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MetricsHub Monitoring Engine
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package org.sentrysoftware.metricshub.engine.telemetry;
/*-
* ╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲
* MetricsHub Engine
* ჻჻჻჻჻჻
* Copyright 2023 - 2024 Sentry Software
* ჻჻჻჻჻჻
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see > monitors = new HashMap<>();
@Default
private HostProperties hostProperties = new HostProperties();
private HostConfiguration hostConfiguration;
private ConnectorStore connectorStore;
private Long strategyTime;
/**
* Executes the given {@link IStrategy} instances.
*
* @param strategies The {@link IStrategy} instances to be executed.
*
*/
@WithSpan
public synchronized void run(@SpanAttribute("telemetrymanager.strategies") final IStrategy... strategies) {
final String hostname = hostConfiguration.getHostname();
log.trace("Hostname {} - Engine called for thread {}.", hostname, Thread.currentThread().getName());
for (IStrategy strategy : strategies) {
final String strategyType = strategy.getClass().getSimpleName();
log.trace("Hostname {} - Calling strategy {}.", hostname, strategyType);
runStrategy(strategy);
log.info("Hostname {} - End of strategy {}.", hostname, strategyType);
if (log.isDebugEnabled()) {
log.debug("Hostname {} - >>> {} >>>\n{}", hostname, strategy.getClass().getSimpleName(), toJson());
}
}
}
/**
* Run the given strategy and manage triggered exceptions
*
* @param strategy Any implementation of the {@link IStrategy} interface
*/
void runStrategy(final IStrategy strategy) {
final String hostname = hostConfiguration.getHostname();
strategyTime = strategy.getStrategyTime();
try {
new ContextExecutor(strategy).execute();
} catch (ExecutionException e) {
log.error(
"Hostname {} - {} operation failed: {}: {}.",
hostname,
strategy.getClass().getSimpleName(),
e.getClass().getSimpleName(),
e.getMessage()
);
log.debug("Hostname {} - Operation failed with ExecutionException.", hostname, e);
} catch (TimeoutException e) {
log.error("Hostname {} - {} operation timed out.", hostname, strategy.getClass().getSimpleName());
log.debug("Hostname {} - Operation failed with TimeoutException: ", hostname, e);
} catch (InterruptedException e) {
log.error("Hostname {} - {} operation interrupted.", hostname, strategy.getClass().getSimpleName());
log.debug("Hostname {} - Operation failed with InterruptedException: ", hostname, e);
Thread.currentThread().interrupt();
} catch (Throwable e) { // NOSONAR
log.error(
"Hostname {} - {} operation failed with {}.",
hostname,
strategy.getClass().getSimpleName(),
e.getClass().getSimpleName()
);
log.debug("Hostname {} - Operation failed with exception: ", hostname, e);
}
}
/**
* Convert monitors to JSON format
* @return {@link String} value
*/
public String toJson() {
final MonitorsVo hostMonitoringVo = getVo();
return JsonHelper.serialize(hostMonitoringVo);
}
/**
* Get the current monitors as {@link MonitorsVo}
*
* @return {@link MonitorsVo} object
*/
public MonitorsVo getVo() {
final MonitorsVo monitorsVo = new MonitorsVo();
final List monitorTypes = new ArrayList<>(monitors.keySet());
monitorTypes
.stream()
.sorted()
.filter(monitorType -> {
final Map monitorsMap = monitors.get(monitorType);
return monitorsMap != null && monitorsMap.values() != null;
})
.forEach(monitorType -> {
final List monitorList = new ArrayList<>(monitors.get(monitorType).values());
Collections.sort(monitorList, Comparator.comparing(Monitor::getId));
monitorsVo.addAll(monitorList);
});
return monitorsVo;
}
/**
* Finds a monitor using its type and its id attribute
* @param type monitor's type
* @param id monitor's id
* @return Monitor instance
*/
public Monitor findMonitorByTypeAndId(final String type, final String id) {
final Map findMonitorByTypeResult = findMonitorsByType(type);
if (findMonitorByTypeResult != null) {
return findMonitorById(id, findMonitorByTypeResult);
}
return null;
}
/**
* Finds a monitor using its id attribute
* @param id monitorId
* @param monitorsMap a map of monitors having the same type
* @return {@link Monitor} instance
*/
public Monitor findMonitorById(final String id, final Map monitorsMap) {
return monitorsMap.get(id);
}
/**
* Finds a monitor using its type
*
* @param type type of the monitor. E.g. host, enclosure, network, etc.
