Hi, Denis.
Thank you for creating the issue. I will keep an eye on it. If nobody picks
it up, and I find free time, then I will pick up it myself. When do you
plan to release 1.9.0 version (is there a roadmap)? (as I've not seen you've
been releasing minor versions like 1.8.1 including some of the bug fixes or
you do?).
Regards the credentials provider refreshing the credentials. I would say it
depends on the implementation, but I've checked a few main used by
DefaultAWSCredentialsProviderChain:
public class DefaultAWSCredentialsProviderChain extends
AWSCredentialsProviderChain {
public DefaultAWSCredentialsProviderChain() {
super(new EnvironmentVariableCredentialsProvider(),
new SystemPropertiesCredentialsProvider(),
new ProfileCredentialsProvider(),
new InstanceProfileCredentialsProvider());
}
}
all of them always do some extra work in the `getCredentials` method rather
than just simply return credentials.
Quite interesting implementation ProfileCredentialsProvider has:
public AWSCredentials getCredentials() {
if (profilesConfigFile == null) {
synchronized (this) {
if (profilesConfigFile == null) {
profilesConfigFile = new ProfilesConfigFile();
lastRefreshed = System.nanoTime();
}
}
}
// Periodically check if the file on disk has been modified
// since we last read it.
//
// For active applications, only have one thread block.
// For applications that use this method in bursts, ensure the
// credentials are never too stale.
long now = System.nanoTime();
long age = now - lastRefreshed;
if (age > refreshForceIntervalNanos) {
refresh();
} else if (age > refreshIntervalNanos) {
if (refreshSemaphore.tryAcquire()) {
try {
refresh();
} finally {
refreshSemaphore.release();
}
}
}
return profilesConfigFile.getCredentials(profileName);
}
where it periodically refreshed the profile file to check if the credentials
were updated in the meanwhile.
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