dominikriemer commented on code in PR #4186:
URL: https://github.com/apache/streampipes/pull/4186#discussion_r2841208234
##########
streampipes-service-core/src/main/java/org/apache/streampipes/service/core/migrations/AvailableMigrations.java:
##########
@@ -77,6 +78,7 @@ public List<Migration> getAvailableMigrations() {
new RemoveObsoletePrivilegesMigration(),
new UniqueDashboardIdMigration(),
new AddScriptTemplateViewMigration(),
+ new AddFunctionStateViewMigration(),
Review Comment:
The latest migration should be added to the end do avoid issues with
conflicting migrations
##########
streampipes-wrapper-standalone/src/main/java/org/apache/streampipes/wrapper/standalone/function/FunctionStateStore.java:
##########
@@ -0,0 +1,86 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package org.apache.streampipes.wrapper.standalone.function;
+
+import org.apache.streampipes.client.StreamPipesClient;
+import org.apache.streampipes.serializers.json.JacksonSerializer;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class FunctionStateStore<T> implements StateStore<T> {
+
+ private static final Logger LOG =
LoggerFactory.getLogger(FunctionStateStore.class);
+ private static final String STATE_PAYLOAD_KEY = "payload";
+
+ private final String functionId;
+ private final StreamPipesClient client;
+ private final Class<T> stateClass;
+ private final ObjectMapper objectMapper;
+ private Map<String, Object> persistedStatePayload;
+
+ public FunctionStateStore(String functionId,
+ StreamPipesClient client,
+ Class<T> stateClass) {
+ this.functionId = functionId;
+ this.client = client;
+ this.stateClass = stateClass;
+ this.objectMapper = JacksonSerializer.getObjectMapper();
+ }
+
+ @Override
+ public T load(T defaultState) {
+ try {
+ var functionState = client.adminApi().getFunctionState(functionId);
+ if (functionState.isPresent()) {
+ var persistedState = functionState.get();
+ if (persistedState.containsKey(STATE_PAYLOAD_KEY)) {
+ return
objectMapper.convertValue(persistedState.get(STATE_PAYLOAD_KEY), stateClass);
+ } else {
+ // Backward-compatible path for states stored before payload
wrapping was introduced.
+ return objectMapper.convertValue(persistedState, stateClass);
Review Comment:
why do we need backwards compatibility here?
##########
streampipes-model/src/main/java/org/apache/streampipes/model/function/FunctionState.java:
##########
@@ -0,0 +1,88 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package org.apache.streampipes.model.function;
+
+import org.apache.streampipes.commons.constants.GenericDocTypes;
+import org.apache.streampipes.model.shared.annotation.TsModel;
+import org.apache.streampipes.model.shared.api.Storable;
+
+import com.google.gson.annotations.SerializedName;
+
+import java.util.Map;
+
+@TsModel
Review Comment:
I think we don't need the TsModel annotation here
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