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Indirect agent connection improvements #13345

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Indirect agent connection improvements #13345

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04ee4fe
Indirect agent connection improvements, includes the following improv…
mprokopchuk Apr 10, 2026
90d83ca
fix test
sureshanaparti Apr 15, 2026
1d40f5a
removed index, api_key column is drooped from user table
sureshanaparti May 8, 2026
9d40aac
Fix sendStartup during ping
sureshanaparti May 11, 2026
36bdd63
reconnect lock fix
sureshanaparti May 13, 2026
59b9add
unlock fix
sureshanaparti May 14, 2026
8a2cac8
Fixes for the following bugs:
sureshanaparti Jun 4, 2026
a3e6b6e
review changes
sureshanaparti Jun 4, 2026
05f2ab4
review
sureshanaparti Jun 4, 2026
8a090ca
Dedup agent connection requests
mprokopchuk Aug 26, 2026
9d9bbea
Remove IP address dependency for management server communication
mprokopchuk Aug 27, 2026
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824 changes: 557 additions & 267 deletions agent/src/main/java/com/cloud/agent/Agent.java
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33 changes: 24 additions & 9 deletions agent/src/main/java/com/cloud/agent/AgentShell.java
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,7 @@

import javax.naming.ConfigurationException;

import com.cloud.utils.backoff.BackoffFactory;
import org.apache.commons.daemon.Daemon;
import org.apache.commons.daemon.DaemonContext;
import org.apache.commons.daemon.DaemonInitException;
Expand All @@ -52,7 +53,6 @@
import com.cloud.utils.ProcessUtil;
import com.cloud.utils.PropertiesUtil;
import com.cloud.utils.backoff.BackoffAlgorithm;
import com.cloud.utils.backoff.impl.ConstantTimeBackoff;
import com.cloud.utils.exception.CloudRuntimeException;

public class AgentShell implements IAgentShell, Daemon {
Expand Down Expand Up @@ -95,6 +95,16 @@ public BackoffAlgorithm getBackoffAlgorithm() {
return _backoff;
}

@Override
public void setBackoffAlgorithm(BackoffAlgorithm backoffAlgorithm) {
this._backoff = backoffAlgorithm;
try {
backoffAlgorithm.getConfiguration().forEach((key, value) -> setPersistentProperty(null, key, value));
} catch (RuntimeException e) {
LOGGER.warn("Failed to persist backoff properties");
}
}

@Override
public int getPingRetries() {
return _pingRetries;
Expand Down Expand Up @@ -400,7 +410,7 @@ public void init(String[] args) throws ConfigurationException {
final Class<?> c = this.getClass();
_version = c.getPackage().getImplementationVersion();
if (_version == null) {
throw new CloudRuntimeException("Unable to find the implementation version of this agent");
_version = "unknown";
}
LOGGER.info("Implementation Version is {}", _version);

Expand All @@ -410,7 +420,7 @@ public void init(String[] args) throws ConfigurationException {
if (LOGGER.isDebugEnabled()) {
List<String> properties = Collections.list((Enumeration<String>)_properties.propertyNames());
for (String property : properties) {
LOGGER.debug("Found property: {}", property);
LOGGER.debug("Found property: {}, value: {}", property, _properties.getProperty(property));
}
}

Expand All @@ -424,11 +434,15 @@ public void init(String[] args) throws ConfigurationException {
_properties.put(cmdLineProp.getKey(), cmdLineProp.getValue());
}

LOGGER.info("Defaulting to the constant time backoff algorithm");
_backoff = new ConstantTimeBackoff();
Map<String, Object> map = new HashMap<>();
map.put("seconds", _properties.getProperty("backoff.seconds"));
_backoff.configure("ConstantTimeBackoff", map);
try {
LOGGER.info("Creating backoff delay algorithm implementation");
setBackoffAlgorithm(BackoffFactory.create(_properties));
LOGGER.info("Created {} delay algorithm implementation", getBackoffAlgorithm().getClass().getName());
} catch (RuntimeException e) {
String msg = String.format("Failed to create backoff with provided properties %s, failing back to default", _properties);
LOGGER.warn(msg, e);
setBackoffAlgorithm(BackoffFactory.createDefault(_properties));
}
}

private void launchAgent() throws ConfigurationException {
Expand Down Expand Up @@ -546,7 +560,7 @@ public void start() {
}

} catch (final Exception e) {
LOGGER.error("Unable to start agent: ", e);
LOGGER.error("Unable to start agent: {}", e.getLocalizedMessage(), e);
System.exit(ExitStatus.Error.value());
}
}
Expand All @@ -568,6 +582,7 @@ public static void main(String[] args) {
shell.init(args);
shell.start();
} catch (ConfigurationException e) {
LOGGER.fatal(e.getMessage(), e);

@Damans227 Damans227 Jul 21, 2026

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Nit: this now logs the same message twice, LOGGER.fatal here followed by System.out.println right below with the same e.getMessage().

System.out.println(e.getMessage());
}
}
Expand Down
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