ibessonov commented on a change in pull request #41:
URL: https://github.com/apache/ignite-3/pull/41#discussion_r568481713
##########
File path:
modules/configuration-annotation-processor/src/test/java/org/apache/ignite/configuration/sample/configuration/ConfigurationStorageTest.java
##########
@@ -0,0 +1,208 @@
+package org.apache.ignite.configuration.sample.configuration;
+
+import java.io.Serializable;
+import java.util.Collections;
+import java.util.Map;
+import org.apache.ignite.configuration.ConfigurationChanger;
+import org.apache.ignite.configuration.Configurator;
+import org.apache.ignite.configuration.RootKey;
+import org.apache.ignite.configuration.annotation.Config;
+import org.apache.ignite.configuration.annotation.ConfigValue;
+import org.apache.ignite.configuration.annotation.NamedConfigValue;
+import org.apache.ignite.configuration.annotation.Value;
+import org.apache.ignite.configuration.sample.configuration.impl.ANode;
+import org.apache.ignite.configuration.storage.Data;
+import
org.apache.ignite.configuration.validation.ConfigurationValidationException;
+import org.apache.ignite.configuration.validation.ValidationIssue;
+import org.hamcrest.collection.IsMapContaining;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+class ConfigurationStorageTest {
+
+ private static final RootKey<?> KEY = () -> "key";
+ /** */
+ @Config
+ public static class AConfigurationSchema {
+ /** */
+ @ConfigValue
+ private BConfigurationSchema child;
+
+ /** */
+ @NamedConfigValue
+ private CConfigurationSchema elements;
+ }
+
+ /** */
+ @Config
+ public static class BConfigurationSchema {
+ /** */
+ @Value(immutable = true)
+ private int intCfg;
+
+ /** */
+ @Value
+ private String strCfg;
+ }
+
+ /** */
+ @Config
+ public static class CConfigurationSchema {
+ /** */
+ @Value
+ private String strCfg;
+ }
+
+ @Test
+ public void testPutGet() {
+ final TestConfigurationStorage storage = new
TestConfigurationStorage();
+
+ final DynamicConfigurationController con = new
DynamicConfigurationController();
+ final Configurator<?> configuration = con.getConfiguration();
+
+ ANode data = new ANode()
+ .initChild(init -> init.initIntCfg(1).initStrCfg("1"))
+ .initElements(change -> change.put("a", init ->
init.initStrCfg("1")));
+
+ final ConfigurationChanger changer = new ConfigurationChanger(storage);
+ changer.init();
+
+ changer.registerConfiguration(KEY, configuration);
+
+ changer.change(Collections.singletonMap(KEY, data));
+
+ final Data dataFromStorage = storage.readAll();
+ final Map<String, Serializable> dataMap = dataFromStorage.values();
+
+ assertEquals(3, dataMap.size());
+ assertThat(dataMap, IsMapContaining.hasEntry("key.child.intCfg", 1));
Review comment:
I think we should use static imports for matchers
##########
File path:
modules/configuration-annotation-processor/src/test/java/org/apache/ignite/configuration/sample/configuration/ConfigurationStorageTest.java
##########
@@ -0,0 +1,208 @@
+package org.apache.ignite.configuration.sample.configuration;
+
+import java.io.Serializable;
+import java.util.Collections;
+import java.util.Map;
+import org.apache.ignite.configuration.ConfigurationChanger;
+import org.apache.ignite.configuration.Configurator;
+import org.apache.ignite.configuration.RootKey;
+import org.apache.ignite.configuration.annotation.Config;
+import org.apache.ignite.configuration.annotation.ConfigValue;
