writethrottlefilter.html

MINA+API 关于MINA的API

<a name="345" href="#345">345</a>         } <strong class="jxr_keyword">finally</strong> {
<a name="346" href="#346">346</a>             notifyWaitingWriters();
<a name="347" href="#347">347</a>         }
<a name="348" href="#348">348</a>     }
<a name="349" href="#349">349</a> 
<a name="350" href="#350">350</a>     @Override
<a name="351" href="#351">351</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> sessionClosed(<a href="../../../../../org/apache/mina/common/IoFilter.html">NextFilter</a> nextFilter, <a href="../../../../../org/apache/mina/common/IoSession.html">IoSession</a> session)
<a name="352" href="#352">352</a>             <strong class="jxr_keyword">throws</strong> Exception {
<a name="353" href="#353">353</a>         notifyWaitingWriters();
<a name="354" href="#354">354</a>         nextFilter.sessionClosed(session);
<a name="355" href="#355">355</a>     }
<a name="356" href="#356">356</a> 
<a name="357" href="#357">357</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> block(<a href="../../../../../org/apache/mina/common/IoSession.html">IoSession</a> session) {
<a name="358" href="#358">358</a>         <strong class="jxr_keyword">synchronized</strong> (blockLock) {
<a name="359" href="#359">359</a>             blockWaiters ++;
<a name="360" href="#360">360</a>             <strong class="jxr_keyword">while</strong> (!readyToWrite(session)) {
<a name="361" href="#361">361</a>                 <strong class="jxr_keyword">try</strong> {
<a name="362" href="#362">362</a>                     blockLock.wait();
<a name="363" href="#363">363</a>                 } <strong class="jxr_keyword">catch</strong> (InterruptedException e) {
<a name="364" href="#364">364</a>                     <em class="jxr_comment">// Ignore.</em>
<a name="365" href="#365">365</a>                 }
<a name="366" href="#366">366</a>             }
<a name="367" href="#367">367</a>             blockWaiters --;
<a name="368" href="#368">368</a>         }
<a name="369" href="#369">369</a>     }
<a name="370" href="#370">370</a>     
<a name="371" href="#371">371</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> notifyWaitingWriters() {
<a name="372" href="#372">372</a>         <strong class="jxr_keyword">synchronized</strong> (blockLock) {
<a name="373" href="#373">373</a>             <strong class="jxr_keyword">if</strong> (blockWaiters != 0) {
<a name="374" href="#374">374</a>                 blockLock.notifyAll();
<a name="375" href="#375">375</a>             }
<a name="376" href="#376">376</a>         }
<a name="377" href="#377">377</a>     }
<a name="378" href="#378">378</a> 
<a name="379" href="#379">379</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> fail(<a href="../../../../../org/apache/mina/common/IoSession.html">IoSession</a> session, <a href="../../../../../org/apache/mina/common/WriteRequest.html">WriteRequest</a> writeRequest) <strong class="jxr_keyword">throws</strong> WriteException {
<a name="380" href="#380">380</a>         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/mina/filter/traffic/WriteFloodException.html">WriteFloodException</a>(writeRequest, getMessage(session));
<a name="381" href="#381">381</a>     }
<a name="382" href="#382">382</a>     
<a name="383" href="#383">383</a>     <strong class="jxr_keyword">private</strong> String getMessage(<a href="../../../../../org/apache/mina/common/IoSession.html">IoSession</a> session) {
<a name="384" href="#384">384</a>         <strong class="jxr_keyword">int</strong>  mSession = maxSessionScheduledWriteMessages;
<a name="385" href="#385">385</a>         <strong class="jxr_keyword">long</strong> bSession = maxSessionScheduledWriteBytes;
<a name="386" href="#386">386</a>         <strong class="jxr_keyword">int</strong>  mService = maxServiceScheduledWriteMessages;
<a name="387" href="#387">387</a>         <strong class="jxr_keyword">long</strong> bService = maxServiceScheduledWriteBytes;
<a name="388" href="#388">388</a>         <strong class="jxr_keyword">int</strong>  mGlobal  = maxGlobalScheduledWriteMessages;
<a name="389" href="#389">389</a>         <strong class="jxr_keyword">long</strong> bGlobal  = maxGlobalScheduledWriteBytes;
<a name="390" href="#390">390</a> 
<a name="391" href="#391">391</a>         StringBuilder buf = <strong class="jxr_keyword">new</strong> StringBuilder(512);
<a name="392" href="#392">392</a>         buf.append(<span class="jxr_string">"Write requests flooded - session: "</span>);
<a name="393" href="#393">393</a>         <strong class="jxr_keyword">if</strong> (mSession != 0) {
<a name="394" href="#394">394</a>             buf.append(session.getScheduledWriteMessages());
<a name="395" href="#395">395</a>             buf.append(<span class="jxr_string">" / "</span>);
<a name="396" href="#396">396</a>             buf.append(mSession);
<a name="397" href="#397">397</a>             buf.append(<span class="jxr_string">" msgs, "</span>);
