Add boilerplate for update hook

libimagstorestdhook/src/vcs/git/update.rs

@@ -0,0 +1,54 @@
+use toml::Value;
+
+use libimagstore::storeid::StoreId;
+use libimagstore::hook::Hook;
+use libimagstore::hook::result::HookResult;
+use libimagstore::hook::position::HookPosition;
+use libimagstore::hook::accessor::{HookDataAccessor, HookDataAccessorProvider};
+use libimagstore::hook::accessor::StoreIdAccessor;
+
+#[derive(Debug)]
+pub struct UpdateHook {
+    position: HookPosition,
+    config: Option<Value>,
+}
+
+impl UpdateHook {
+
+    pub fn new(p: HookPosition) -> UpdateHook {
+        UpdateHook {
+            position: p,
+            config: None,
+        }
+    }
+
+}
+
+impl Hook for UpdateHook {
+
+    fn name(&self) -> &'static str {
+        "stdhook_git_update"
+    }
+
+    fn set_config(&mut self, config: &Value) {
+        self.config = Some(config.clone());
+    }
+
+}
+
+impl HookDataAccessorProvider for UpdateHook {
+
+    fn accessor(&self) -> HookDataAccessor {
+        HookDataAccessor::StoreIdAccess(self)
+    }
+}
+
+impl StoreIdAccessor for UpdateHook {
+
+    fn access(&self, id: &StoreId) -> HookResult<()> {
+        debug!("[GIT UPDATE HOOK]: {:?}", id);
+        Ok(())
+    }
+
+}
+