+import org.apache.ignite.configuration.annotation.NamedConfigValue;
+import org.apache.ignite.configuration.annotation.Value;
+import org.apache.ignite.configuration.sample.configuration.impl.ANode;
+import org.apache.ignite.configuration.storage.Data;
+import
org.apache.ignite.configuration.validation.ConfigurationValidationException;
+import org.apache.ignite.configuration.validation.ValidationIssue;
+import org.hamcrest.collection.IsMapContaining;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+class ConfigurationStorageTest {
+
+ private static final RootKey<?> KEY = () -> "key";
+ /** */
+ @Config
+ public static class AConfigurationSchema {
+ /** */
+ @ConfigValue
+ private BConfigurationSchema child;
+
+ /** */
+ @NamedConfigValue
+ private CConfigurationSchema elements;
+ }
+
+ /** */
+ @Config
+ public static class BConfigurationSchema {
+ /** */
+ @Value(immutable = true)
+ private int intCfg;
+
+ /** */
+ @Value
+ private String strCfg;
+ }
+
+ /** */
+ @Config
+ public static class CConfigurationSchema {
+ /** */
+ @Value
+ private String strCfg;
+ }
+
+ @Test
+ public void testPutGet() {
+ final TestConfigurationStorage storage = new
TestConfigurationStorage();
+
+ final DynamicConfigurationController con = new
DynamicConfigurationController();
+ final Configurator<?> configuration = con.getConfiguration();
+
+ ANode data = new ANode()
+ .initChild(init -> init.initIntCfg(1).initStrCfg("1"))
+ .initElements(change -> change.put("a", init ->
init.initStrCfg("1")));
+
+ final ConfigurationChanger changer = new ConfigurationChanger(storage);
+ changer.init();
+
+ changer.registerConfiguration(KEY, configuration);
+
+ changer.change(Collections.singletonMap(KEY, data));
+
+ final Data dataFromStorage = storage.readAll();
+ final Map<String, Serializable> dataMap = dataFromStorage.values();
+
+ assertEquals(3, dataMap.size());
+ assertThat(dataMap, IsMapContaining.hasEntry("key.child.intCfg", 1));
+ assertThat(dataMap, IsMapContaining.hasEntry("key.child.strCfg", "1"));
+ assertThat(dataMap, IsMapContaining.hasEntry("key.elements.a.strCfg",
"1"));
+ }
+
+ @Test
+ public void testModifiedFromAnotherStorage() {
+ final TestConfigurationStorage.Storage singleSource = new
TestConfigurationStorage.Storage();
+
+ final TestConfigurationStorage storage1 = new
TestConfigurationStorage(singleSource);
+ final TestConfigurationStorage storage2 = new
TestConfigurationStorage(singleSource);
+
+ final DynamicConfigurationController con = new
DynamicConfigurationController();
+ final Configurator<?> configuration = con.getConfiguration();
+
+ ANode data1 = new ANode()
+ .initChild(init -> init.initIntCfg(1).initStrCfg("1"))
+ .initElements(change -> change.put("a", init ->
init.initStrCfg("1")));
+
+ ANode data2 = new ANode()
+ .initChild(init -> init.initIntCfg(2).initStrCfg("2"))
+ .initElements(change -> change
+ .put("a", init -> init.initStrCfg("2"))
+ .put("b", init -> init.initStrCfg("2"))
+ );
+
+ final ConfigurationChanger changer1 = new
ConfigurationChanger(storage1);
+ changer1.init();
+
+ final ConfigurationChanger changer2 = new
ConfigurationChanger(storage2);
+ changer2.init();
+
+ changer1.registerConfiguration(KEY, configuration);
+ changer2.registerConfiguration(KEY, configuration);
+
+ changer1.change(Collections.singletonMap(KEY, data1));
+ changer2.change(Collections.singletonMap(KEY, data2));
+
+ final Data dataFromStorage = storage1.readAll();
