Merge branch '103_algorithm_database_sharing' into 'master'

Algorithm database sharing

Closes #103

See merge request !128

beat/core/execution/docker.py

@@ -384,6 +384,15 @@ class DockerExecutor(RemoteExecutor):
             file_path = result["path"]
             __add_writable_volume(file_path)
 
+    def __share_databases(self, algorithm_container, db_infos):
+        """Add volumes to the algorithm container for the datasets"""
+
+        for database_name, database in self.databases.items():
+            db_data = database.data
+            algorithm_container.add_volume(
+                db_data["root_folder"], os.path.join("/databases", database_name)
+            )
+
     def process(
         self, virtual_memory_in_megabytes=0, max_cpu_percent=0, timeout_in_minutes=0
     ):
@@ -472,6 +481,8 @@ class DockerExecutor(RemoteExecutor):
         network_name = self.data.pop("network_name", "bridge")
         databases_infos = {}
 
+        share_databases = self.data.pop("share_databases", False)
+
         if len(self.databases) > 0:
             databases_infos["db"] = self.__create_db_container(
                 datasets_uid, network_name
@@ -526,6 +537,9 @@ class DockerExecutor(RemoteExecutor):
                 loop_algorithm_container, volume_cache_mount_point, self.data["loop"]
             )
 
+            if share_databases:
+                self.__share_databases(loop_algorithm_container, databases_infos)
+
             # Start the container
             self.host.start(
                 loop_algorithm_container,
@@ -570,6 +584,9 @@ class DockerExecutor(RemoteExecutor):
             algorithm_container, volume_cache_mount_point, self.data
         )
 
+        if share_databases:
+            self.__share_databases(algorithm_container, databases_infos)
+
         # Start the container
         self.host.start(
             algorithm_container,

beat/core/test/__init__.py

@@ -35,6 +35,7 @@
 
 # Basic setup for slow tests
 
+import json
 import logging
 import os
 import shutil
@@ -84,14 +85,42 @@ if VERBOSE_TEST_LOGGING:
         logger.addHandler(handler)
 
 
+def sync_prefixes(source_prefixes, target_prefix):
+    for path in source_prefixes:
+        sp.check_call(["rsync", "-arz", path, target_prefix])
+
+
+def initialize_db_root_folder(database_root_folder, databases_path):
+    os.makedirs(database_root_folder, exist_ok=True)
+
+    for root, dirs, files in os.walk(databases_path, topdown=False):
+        for file_ in files:
+            if file_.endswith(".json"):
+                path = os.path.join(root, file_)
+                try:
+                    with open(path, "rt") as db_file:
+                        declaration = json.load(db_file)
+                except json.JSONDecodeError:
+                    # some are explicitly invalid.
+                    continue
+                else:
+                    declaration["root_folder"] = database_root_folder
+                    with open(path, "wt") as db_file:
+                        json.dump(declaration, db_file, indent=4)
+
+
 def setup_package():
-    prefixes = [
-        pkg_resources.resource_filename("beat.backend.python.test", "prefix"),
-        pkg_resources.resource_filename("beat.core.test", "prefix"),
-    ]
+    sync_prefixes(
+        [
+            pkg_resources.resource_filename("beat.backend.python.test", "prefix"),
+            pkg_resources.resource_filename("beat.core.test", "prefix"),
+        ],
+        prefix_folder,
+    )
 
-    for path in prefixes:
-        sp.check_call(["rsync", "-arz", path, prefix_folder])
+    initialize_db_root_folder(
+        os.path.join(prefix_folder, "beat_core_test"), os.path.join(prefix, "databases")
+    )
 
     if DOCKER_NETWORK_TEST_ENABLED:
         import docker

beat/core/test/prefix/algorithms/user/shared_datasets/1.json

+{
+    "schema_version": 2,
+    "language": "python",
+    "api_version": 2,
+    "type": "autonomous",
+    "splittable": false,
+    "parameters": {
+        "sync": {
+            "default": "in1",
+            "type": "string"
+        }
+    },
+    "groups": [
+        {
+            "inputs": {
+                "in1": {
+                    "type": "user/single_integer/1"
+                },
+                "in2": {
+                    "type": "user/single_integer/1"
+                }
+            },
+            "outputs": {
+                "out": {
+                    "type": "user/single_integer/1"
+                }
+            }
+        }
+    ]
+}

