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Improved sha1 gen performance by using buffered streams.

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Signed-off-by: Kai Zimmermann <kai.zimmermann@bosch-si.com>
This commit is contained in:
Kai Zimmermann
2016-05-10 13:12:19 +02:00
parent bc37ea9b23
commit 1236f65d9d
2 changed files with 21 additions and 6 deletions
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12
examples/hawkbit-device-simulator/src/main/java/org/eclipse/hawkbit/simulator/DeviceSimulatorUpdater.java
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@@ -8,6 +8,8 @@
*/
package org.eclipse.hawkbit.simulator;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
@@ -232,9 +234,15 @@ public class DeviceSimulatorUpdater {
final MessageDigest md = MessageDigest.getInstance("SHA-1");
try (final DigestOutputStream dos = new DigestOutputStream(new FileOutputStream(tempFile), md)) {
overallread = ByteStreams.copy(response.getEntity().getContent(), dos);
try (final BufferedOutputStream bdos = new BufferedOutputStream(dos)) {
try (BufferedInputStream bis = new BufferedInputStream(response.getEntity().getContent())) {
overallread = ByteStreams.copy(bis, bdos);
}
}
} finally {
tempFile.delete();
if (tempFile != null && !tempFile.delete()) {
LOGGER.error("Could not delete temporary file: {}", tempFile);
}
}
if (overallread != size) {