+            os.path.join(compose_yaml_path(), "docker-compose.yaml"),
+            "build",
+            "--no-cache",
+            "ulimit1",
+        )
+        p = subprocess.run(
+            cmd, stdout=subprocess.PIPE, check=False, stderr=subprocess.STDOUT, text=True
+        )
+
+        self.assertEqual(p.returncode, 0)
+        self.assertIn("--ulimit nofile=1001", p.stdout)
+        self.assertIn("soft nofile limit: 1001", p.stdout)
+        self.assertIn("hard nofile limit: 1001", p.stdout)
+
+    def test_build_ulimits_ulimit2(self):
+        """podman build should receive and apply limits when building service ulimit2"""
+
+        cmd = (
+            "coverage",
+            "run",
+            podman_compose_path(),
+            "--verbose",
+            "-f",
+            os.path.join(compose_yaml_path(), "docker-compose.yaml"),
+            "build",
+            "--no-cache",
+            "ulimit2",
+        )
+        p = subprocess.run(
+            cmd, stdout=subprocess.PIPE, check=False, stderr=subprocess.STDOUT, text=True
+        )
+
+        self.assertEqual(p.returncode, 0)
+        self.assertIn("--ulimit nofile=1002", p.stdout)
+        self.assertIn("--ulimit nproc=1002:2002", p.stdout)
+        self.assertIn("soft process limit: 1002", p.stdout)
+        self.assertIn("hard process limit: 2002", p.stdout)
+        self.assertIn("soft nofile limit: 1002", p.stdout)
+        self.assertIn("hard nofile limit: 1002", p.stdout)
+
+    def test_build_ulimits_ulimit3(self):
+        """podman build should receive and apply limits when building service ulimit3"""
+
+        cmd = (
+            "coverage",
+            "run",
+            podman_compose_path(),
+            "--verbose",
+            "-f",
+            os.path.join(compose_yaml_path(), "docker-compose.yaml"),
+            "build",
+            "--no-cache",
+            "ulimit3",
+        )
+        p = subprocess.run(
+            cmd, stdout=subprocess.PIPE, check=False, stderr=subprocess.STDOUT, text=True
+        )
+
+        self.assertEqual(p.returncode, 0)
+        self.assertIn("--ulimit nofile=1003", p.stdout)
+        self.assertIn("--ulimit nproc=1003:2003", p.stdout)
+        self.assertIn("soft process limit: 1003", p.stdout)
+        self.assertIn("hard process limit: 2003", p.stdout)
+        self.assertIn("soft nofile limit: 1003", p.stdout)
+        self.assertIn("hard nofile limit: 1003", p.stdout)

tests/ulimit_build/Dockerfile

@@ -0,0 +1,5 @@
+FROM busybox
+
+COPY ./ulimit.sh /bin/ulimit.sh
+
+RUN /bin/ulimit.sh

tests/ulimit_build/docker-compose.yaml

@@ -0,0 +1,26 @@
+version: "3"
+services:
+  ulimit1:
+    image: ulimit_build_test
+    build:
+      context: ./
+      dockerfile: Dockerfile
+      ulimits: nofile=1001
+  ulimit2:
+    image: ulimit_build_test
+    build:
+      context: ./
+      dockerfile: Dockerfile
+      ulimits:
+        - nproc=1002:2002
+        - nofile=1002
+  ulimit3:
+    image: ulimit_build_test
+    build:
+      context: ./
+      dockerfile: Dockerfile
+      ulimits:
+        nofile: 1003
+        nproc:
+          soft: 1003
+          hard: 2003

tests/ulimit_build/ulimit.sh

@@ -0,0 +1,6 @@
+#!/bin/sh
+
+echo "soft process limit:" $(ulimit -S -u)
+echo "hard process limit:" $(ulimit -H -u)
+echo "soft nofile limit:" $(ulimit -S -n)
+echo "hard nofile limit:" $(ulimit -H -n)