+ final Map<String, Serializable> dataMap = dataFromStorage.values();
+
+ assertEquals(4, dataMap.size());
+ assertThat(dataMap, IsMapContaining.hasEntry("key.child.intCfg", 2));
+ assertThat(dataMap, IsMapContaining.hasEntry("key.child.strCfg", "2"));
+ assertThat(dataMap, IsMapContaining.hasEntry("key.elements.a.strCfg",
"2"));
+ assertThat(dataMap, IsMapContaining.hasEntry("key.elements.b.strCfg",
"2"));
+ }
+
+ @Test
+ public void testModifiedFromAnotherStorageWithIncompatibleChanges() {
+ final TestConfigurationStorage.Storage singleSource = new
TestConfigurationStorage.Storage();
+
+ final TestConfigurationStorage storage1 = new
TestConfigurationStorage(singleSource);
+ final TestConfigurationStorage storage2 = new
TestConfigurationStorage(singleSource);
+
+ final DynamicConfigurationController con = new
DynamicConfigurationController();
+
+ final Configurator<?> configuration = con.getConfiguration();
+
+ ANode data1 = new ANode()
+ .initChild(init -> init.initIntCfg(1).initStrCfg("1"))
+ .initElements(change -> change.put("a", init ->
init.initStrCfg("1")));
+
+ ANode data2 = new ANode()
+ .initChild(init -> init.initIntCfg(2).initStrCfg("2"))
+ .initElements(change -> change
+ .put("a", init -> init.initStrCfg("2"))
+ .put("b", init -> init.initStrCfg("2"))
+ );
+
+ final ConfigurationChanger changer1 = new
ConfigurationChanger(storage1);
+ changer1.init();
+
+ final ConfigurationChanger changer2 = new
ConfigurationChanger(storage2);
+ changer2.init();
+
+ changer1.registerConfiguration(KEY, configuration);
+ changer2.registerConfiguration(KEY, configuration);
+
+ changer1.change(Collections.singletonMap(KEY, data1));
+
+ con.setHasIssues(true);
+
+ assertThrows(ConfigurationValidationException.class, () ->
changer2.change(Collections.singletonMap(KEY, data2)));
+
+ final Data dataFromStorage = storage1.readAll();
+ final Map<String, Serializable> dataMap = dataFromStorage.values();
+
+ assertEquals(3, dataMap.size());
+ assertThat(dataMap, IsMapContaining.hasEntry("key.child.intCfg", 1));
+ assertThat(dataMap, IsMapContaining.hasEntry("key.child.strCfg", "1"));
+ assertThat(dataMap, IsMapContaining.hasEntry("key.elements.a.strCfg",
"1"));
+ }
+
+ private static class DynamicConfigurationController {
+
+ final Configurator<?> configuration;
+
+ private boolean hasIssues;
+
+ public DynamicConfigurationController() {
+ this(false);
+ }
+
+ public DynamicConfigurationController(boolean hasIssues) {
+ this.hasIssues = hasIssues;
+
+ configuration = Mockito.mock(Configurator.class);
+
+
Mockito.when(configuration.validateChanges(Mockito.any())).then(mock -> {
+ if (this.hasIssues)
+ return Collections.singletonList(new ValidationIssue());
+
+ return Collections.emptyList();
+ });
+ }
+
+ public void setHasIssues(boolean hasIssues) {
+ this.hasIssues = hasIssues;
+ }
+
+ public Configurator<?> getConfiguration() {
+ return configuration;
+ }
+ }
+
+}
Review comment:
Please add empty line :)
##########
File path:
modules/configuration-storage/src/main/java/org/apache/ignite/configuration/storage/ConfigurationStorage.java
##########
@@ -0,0 +1,43 @@
+/*
+ * 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.ignite.configuration.storage;
+
+import java.io.Serializable;
+import java.util.List;
+import java.util.concurrent.Future;
+
+public interface ConfigurationStorage {
Review comment:
Looks like this and the next class can be removed, right?