<a name="398" href="#398">398</a>         } <strong class="jxr_keyword">else</strong> {
<a name="399" href="#399">399</a>             buf.append(session.getScheduledWriteMessages());
<a name="400" href="#400">400</a>             buf.append(<span class="jxr_string">" / unlimited msgs, "</span>);
<a name="401" href="#401">401</a>         }
<a name="402" href="#402">402</a>         
<a name="403" href="#403">403</a>         <strong class="jxr_keyword">if</strong> (bSession != 0) {
<a name="404" href="#404">404</a>             buf.append(session.getScheduledWriteBytes());
<a name="405" href="#405">405</a>             buf.append(<span class="jxr_string">" / "</span>);
<a name="406" href="#406">406</a>             buf.append(bSession);
<a name="407" href="#407">407</a>             buf.append(<span class="jxr_string">" bytes, "</span>);
<a name="408" href="#408">408</a>         } <strong class="jxr_keyword">else</strong> {
<a name="409" href="#409">409</a>             buf.append(session.getScheduledWriteBytes());
<a name="410" href="#410">410</a>             buf.append(<span class="jxr_string">" / unlimited bytes, "</span>);
<a name="411" href="#411">411</a>         }
<a name="412" href="#412">412</a>         
<a name="413" href="#413">413</a>         buf.append(<span class="jxr_string">"service: "</span>);
<a name="414" href="#414">414</a>         <strong class="jxr_keyword">if</strong> (mService != 0) {
<a name="415" href="#415">415</a>             buf.append(session.getService().getScheduledWriteMessages());
<a name="416" href="#416">416</a>             buf.append(<span class="jxr_string">" / "</span>);
<a name="417" href="#417">417</a>             buf.append(mService);
<a name="418" href="#418">418</a>             buf.append(<span class="jxr_string">" msgs, "</span>);
<a name="419" href="#419">419</a>         } <strong class="jxr_keyword">else</strong> {
<a name="420" href="#420">420</a>             buf.append(session.getService().getScheduledWriteMessages());
<a name="421" href="#421">421</a>             buf.append(<span class="jxr_string">" / unlimited msgs, "</span>);
<a name="422" href="#422">422</a>         }
<a name="423" href="#423">423</a>         
<a name="424" href="#424">424</a>         <strong class="jxr_keyword">if</strong> (bService != 0) {
<a name="425" href="#425">425</a>             buf.append(session.getService().getScheduledWriteBytes());
<a name="426" href="#426">426</a>             buf.append(<span class="jxr_string">" / "</span>);
<a name="427" href="#427">427</a>             buf.append(bService);
<a name="428" href="#428">428</a>             buf.append(<span class="jxr_string">" bytes, "</span>);
<a name="429" href="#429">429</a>         } <strong class="jxr_keyword">else</strong> {
<a name="430" href="#430">430</a>             buf.append(session.getService().getScheduledWriteBytes());
<a name="431" href="#431">431</a>             buf.append(<span class="jxr_string">" / unlimited bytes, "</span>);
<a name="432" href="#432">432</a>         }
<a name="433" href="#433">433</a>         
<a name="434" href="#434">434</a>         buf.append(<span class="jxr_string">"global: "</span>);
<a name="435" href="#435">435</a>         <strong class="jxr_keyword">if</strong> (mGlobal != 0) {
<a name="436" href="#436">436</a>             buf.append(getGlobalScheduledWriteMessages());
<a name="437" href="#437">437</a>             buf.append(<span class="jxr_string">" / "</span>);
<a name="438" href="#438">438</a>             buf.append(mGlobal);
<a name="439" href="#439">439</a>             buf.append(<span class="jxr_string">" msgs, "</span>);
<a name="440" href="#440">440</a>         } <strong class="jxr_keyword">else</strong> {
<a name="441" href="#441">441</a>             buf.append(getGlobalScheduledWriteMessages());
<a name="442" href="#442">442</a>             buf.append(<span class="jxr_string">" / unlimited msgs, "</span>);
<a name="443" href="#443">443</a>         }
<a name="444" href="#444">444</a>         
<a name="445" href="#445">445</a>         <strong class="jxr_keyword">if</strong> (bGlobal != 0) {
<a name="446" href="#446">446</a>             buf.append(getGlobalScheduledWriteBytes());
<a name="447" href="#447">447</a>             buf.append(<span class="jxr_string">" / "</span>);
<a name="448" href="#448">448</a>             buf.append(bGlobal);
<a name="449" href="#449">449</a>             buf.append(<span class="jxr_string">" bytes."</span>);
<a name="450" href="#450">450</a>         } <strong class="jxr_keyword">else</strong> {
<a name="451" href="#451">451</a>             buf.append(getGlobalScheduledWriteBytes());
<a name="452" href="#452">452</a>             buf.append(<span class="jxr_string">" / unlimited bytes."</span>);
<a name="453" href="#453">453</a>         }
<a name="454" href="#454">454</a>         
<a name="455" href="#455">455</a>         <strong class="jxr_keyword">return</strong> buf.toString();
<a name="456" href="#456">456</a>     }
<a name="457" href="#457">457</a> }
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