Music XML

modulus.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 import json
+import hashlib
 import os
 import pathlib
 import shlex
@@ -136,6 +137,9 @@ RUN python -m pip install --no-cache-dir conan=={CONAN_VERSION}
 WORKDIR /workspace
 """
 
+def build_requirements_digest():
+  return hashlib.sha256((repo_root() / "tools/requirements.txt").read_bytes()).hexdigest()
+
 def product_build_dockerfile():
   return f"""FROM {DEFAULT_BUILD_BASE_IMAGE}
 
@@ -202,6 +206,8 @@ COPY tools/requirements.txt /tmp/vamp-build-requirements.txt
 RUN python -m pip install --no-cache-dir \\
     conan=={CONAN_VERSION} -r /tmp/vamp-build-requirements.txt
 
+LABEL org.khodo.product-vamp.build-requirements="{build_requirements_digest()}"
+
 WORKDIR /workspace
 
 RUN mkdir -p /opt && touch /opt/modulus-build-image
@@ -482,6 +488,19 @@ def delegate(command, argv):
   ensure_runtime(root)
   sys.path.insert(0, str(root / RUNTIME_DIR))
   import modulus.cli
+  original_image_available = modulus.cli.docker_image_available
+
+  def current_build_image(context):
+    if not original_image_available(context):
+      return False
+    inspected = subprocess.run(
+      ["docker", "image", "inspect", context.docker_image, "--format",
+       '{{index .Config.Labels "org.khodo.product-vamp.build-requirements"}}'],
+      capture_output=True, text=True, check=False,
+    )
+    return inspected.returncode == 0 and inspected.stdout.strip() == build_requirements_digest()
+
+  modulus.cli.docker_image_available = current_build_image
   original_docker_run = modulus.cli.docker_run
 
   def docker_run_with_host_socket(context, command, docker_args=None, env_overrides=None):
@@ -502,6 +521,8 @@ def delegate(command, argv):
   try:
     return modulus.cli.main(command)
   finally:
+    modulus.cli.docker_image_available = original_image_available
+    modulus.cli.docker_run = original_docker_run
     os.chdir(previous_cwd)
     sys.argv = previous_argv