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Show and modify routing rules from the UI
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34 changes: 34 additions & 0 deletions
34
gateway-ha/src/main/java/io/trino/gateway/ha/config/UIConfiguration.java
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|---|---|---|
| @@ -0,0 +1,34 @@ | ||
| /* | ||
| * Licensed 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 io.trino.gateway.ha.config; | ||
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| import com.fasterxml.jackson.annotation.JsonProperty; | ||
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| import java.util.List; | ||
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| public class UIConfiguration | ||
| { | ||
| private List<String> disablePages; | ||
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| @JsonProperty | ||
| public List<String> getDisablePages() | ||
| { | ||
| return disablePages; | ||
| } | ||
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| public void setDisablePages(List<String> disablePages) | ||
| { | ||
| this.disablePages = disablePages; | ||
| } | ||
| } |
46 changes: 46 additions & 0 deletions
46
gateway-ha/src/main/java/io/trino/gateway/ha/domain/RoutingRule.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| /* | ||
| * Licensed 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 io.trino.gateway.ha.domain; | ||
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| import com.google.common.collect.ImmutableList; | ||
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| import java.util.List; | ||
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| import static java.util.Objects.requireNonNull; | ||
| import static java.util.Objects.requireNonNullElse; | ||
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| /** | ||
| * RoutingRules | ||
| * | ||
| * @param name name of the routing rule | ||
| * @param description description of the routing rule | ||
| * @param priority priority of the routing rule. Higher number represents higher priority. If two rules have same priority then order of execution is not guaranteed. | ||
| * @param actions actions of the routing rule | ||
| * @param condition condition of the routing rule | ||
| */ | ||
| public record RoutingRule( | ||
| String name, | ||
| String description, | ||
| Integer priority, | ||
| List<String> actions, | ||
| String condition) | ||
| { | ||
| public RoutingRule { | ||
| requireNonNull(name, "name is null"); | ||
| requireNonNullElse(description, ""); | ||
| requireNonNullElse(priority, 0); | ||
| actions = ImmutableList.copyOf(actions); | ||
| requireNonNull(condition, "condition is null"); | ||
| } | ||
| } |
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90 changes: 90 additions & 0 deletions
90
gateway-ha/src/main/java/io/trino/gateway/ha/router/RoutingRulesManager.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,90 @@ | ||
| /* | ||
| * Licensed 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 io.trino.gateway.ha.router; | ||
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| import com.fasterxml.jackson.databind.ObjectMapper; | ||
| import com.fasterxml.jackson.dataformat.yaml.YAMLFactory; | ||
| import com.fasterxml.jackson.dataformat.yaml.YAMLParser; | ||
| import com.google.common.collect.ImmutableList; | ||
| import com.google.inject.Inject; | ||
| import io.trino.gateway.ha.config.HaGatewayConfiguration; | ||
| import io.trino.gateway.ha.domain.RoutingRule; | ||
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| import java.io.IOException; | ||
| import java.nio.channels.FileChannel; | ||
| import java.nio.channels.FileLock; | ||
| import java.nio.file.Files; | ||
| import java.nio.file.Path; | ||
| import java.nio.file.StandardOpenOption; | ||
| import java.util.List; | ||
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| import static java.nio.charset.StandardCharsets.UTF_8; | ||
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| public class RoutingRulesManager | ||
| { | ||
| private final String rulesConfigPath; | ||
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| @Inject | ||
| public RoutingRulesManager(HaGatewayConfiguration configuration) | ||
| { | ||
| this.rulesConfigPath = configuration.getRoutingRules().getRulesConfigPath(); | ||
| } | ||
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| public List<RoutingRule> getRoutingRules() | ||
| throws IOException | ||
| { | ||
| ObjectMapper yamlReader = new ObjectMapper(new YAMLFactory()); | ||
| ImmutableList.Builder<RoutingRule> routingRulesBuilder = ImmutableList.builder(); | ||
| try { | ||
| String content = Files.readString(Path.of(rulesConfigPath), UTF_8); | ||
| YAMLParser parser = new YAMLFactory().createParser(content); | ||
| while (parser.nextToken() != null) { | ||
| RoutingRule routingRule = yamlReader.readValue(parser, RoutingRule.class); | ||
| routingRulesBuilder.add(routingRule); | ||
| } | ||
| return routingRulesBuilder.build(); | ||
| } | ||
| catch (IOException e) { | ||
| throw new IOException("Failed to read or parse routing rules configuration from path : " + rulesConfigPath, e); | ||
| } | ||
| } | ||
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| public synchronized List<RoutingRule> updateRoutingRule(RoutingRule routingRule) | ||
| throws IOException | ||
| { | ||
| ImmutableList.Builder<RoutingRule> updatedRoutingRulesBuilder = ImmutableList.builder(); | ||
| List<RoutingRule> currentRoutingRulesList = getRoutingRules(); | ||
| try (FileChannel fileChannel = FileChannel.open(Path.of(rulesConfigPath), StandardOpenOption.WRITE, StandardOpenOption.READ); | ||
| FileLock lock = fileChannel.lock()) { | ||
| ObjectMapper yamlWriter = new ObjectMapper(new YAMLFactory()); | ||
| StringBuilder yamlContent = new StringBuilder(); | ||
| for (RoutingRule rule : currentRoutingRulesList) { | ||
| if (rule.name().equals(routingRule.name())) { | ||
| yamlContent.append(yamlWriter.writeValueAsString(routingRule)); | ||
| updatedRoutingRulesBuilder.add(routingRule); | ||
| } | ||
| else { | ||
| yamlContent.append(yamlWriter.writeValueAsString(rule)); | ||
| updatedRoutingRulesBuilder.add(rule); | ||
| } | ||
| } | ||
| Files.writeString(Path.of(rulesConfigPath), yamlContent.toString(), UTF_8); | ||
| lock.release(); | ||
| } | ||
| catch (IOException e) { | ||
| throw new IOException("Failed to parse or update routing rules configuration form path : " + rulesConfigPath, e); | ||
| } | ||
| return updatedRoutingRulesBuilder.build(); | ||
| } | ||
| } |
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