use token last_activity instead of session value

lib/private/Authentication/Token/DefaultTokenProvider.php

@@ -97,14 +97,17 @@ class DefaultTokenProvider implements IProvider {
 	 * @throws InvalidTokenException
 	 * @param IToken $token
 	 */
-	public function updateToken(IToken $token) {
+	public function updateTokenActivity(IToken $token) {
 		if (!($token instanceof DefaultToken)) {
 			throw new InvalidTokenException();
 		}
 		/** @var DefaultToken $token */
-		$token->setLastActivity($this->time->getTime());
-
-		$this->mapper->update($token);
+		$now = $this->time->getTime();
+		if ($token->getLastActivity() < ($now - 60)) {
+			// Update token only once per minute
+			$token->setLastActivity($now);
+			$this->mapper->update($token);
+		}
 	}
 
 	/**

lib/private/Authentication/Token/IProvider.php

@@ -76,7 +76,7 @@ interface IProvider {
 	 *
 	 * @param IToken $token
 	 */
-	public function updateToken(IToken $token);
+	public function updateTokenActivity(IToken $token);
 
 	/**
 	 * Get all token of a user

lib/private/User/Session.php

@@ -237,8 +237,7 @@ class Session implements IUserSession, Emitter {
 			$this->session->set('last_login_check', $now);
 		}
 
-		// Session is valid, so the token can be refreshed
-		$this->updateToken($token);
+		$this->tokenProvider->updateTokenActivity($token);
 	}
 
 	/**
@@ -541,7 +540,7 @@ class Session implements IUserSession, Emitter {
 				$result = $this->loginWithToken($token->getUID());
 				if ($result) {
 					// Login success
-					$this->updateToken($token);
+					$this->tokenProvider->updateTokenActivity($token);
 					return true;
 				}
 			}
@@ -551,19 +550,6 @@ class Session implements IUserSession, Emitter {
 		return false;
 	}
 
-	/**
-	 * @param IToken $token
-	 */
-	private function updateToken(IToken $token) {
-		// To save unnecessary DB queries, this is only done once a minute
-		$lastTokenUpdate = $this->session->get('last_token_update') ? : 0;
-		$now = $this->timeFacory->getTime();
-		if ($lastTokenUpdate < ($now - 60)) {
-			$this->tokenProvider->updateToken($token);
-			$this->session->set('last_token_update', $now);
-		}
-	}
-
 	/**
 	 * Tries to login the user with auth token header
 	 *

tests/lib/Authentication/Token/DefaultTokenProviderTest.php

@@ -97,15 +97,26 @@ class DefaultTokenProviderTest extends TestCase {
 
 	public function testUpdateToken() {
 		$tk = new DefaultToken();
+		$tk->setLastActivity($this->time - 200);
 		$this->mapper->expects($this->once())
 			->method('update')
 			->with($tk);
 
-		$this->tokenProvider->updateToken($tk);
+		$this->tokenProvider->updateTokenActivity($tk);
 
 		$this->assertEquals($this->time, $tk->getLastActivity());
 	}
 
+	public function testUpdateTokenDebounce() {
+		$tk = new DefaultToken();
+		$tk->setLastActivity($this->time - 30);
+		$this->mapper->expects($this->never())
+			->method('update')
+			->with($tk);
+
+		$this->tokenProvider->updateTokenActivity($tk);
+	}
+	
 	public function testGetTokenByUser() {
 		$user = $this->getMock('\OCP\IUser');
 		$this->mapper->expects($this->once())