Refactor watchers

[pti/o2.git] / o2ims / service / watcher / base.py

diff --git a/o2ims/service/watcher/base.py b/o2ims/service/watcher/base.py
index 4ea23ff..45967de 100644 (file)
--- a/o2ims/service/watcher/base.py
+++ b/o2ims/service/watcher/base.py
@@ -14,55 +14,72 @@
 \r
 from o2ims.service.client.base_client import BaseClient\r
 from o2ims.domain.stx_object import StxGenericModel\r
-from o2ims.adapter.ocloud_repository import OcloudRepository\r
+from o2ims.service.unit_of_work import AbstractUnitOfWork\r
 \r
-\r
-class InvalidOcloudState(Exception):\r
-    pass\r
+import logging\r
+logger = logging.getLogger(__name__)\r
 \r
 \r
 class BaseWatcher(object):\r
-    def __init__(self, client: BaseClient) -> None:\r
+    def __init__(self, client: BaseClient,\r
+                 uow: AbstractUnitOfWork) -> None:\r
         super().__init__()\r
         self._client = client\r
+        self._uow = uow\r
 \r
-    def probe(self):\r
-        self._probe()\r
-\r
-    def _probe(self):\r
-        pass\r
+    def targetname(self) -> str:\r
+        return self._targetname()\r
 \r
+    def probe(self, parent: object = None):\r
+        return self._probe(parent)\r
 \r
-class OcloudWather(BaseWatcher):\r
-    def __init__(self, ocloud_client: BaseClient,\r
-                 repo: OcloudRepository) -> None:\r
-        super().__init__(ocloud_client)\r
-        self._repo = repo\r
+    def _probe(self, parent: object = None):\r
+        raise NotImplementedError\r
 \r
-    def _probe(self):\r
-        ocloudmodel = self._client.get(None)\r
-        if ocloudmodel:\r
-            self._compare_and_update(ocloudmodel)\r
+    def _targetname(self):\r
+        raise NotImplementedError\r
 \r
-    def _compare_and_update(self, ocloudmodel: StxGenericModel) -> bool:\r
-        # localmodel = self._repo.get(ocloudmodel.id)\r
-        oclouds = self._repo.list()\r
-        if len(oclouds) > 1:\r
-            raise InvalidOcloudState("More than 1 ocloud is found")\r
-        if len(oclouds) == 0:\r
-            self._repo.add(ocloudmodel)\r
-        else:\r
-            localmodel = oclouds.pop()\r
-            if localmodel.is_outdated(ocloudmodel):\r
-                localmodel.update_by(ocloudmodel)\r
-                self._repo.update(localmodel)\r
+    def _compare_and_update(self, newmodel: StxGenericModel) -> bool:\r
+        with self._uow:\r
+            # localmodel = self._uow.stxobjects.get(ocloudmodel.id)\r
+            localmodel = self._uow.stxobjects.get(str(newmodel.id))\r
+            if not localmodel:\r
+                logger.info("add entry:" + newmodel.name)\r
+                self._uow.stxobjects.add(newmodel)\r
+            elif localmodel.is_outdated(newmodel):\r
+                logger.info("update entry:" + newmodel.name)\r
+                localmodel.update_by(newmodel)\r
+                self._uow.stxobjects.update(localmodel)\r
+            self._uow.commit()\r
 \r
 \r
-class ResourcePoolWatcher(object):\r
-    def __init__(self) -> None:\r
+# node to organize watchers in tree hierachy\r
+class WatcherTree(object):\r
+    def __init__(self, watcher: BaseWatcher) -> None:\r
         super().__init__()\r
+        self.watcher = watcher\r
+        self.children = {}\r
 \r
+    def addchild(self, watcher: BaseWatcher) -> object:\r
+        child = WatcherTree(watcher)\r
+        self.children[watcher.targetname()] = child\r
+        return child\r
 \r
-class ResourceWatcher(object):\r
-    def __init__(self) -> None:\r
-        super().__init__()\r
+    def removechild(self, targetname: str) -> object:\r
+        return self.children.pop(targetname)\r
+\r
+    # probe all resources by parent, depth = 0 for indefinite recursive\r
+    def probe(self, parentresource=None, depth: int = 0):\r
+        logger.debug("probe resources with watcher: "\r
+                     + self.watcher.targetname())\r
+        childdepth = depth - 1 if depth > 0 else 0\r
+        resources = self.watcher.probe(parentresource)\r
+        logger.debug("probe returns " + str(len(resources)) + "resources")\r
+\r
+        if depth == 1:\r
+            # stop recursive\r
+            return\r
+\r
+        for res in resources:\r
+            for node in self.children:\r
+                node.probe(res, childdepth)\r