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https://issues.apache.org/jira/browse/KNOX-2554?focusedWorklogId=582368&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-582368
 ]

ASF GitHub Bot logged work on KNOX-2554:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 14/Apr/21 10:42
            Start Date: 14/Apr/21 10:42
    Worklog Time Spent: 10m 
      Work Description: moresandeep commented on a change in pull request #433:
URL: https://github.com/apache/knox/pull/433#discussion_r613137209



##########
File path: 
gateway-server/src/main/java/org/apache/knox/gateway/services/token/impl/JDBCTokenStateService.java
##########
@@ -0,0 +1,180 @@
+/*
+ * 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.knox.gateway.services.token.impl;
+
+import java.sql.SQLException;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import org.apache.knox.gateway.config.GatewayConfig;
+import org.apache.knox.gateway.services.ServiceLifecycleException;
+import org.apache.knox.gateway.services.security.AliasService;
+import org.apache.knox.gateway.services.security.token.TokenMetadata;
+import org.apache.knox.gateway.services.security.token.UnknownTokenException;
+import org.apache.knox.gateway.util.JDBCUtils;
+import org.apache.knox.gateway.util.Tokens;
+
+public class JDBCTokenStateService extends DefaultTokenStateService {
+  private AliasService aliasService; // connection username/pw is stored here
+  private TokenStateDatabase tokenDatabase;
+
+  public void setAliasService(AliasService aliasService) {
+    this.aliasService = aliasService;
+  }
+
+  @Override
+  public void init(GatewayConfig config, Map<String, String> options) throws 
ServiceLifecycleException {
+    super.init(config, options);
+    if (aliasService == null) {
+      throw new ServiceLifecycleException("The required AliasService reference 
has not been set.");
+    }
+    try {
+      this.tokenDatabase = new 
TokenStateDatabase(JDBCUtils.getDataSource(config, aliasService));
+    } catch (Exception e) {
+      throw new ServiceLifecycleException("Error while initiating 
JDBCTokenStateService: " + e, e);
+    }
+  }
+
+  @Override
+  public void addToken(String tokenId, long issueTime, long expiration, long 
maxLifetimeDuration) {
+    super.addToken(tokenId, issueTime, expiration, maxLifetimeDuration);
+    try {
+      final boolean added = tokenDatabase.addToken(tokenId, issueTime, 
expiration, maxLifetimeDuration);
+      if (added) {
+        log.savedTokenInDatabase(Tokens.getTokenIDDisplayText(tokenId));
+      } else {
+        log.failedToSaveTokenInDatabase(Tokens.getTokenIDDisplayText(tokenId));
+      }
+    } catch (SQLException e) {
+      log.errorSavingTokenInDatabase(Tokens.getTokenIDDisplayText(tokenId), 
e.getMessage(), e);
+    }
+  }
+
+  @Override
+  protected void removeTokens(Set<String> tokenIds) {
+    try {
+      boolean removed = tokenDatabase.removeTokens(tokenIds);
+      if (removed) {
+        log.removedTokensFromDatabase(tokenIds.size());
+      } else {
+        log.failedToRemoveTokensFromDatabase(tokenIds.size());
+      }
+    } catch (SQLException e) {
+      log.errorRemovingTokensFromDatabase(tokenIds.size(), e.getMessage(), e);
+    }
+    super.removeTokens(tokenIds);
+  }
+
+  @Override
+  public long getTokenExpiration(String tokenId, boolean validate) throws 
UnknownTokenException {
+    try {
+      // check the in-memory cache, then
+      return super.getTokenExpiration(tokenId, validate);
+    } catch (UnknownTokenException e) {
+      // It's not in memory
+    }
+
+    long expiration = 0;
+    try {
+      expiration = tokenDatabase.getTokenExpiration(tokenId);
+      log.fetchedExpirationFromDatabase(Tokens.getTokenIDDisplayText(tokenId), 
expiration);
+    } catch (SQLException e) {
+      
log.errorFetchingExpirationFromDatabase(Tokens.getTokenIDDisplayText(tokenId), 
e.getMessage(), e);
+    }
+    return expiration;
+  }
+
+  @Override
+  protected void updateExpiration(String tokenId, long expiration) {
+    // Update in-memory
+    super.updateExpiration(tokenId, expiration);
+
+    try {
+      final boolean updated = tokenDatabase.updateExpiration(tokenId, 
expiration);
+      if (updated) {
+        log.updatedExpirationInDatabase(Tokens.getTokenIDDisplayText(tokenId), 
expiration);
+      } else {
+        
log.failedToUpdateExpirationInDatabase(Tokens.getTokenIDDisplayText(tokenId), 
expiration);
+      }
+    } catch (SQLException e) {
+      
log.errorUpdatingExpirationInDatabase(Tokens.getTokenIDDisplayText(tokenId), 
e.getMessage(), e);
+    }
+  }
+
+  @Override
+  protected long getMaxLifetime(String tokenId) {
+    long maxLifetime = super.getMaxLifetime(tokenId);
+
+    // If there is no result from the in-memory collection, proceed to check 
the Database
+    if (maxLifetime < 1L) {
+      try {
+        maxLifetime = tokenDatabase.getMaxLifetime(tokenId);
+        
log.fetchedMaxLifetimeFromDatabase(Tokens.getTokenIDDisplayText(tokenId), 
maxLifetime);
+      } catch (SQLException e) {
+        
log.errorFetchingMaxLifetimeFromDatabase(Tokens.getTokenIDDisplayText(tokenId), 
e.getMessage(), e);
+      }
+    }
+    return maxLifetime;
+  }
+
+  @Override
+  protected boolean isUnknown(String tokenId) {
+    boolean isUnknown = super.isUnknown(tokenId);
+
+    // If it's not in the cache, then check in the Database
+    if (isUnknown) {
+      try {
+        isUnknown = tokenDatabase.getMaxLifetime(tokenId) < 0;
+      } catch (SQLException e) {
+        
log.errorFetchingMaxLifetimeFromDatabase(Tokens.getTokenIDDisplayText(tokenId), 
e.getMessage(), e);
+      }
+    }
+    return isUnknown;
+  }
+
+  @Override
+  protected List<String> getTokenIds() {
+    List<String> tokenIds = new LinkedList<>();
+    try {
+      tokenIds = tokenDatabase.getTokenIds();

Review comment:
       My concern is the SELECT clause blowing up, atleast we should use LIMIT 
clause 
   ie
   `SELECT * FROM tbl LIMIT 5,10;  # Retrieve rows 6-15`




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Issue Time Tracking
-------------------

    Worklog Id:     (was: 582368)
    Time Spent: 50m  (was: 40m)

> Implement JDBC TokenStateService
> --------------------------------
>
>                 Key: KNOX-2554
>                 URL: https://issues.apache.org/jira/browse/KNOX-2554
>             Project: Apache Knox
>          Issue Type: Task
>            Reporter: Sandor Molnar
>            Assignee: Sandor Molnar
>            Priority: Major
>             Fix For: 1.6.0
>
>          Time Spent: 50m
>  Remaining Estimate: 0h
>
> Add a new TokenStateService implementation that stores token metadata in a 
> relational database.



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