beat/core/test/prefix/algorithms/user/shared_datasets/1.py

+# vim: set fileencoding=utf-8 :
+
+###################################################################################
+#                                                                                 #
+# Copyright (c) 2020 Idiap Research Institute, http://www.idiap.ch/               #
+# Contact: beat.support@idiap.ch                                                  #
+#                                                                                 #
+# Redistribution and use in source and binary forms, with or without              #
+# modification, are permitted provided that the following conditions are met:     #
+#                                                                                 #
+# 1. Redistributions of source code must retain the above copyright notice, this  #
+# list of conditions and the following disclaimer.                                #
+#                                                                                 #
+# 2. Redistributions in binary form must reproduce the above copyright notice,    #
+# this list of conditions and the following disclaimer in the documentation       #
+# and/or other materials provided with the distribution.                          #
+#                                                                                 #
+# 3. Neither the name of the copyright holder nor the names of its contributors   #
+# may be used to endorse or promote products derived from this software without   #
+# specific prior written permission.                                              #
+#                                                                                 #
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND #
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED   #
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE          #
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE    #
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL      #
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR      #
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER      #
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,   #
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE   #
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.            #
+#                                                                                 #
+###################################################################################
+import os
+
+import numpy
+
+
+class Algorithm:
+    def __init__(self):
+        self.offset = 1
+
+    def setup(self, parameters):
+        self.sync = parameters["sync"]
+        return True
+
+    def process(self, data_loaders, outputs):
+        data_loader = data_loaders.loaderOf("in1")
+        print(os.listdir("/databases/integers_db/1"))
+        with open("/databases/integers_db/1/datafile.txt", "rt") as shared_data:
+            value = shared_data.read()
+            shared_offset = int(value)
+
+        for i in range(data_loader.count(self.sync)):
+            view = data_loader.view(self.sync, i)
+
+            (data, start, end) = view[view.count() - 1]
+
+            value = numpy.int32(data["in1"].value + data["in2"].value + shared_offset)
+
+            outputs["out"].write({"value": value}, end)
+
+        return True

beat/core/test/prefix/databases/empty_protocol_sets/1.json

 {
-    "root_folder": "/tmp/path/not/set",
+    "root_folder": "/tmp/beat_core_test",
     "protocols": [
         {
             "name": "double",

beat/core/test/prefix/databases/empty_protocols/1.json

 {
-    "root_folder": "/tmp/path/not/set",
+    "root_folder": "/tmp/beat_core_test",
     "protocols": [
     ]
 }

beat/core/test/prefix/databases/empty_set_outputs/1.json

 {
-    "root_folder": "/tmp/path/not/set",
+    "root_folder": "/tmp/beat_core_test",
     "protocols": [
         {
             "name": "double",

beat/core/test/prefix/databases/integers_db_invalid_env/1.json

 {
-    "root_folder": "/tmp/path/not/set",
+    "root_folder": "/tmp/beat_core_test",
     "environment": {
         "name": "Does not exist",
         "version": "1.4.0"

beat/core/test/prefix/databases/integers_db_invalid_env/2.json

@@ -4,7 +4,7 @@
         "name": "Does not exist",
         "version": "1.4.0"
     },
-    "root_folder": "/tmp/path/not/set",
+    "root_folder": "/tmp/beat_core_test",
     "protocols": [
         {
             "name": "double",

beat/core/test/prefix/databases/large/1.json

 {
-    "root_folder": "/tmp/path/not/set",
+    "root_folder": "/tmp/beat_core_test",
     "protocols": [
         {
             "name": "large",

beat/core/test/prefix/databases/large/2.json

 {
-    "root_folder": "/tmp/path/not/set",
+    "root_folder": "/tmp/beat_core_test",
     "protocols": [
         {
             "name": "large",

beat/core/test/prefix/databases/missing_protocol_name/1.json

 {
-    "root_folder": "/tmp/path/not/set",
+    "root_folder": "/tmp/beat_core_test",
     "protocols": [
         {
             "sets": [

beat/core/test/prefix/databases/missing_protocols/1.json

 {
-    "root_folder": "/tmp/path/not/set"
+    "root_folder": "/tmp/beat_core_test"
 }

beat/core/test/prefix/databases/missing_set_name/1.json

 {
-    "root_folder": "/tmp/path/not/set",
+    "root_folder": "/tmp/beat_core_test",
     "protocols": [
         {
             "name": "double",

beat/core/test/prefix/databases/missing_set_outputs/1.json

 {
-    "root_folder": "/tmp/path/not/set",
+    "root_folder": "/tmp/beat_core_test",
     "protocols": [
         {
             "name": "double",

beat/core/test/prefix/databases/missing_set_view/1.json

 {
-    "root_folder": "/tmp/path/not/set",
+    "root_folder": "/tmp/beat_core_test",
     "protocols": [
         {
             "name": "double",

beat/core/test/prefix/databases/mixed_protocol_names/1.json

 {
-    "root_folder": "/tmp/path/not/set",
+    "root_folder": "/tmp/beat_core_test",
     "protocols": [
         {
             "name": "protocol",

beat/core/test/prefix/databases/mixed_set_names/1.json

 {
-    "root_folder": "/tmp/path/not/set",
+    "root_folder": "/tmp/beat_core_test",
     "protocols": [
         {
             "name": "double",

beat/core/test/prefix/databases/same_protocol_names/1.json

 {
-    "root_folder": "/tmp/path/not/set",
+    "root_folder": "/tmp/beat_core_test",
     "protocols": [
         {
             "name": "double",

beat/core/test/prefix/databases/same_set_names/1.json

 {
-    "root_folder": "/tmp/path/not/set",
+    "root_folder": "/tmp/beat_core_test",
     "protocols": [
         {
             "name": "double",