-
Notifications
You must be signed in to change notification settings - Fork 80
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Co-Authored-By: Prakhar Sapre <[email protected]>
- Loading branch information
1 parent
7a339c2
commit fe0e040
Showing
10 changed files
with
381 additions
and
271 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
132 changes: 132 additions & 0 deletions
132
gateway-ha/src/main/java/io/trino/gateway/ha/router/FileBasedRoutingGroupSelector.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,132 @@ | ||
| /* | ||
| * 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; | ||
|
|
||
| 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.ImmutableMap; | ||
| import io.trino.gateway.ha.config.RequestAnalyzerConfig; | ||
| import jakarta.servlet.http.HttpServletRequest; | ||
|
|
||
| import java.io.IOException; | ||
| import java.nio.file.Files; | ||
| import java.nio.file.Path; | ||
| import java.nio.file.Paths; | ||
| import java.nio.file.attribute.BasicFileAttributes; | ||
| import java.util.ArrayList; | ||
| import java.util.HashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
|
|
||
| import static java.nio.charset.StandardCharsets.UTF_8; | ||
| import static java.util.Collections.sort; | ||
|
|
||
| public class FileBasedRoutingGroupSelector | ||
| implements RoutingGroupSelector | ||
| { | ||
| public static final String RESULTS_ROUTING_GROUP_KEY = "routingGroup"; | ||
|
|
||
| private List<RoutingRule> rules; | ||
| final boolean analyzeRequest; | ||
| final boolean clientsUseV2Format; | ||
| final int maxBodySize; | ||
| final TrinoRequestUser.TrinoRequestUserProvider trinoRequestUserProvider; | ||
| private volatile long lastUpdatedTimeMillis; | ||
| Path rulesPath; | ||
|
|
||
| public FileBasedRoutingGroupSelector(String rulesPath, RequestAnalyzerConfig requestAnalyzerConfig) | ||
| { | ||
| analyzeRequest = requestAnalyzerConfig.isAnalyzeRequest(); | ||
| clientsUseV2Format = requestAnalyzerConfig.isClientsUseV2Format(); | ||
| maxBodySize = requestAnalyzerConfig.getMaxBodySize(); | ||
| trinoRequestUserProvider = new TrinoRequestUser.TrinoRequestUserProvider(requestAnalyzerConfig); | ||
| this.rulesPath = Paths.get(rulesPath); | ||
|
|
||
| setRules(readRulesFromPath(this.rulesPath)); | ||
| } | ||
|
|
||
| void setRules(List<RoutingRule> rules) | ||
| { | ||
| this.rules = new ArrayList<>(rules); | ||
| lastUpdatedTimeMillis = System.currentTimeMillis(); | ||
| sort(this.rules); | ||
| } | ||
|
|
||
| // TODO: add CRUD operations for the rules | ||
|
|
||
| @Override | ||
| public String findRoutingGroup(HttpServletRequest request) | ||
| { | ||
| reloadRules(lastUpdatedTimeMillis); | ||
| Map<String, String> result = new HashMap<>(); | ||
| Map<String, Object> state = new HashMap<>(); | ||
|
|
||
| Map<String, Object> data; | ||
| if (analyzeRequest) { | ||
| TrinoQueryProperties trinoQueryProperties = new TrinoQueryProperties( | ||
| request, | ||
| clientsUseV2Format, | ||
| maxBodySize); | ||
| TrinoRequestUser trinoRequestUser = trinoRequestUserProvider.getInstance(request); | ||
| data = ImmutableMap.of("request", request, "trinoQueryProperties", trinoQueryProperties, "trinoRequestUser", trinoRequestUser); | ||
| } | ||
| else { | ||
| data = ImmutableMap.of("request", request); | ||
| } | ||
|
|
||
| rules.forEach(rule -> { | ||
| if (rule.evaluateCondition(data, state)) { | ||
| rule.evaluateAction(result, data, state); | ||
| } | ||
| }); | ||
| return result.get(RESULTS_ROUTING_GROUP_KEY); | ||
| } | ||
|
|
||
| void reloadRules(long lastUpdatedTimeMillis) | ||
| { | ||
| try { | ||
| BasicFileAttributes attr = Files.readAttributes(this.rulesPath, BasicFileAttributes.class); | ||
| if (attr.lastModifiedTime().toMillis() > lastUpdatedTimeMillis) { | ||
| synchronized (this) { | ||
| if (attr.lastModifiedTime().toMillis() > lastUpdatedTimeMillis) { | ||
| List<RoutingRule> ruleList = readRulesFromPath(this.rulesPath); | ||
| setRules(ruleList); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| catch (IOException e) { | ||
| throw new RuntimeException("Could not access rules file", e); | ||
| } | ||
| } | ||
|
|
||
| public List<RoutingRule> readRulesFromPath(Path rulesPath) | ||
| { | ||
| ObjectMapper yamlReader = new ObjectMapper(new YAMLFactory()); | ||
| try { | ||
| String content = Files.readString(rulesPath, UTF_8); | ||
| YAMLParser parser = new YAMLFactory().createParser(content); | ||
| List<RoutingRule> routingRulesList = new ArrayList<>(); | ||
| while (parser.nextToken() != null) { | ||
| MVELRoutingRule routingRules = yamlReader.readValue(parser, MVELRoutingRule.class); | ||
| routingRulesList.add(routingRules); | ||
| } | ||
| return routingRulesList; | ||
| } | ||
| catch (IOException e) { | ||
| throw new RuntimeException("Failed to read or parse routing rules configuration from path: " + rulesPath, e); | ||
| } | ||
| } | ||
| } |
Oops, something went wrong.