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spring-cloud-netflix
Commit fa45a9f3 by Bertrand Renuart Committed by Spencer Gibb
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Use a fixed size buffer for the copy operation (#1538)

Set the default buffer size to 8192 to match Tomcat and Jetty defaults Use a buffer per worker thread and use it for subsequent requests
parent 98cd592f
Showing with 15 additions and 13 deletions
spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/zuul/filters/post/SendResponseFilter.java
......@@ -48,7 +48,7 @@ public class SendResponseFilter extends ZuulFilter {
private static DynamicIntProperty INITIAL_STREAM_BUFFER_SIZE = DynamicPropertyFactory
.getInstance()
.getIntProperty(ZuulConstants.ZUUL_INITIAL_STREAM_BUFFER_SIZE, 1024);
.getIntProperty(ZuulConstants.ZUUL_INITIAL_STREAM_BUFFER_SIZE, 8192);
private static DynamicBooleanProperty SET_CONTENT_LENGTH = DynamicPropertyFactory
.getInstance()
......@@ -65,6 +65,13 @@ public class SendResponseFilter extends ZuulFilter {
}
}
private ThreadLocal<byte[]> buffers = new ThreadLocal<byte[]>() {
@Override
protected byte[] initialValue() {
return new byte[INITIAL_STREAM_BUFFER_SIZE.get()];
}
};
@Override
public String filterType() {
return "post";
......@@ -177,21 +184,16 @@ public class SendResponseFilter extends ZuulFilter {
}
private void writeResponse(InputStream zin, OutputStream out) throws Exception {
byte[] bytes = new byte[INITIAL_STREAM_BUFFER_SIZE.get()];
int bytesRead = -1;
while ((bytesRead = zin.read(bytes)) != -1) {
try {
try {
byte[] bytes = buffers.get();
int bytesRead = -1;
while ((bytesRead = zin.read(bytes)) != -1) {
out.write(bytes, 0, bytesRead);
out.flush();
}
catch (IOException ex) {
// ignore
}
// doubles buffer size if previous read filled it
if (bytesRead == bytes.length) {
bytes = new byte[bytes.length * 2];
}
}
catch(IOException ioe) {
log.warn("Error while sending response to client: "+ioe.getMessage());
}
}
private void addResponseHeaders() {
......
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