##########
File path:
modules/configuration/src/main/java/org/apache/ignite/configuration/ConfigurationChanger.java
##########
@@ -0,0 +1,133 @@
+package org.apache.ignite.configuration;
+
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.stream.Collectors;
+import org.apache.ignite.configuration.storage.ConfigurationStorage;
+import org.apache.ignite.configuration.storage.Data;
+import org.apache.ignite.configuration.tree.ConfigurationVisitor;
+import org.apache.ignite.configuration.tree.InnerNode;
+import org.apache.ignite.configuration.tree.NamedListNode;
+import org.apache.ignite.configuration.tree.TraversableTreeNode;
+import
org.apache.ignite.configuration.validation.ConfigurationValidationException;
+import org.apache.ignite.configuration.validation.ValidationIssue;
+
+// TODO: stupid stub name, think later
+public class ConfigurationChanger {
+
+ private Map<RootKey<?>, Configurator<?>> registry = new HashMap<>();
+
+ private ConfigurationStorage configurationStorage;
+
+ private final AtomicInteger version = new AtomicInteger(0);
+
+ public ConfigurationChanger(ConfigurationStorage configurationStorage) {
+ this.configurationStorage = configurationStorage;
+ }
+
+ public void init() {
+ final Data data = configurationStorage.readAll();
+ version.set(data.version());
+
+ configurationStorage.addListener(changedEntries -> {
+ // TODO: add tree update
+ version.set(changedEntries.version());
+ });
+
+ // TODO: iterate over data and fill Configurators
+ }
+
+ public void registerConfiguration(RootKey<?> key, Configurator<?>
configurator) {
+ registry.put(key, configurator);
+ }
+
+ public <T extends ConfigurationTree<?, ?>> void change(Map<RootKey<?>,
TraversableTreeNode> changes) {
+ Map<String, Serializable> allChanges = changes.entrySet().stream()
+ .map((Map.Entry<RootKey<?>, TraversableTreeNode> change) ->
convertChangesToMap(change.getKey(), change.getValue()))
+ .flatMap(map -> map.entrySet().stream())
+ .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
+
+ boolean success = false;
+
+ List<ValidationIssue> validationIssues = Collections.emptyList();
+
+ while (!success) {
+ validationIssues = validate(changes);
+
+ final int version = this.version.get();
+
+ if (validationIssues.isEmpty())
+ success = configurationStorage.write(allChanges, version);
+ else
+ break;
+ }
+
+ if (!validationIssues.isEmpty())
+ throw new ConfigurationValidationException(validationIssues);
+ }
+
+ private List<ValidationIssue> validate(Map<RootKey<?>,
TraversableTreeNode> changes) {
+ List<ValidationIssue> issues = new ArrayList<>();
+
+ for (Map.Entry<RootKey<?>, TraversableTreeNode> entry :
changes.entrySet()) {
+ RootKey<?> rootKey = entry.getKey();
+ TraversableTreeNode changesForRoot = entry.getValue();
+
+ final Configurator<?> configurator = registry.get(rootKey);
+
+ List<ValidationIssue> list =
configurator.validateChanges(changesForRoot);
+ issues.addAll(list);
+ }
+
+ return issues;
+ }
+
+ private Map<String, Serializable> convertChangesToMap(RootKey<?> rootKey,
TraversableTreeNode node) {
+ Map<String, Serializable> values = new HashMap<>();
+
+ node.accept(null, new ConfigurationVisitor() {
+
+ String currentKey = rootKey.key();
+
+ @Override public void visitLeafNode(String key, Serializable val) {
+ values.put(currentKey + "." + key, val);
+ }
+
+ @Override public void visitInnerNode(String key, InnerNode node) {
+ String previousKey = currentKey;
+
+ if (key != null)
+ currentKey += "." + key;
Review comment:
Please use StringBuilder, concatenation in a recursive method is a bad
idea.
