Started implementing focker compose

compose.py

@@ -0,0 +1,56 @@
+import os
+import yaml
+from .zfs import AmbiguousValueError, \
+    zfs_find, \
+    zfs_tag
+from .misc import random_sha256_hexdigest, \
+    find_prefix
+import subprocess
+
+
+def build_volumes(spec):
+    for tag in spec.keys():
+        try:
+            name, _ = zfs_find(tag, focker_type='volume')
+            continue
+        except AmbiguousValueError:
+            raise
+        except ValueError:
+            pass
+        sha256 = random_sha256_hexdigest()
+        name = find_prefix(poolname + '/focker/volumes/', sha256)
+        subprocess.check_output(['zfs', 'create', name])
+        zfs_untag([ tag ], focker_type='volume')
+        zfs_tag(name, [ tag ])
+
+
+def build_images(spec, path):
+    # print('build_images(): NotImplementedError')
+    for (tag, focker_dir) in spec.items():
+        res = subprocess.run(['focker', 'image', 'build',
+            os.path.join(path, focker_dir), '-t', tag])
+        if res.returncode != 0:
+            raise RuntimeError('Image build failed: ' + str(res.returncode))
+
+
+def build_jails(spec):
+    print('build_jails(): NotImplementedError')
+
+
+def command_compose_build(args):
+    if not os.path.exists(args.filename):
+        raise ValueError('File not found: ' + args.filename)
+    path, _ = os.path.split(args.filename)
+    with open(args.filename, 'r') as f:
+        spec = yaml.safe_load(f)
+    if 'volumes' in spec:
+        build_volumes(spec['volumes'])
+    if 'images' in spec:
+        build_images(spec['images'], path)
+    if 'jails' in spec:
+        build_jails(spec['jails'])
+
+
+
+def command_compose_run(args):
+    raise NotImplementedError

focker-compose.yml

@@ -4,6 +4,9 @@
 # focker compose wordpress.yml restore
 #
 
+images:
+  wordpress-5: .
+
 jails:
   wordpress:
     image: wordpress-5