##########
File path:
modules/configuration/src/main/java/org/apache/ignite/configuration/ConfigurationChanger.java
##########
@@ -0,0 +1,133 @@
+package org.apache.ignite.configuration;
+
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.stream.Collectors;
+import org.apache.ignite.configuration.storage.ConfigurationStorage;
+import org.apache.ignite.configuration.storage.Data;
+import org.apache.ignite.configuration.tree.ConfigurationVisitor;
+import org.apache.ignite.configuration.tree.InnerNode;
+import org.apache.ignite.configuration.tree.NamedListNode;
+import org.apache.ignite.configuration.tree.TraversableTreeNode;
+import
org.apache.ignite.configuration.validation.ConfigurationValidationException;
+import org.apache.ignite.configuration.validation.ValidationIssue;
+
+// TODO: stupid stub name, think later
+public class ConfigurationChanger {
+
+ private Map<RootKey<?>, Configurator<?>> registry = new HashMap<>();
+
+ private ConfigurationStorage configurationStorage;
+
+ private final AtomicInteger version = new AtomicInteger(0);
+
+ public ConfigurationChanger(ConfigurationStorage configurationStorage) {
+ this.configurationStorage = configurationStorage;
+ }
+
+ public void init() {
+ final Data data = configurationStorage.readAll();
+ version.set(data.version());
+
+ configurationStorage.addListener(changedEntries -> {
+ // TODO: add tree update
+ version.set(changedEntries.version());
+ });
+
+ // TODO: iterate over data and fill Configurators
+ }
+
+ public void registerConfiguration(RootKey<?> key, Configurator<?>
configurator) {
+ registry.put(key, configurator);
+ }
+
+ public <T extends ConfigurationTree<?, ?>> void change(Map<RootKey<?>,
TraversableTreeNode> changes) {
+ Map<String, Serializable> allChanges = changes.entrySet().stream()
+ .map((Map.Entry<RootKey<?>, TraversableTreeNode> change) ->
convertChangesToMap(change.getKey(), change.getValue()))
+ .flatMap(map -> map.entrySet().stream())
+ .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
+
+ boolean success = false;
+
+ List<ValidationIssue> validationIssues = Collections.emptyList();
+
+ while (!success) {
+ validationIssues = validate(changes);
+
+ final int version = this.version.get();
+
+ if (validationIssues.isEmpty())
+ success = configurationStorage.write(allChanges, version);
+ else
+ break;
+ }
+
+ if (!validationIssues.isEmpty())
+ throw new ConfigurationValidationException(validationIssues);
+ }
+
+ private List<ValidationIssue> validate(Map<RootKey<?>,
TraversableTreeNode> changes) {
+ List<ValidationIssue> issues = new ArrayList<>();
+
+ for (Map.Entry<RootKey<?>, TraversableTreeNode> entry :
changes.entrySet()) {
+ RootKey<?> rootKey = entry.getKey();
+ TraversableTreeNode changesForRoot = entry.getValue();
+
+ final Configurator<?> configurator = registry.get(rootKey);
+
+ List<ValidationIssue> list =
configurator.validateChanges(changesForRoot);
+ issues.addAll(list);
+ }
+
+ return issues;
+ }
+
+ private Map<String, Serializable> convertChangesToMap(RootKey<?> rootKey,
TraversableTreeNode node) {
+ Map<String, Serializable> values = new HashMap<>();
+
+ node.accept(null, new ConfigurationVisitor() {
+
+ String currentKey = rootKey.key();
+
+ @Override public void visitLeafNode(String key, Serializable val) {
+ values.put(currentKey + "." + key, val);
+ }
+
+ @Override public void visitInnerNode(String key, InnerNode node) {
+ String previousKey = currentKey;
+
+ if (key != null)
+ currentKey += "." + key;
+
+ node.traverseChildren(this);
+
+ currentKey = previousKey;
+ }
+
+ @Override public <N extends InnerNode> void
visitNamedListNode(String key, NamedListNode<N> node) {
+ String previousKey = currentKey;
+
+ if (key != null)
+ currentKey += "." + key;
+
+ for (String namedListKey : node.namedListKeys()) {
+ String loopPreviousKey = currentKey;
+ currentKey += "." + namedListKey;
Review comment:
Keep in mind that keys in named lists must be escaped. Methods for that
are locted in this PR right now:
https://github.com/apache/ignite-3/pull/40/files
##########
File path:
modules/configuration/src/main/java/org/apache/ignite/configuration/ConfigurationChanger.java
##########
@@ -0,0 +1,133 @@
+package org.apache.ignite.configuration;
+
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.stream.Collectors;
+import org.apache.ignite.configuration.storage.ConfigurationStorage;
+import org.apache.ignite.configuration.storage.Data;
+import org.apache.ignite.configuration.tree.ConfigurationVisitor;
+import org.apache.ignite.configuration.tree.InnerNode;
+import org.apache.ignite.configuration.tree.NamedListNode;
+import org.apache.ignite.configuration.tree.TraversableTreeNode;
+import
org.apache.ignite.configuration.validation.ConfigurationValidationException;
+import org.apache.ignite.configuration.validation.ValidationIssue;
+
+// TODO: stupid stub name, think later
+public class ConfigurationChanger {
+
+ private Map<RootKey<?>, Configurator<?>> registry = new HashMap<>();
+
+ private ConfigurationStorage configurationStorage;
+
+ private final AtomicInteger version = new AtomicInteger(0);
+
+ public ConfigurationChanger(ConfigurationStorage configurationStorage) {
+ this.configurationStorage = configurationStorage;
+ }
+
+ public void init() {
+ final Data data = configurationStorage.readAll();
+ version.set(data.version());
+
+ configurationStorage.addListener(changedEntries -> {
+ // TODO: add tree update
+ version.set(changedEntries.version());
+ });
+
+ // TODO: iterate over data and fill Configurators
+ }
+
+ public void registerConfiguration(RootKey<?> key, Configurator<?>
configurator) {
+ registry.put(key, configurator);
+ }
+
+ public <T extends ConfigurationTree<?, ?>> void change(Map<RootKey<?>,
TraversableTreeNode> changes) {
+ Map<String, Serializable> allChanges = changes.entrySet().stream()
+ .map((Map.Entry<RootKey<?>, TraversableTreeNode> change) ->
convertChangesToMap(change.getKey(), change.getValue()))
+ .flatMap(map -> map.entrySet().stream())
+ .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
+
+ boolean success = false;
+
+ List<ValidationIssue> validationIssues = Collections.emptyList();
+
+ while (!success) {
+ validationIssues = validate(changes);
+
+ final int version = this.version.get();
Review comment:
I don't see how this version is synchronized with the one that you
validated on. We'll discuss it later.
##########
File path:
modules/configuration/src/main/java/org/apache/ignite/configuration/Configurator.java
##########
@@ -214,9 +205,13 @@ public T getRoot() {
property.addListener(new PropertyListener<PROP, PROP>() {
/** {@inheritDoc} */
@Override public void update(PROP newValue,
ConfigurationProperty<PROP, PROP> modifier) {
- storage.save(key, newValue);
+// storage.save(key, newValue);
Review comment:
Yeah, about these listeners... I guess they'll be completely removed
from the code, we'll discuss this later as well
##########
File path:
modules/configuration/src/main/java/org/apache/ignite/configuration/storage/ConfigurationEntry.java
##########
@@ -0,0 +1,56 @@
+/*
+ * 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.ignite.configuration.storage;
+
+import java.io.Serializable;
+
+/**
+ * Key-value pair.
+ */
+public class ConfigurationEntry {
Review comment:
I see two copies of the same class and it seems that none of them are
actually used anywhere in code. Can you please remove both?
##########
File path:
modules/configuration/src/main/java/org/apache/ignite/configuration/validation/ValidationIssue.java
##########
@@ -0,0 +1,4 @@
+package org.apache.ignite.configuration.validation;
Review comment:
File without a license...
You can ask me how to set up automatic license header creation so you won't
have to do it manually.
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