* @return {@link Monitor} instance
*/
public Map findMonitorsByType(final String type) {
return this.getMonitors() == null ? null : this.getMonitors().get(type);
}
/**
* Add a new monitor instance
*
* @param monitor Monitor instance we wish to add
* @param monitorType The type of the monitor
* @param id The monitor's identifier
* @return added {@link Monitor} instance
*/
public Monitor addNewMonitor(
@NonNull final Monitor monitor,
@NonNull final String monitorType,
@NonNull final String id
) {
synchronized (monitors) {
monitors.computeIfAbsent(monitorType, t -> new HashMap<>()).put(id, monitor);
return monitor;
}
}
/**
* Return the root host monitor instance
*
* @return {@link Monitor} object representing the root instance
*/
public Monitor getEndpointHostMonitor() {
// Get host monitors
final Map hostMonitors = findMonitorsByType(HOST.getKey());
if (hostMonitors == null) {
return null;
}
// Get the endpoint host
return hostMonitors.values().stream().filter(Monitor::isEndpoint).findFirst().orElse(null);
}
/**
* Return the configured hostname
*
* @return {@link String} value
*/
public String getHostname() {
return hostConfiguration.getHostname();
}
/**
* This method finds the parent of a given monitor
* @param monitor a given monitor
* @return the parent monitor which is a {@link Monitor} instance
*/
public Monitor findParentMonitor(final Monitor monitor) {
final String hwParentId = monitor.getAttribute("hw.parent.id");
final String hwParentType = monitor.getAttribute("hw.parent.type");
if (hwParentType != null && hwParentId != null) {
Optional> sameTypeMonitors = Optional.ofNullable(findMonitorsByType(hwParentType));
if (sameTypeMonitors.isPresent()) {
final Optional parentMonitor = sameTypeMonitors
.get()
.entrySet()
.stream()
.filter(entry -> hwParentId.equals(entry.getValue().getAttribute(MetricsHubConstants.MONITOR_ATTRIBUTE_ID)))
.map(Map.Entry::getValue)
.findFirst();
if (parentMonitor.isPresent()) {
return parentMonitor.get();
}
}
}
log.warn("Monitor {} does not have a parent on Host {}", monitor.getId(), getHostname());
return null;
}
/**
* This method finds a monitor having a given id regardless of its type
* @param monitorId monitor id
* @return {@link Monitor}
*/
public Monitor findMonitorById(final String monitorId) {
return getMonitors()
.values()
.stream()
.map(monitorsMap -> monitorsMap.get(monitorId))
.filter(Objects::nonNull)
.findFirst()
.orElse(null);
}
/**
* This method checks whether a connector status was set to "ok"
* @param currentMonitor the current monitor
* @return boolean whether the connector status is ok
*/
public boolean isConnectorStatusOk(final Monitor currentMonitor) {
if (currentMonitor.isEndpointHost()) {
return true;
}
final String connectorId = currentMonitor.getAttribute(MetricsHubConstants.MONITOR_ATTRIBUTE_CONNECTOR_ID);
return null != connectorId && hostProperties.getConnectorNamespace(connectorId).isStatusOk();
}
/**
* Retrieves the hostname from the provided list of configuration classes, considering the order of the list.
*
* This method searches through the user's configurations, as specified by the list of `IConfiguration` classes,
* to find and return the first non-null hostname. The order of the configurations in the list is significant.
* For example, calling `getHostname(SshConfiguration.class, OsCommandConfiguration.class)` may yield a different
* result compared to `getHostname(OsCommandConfiguration.class, SshConfiguration.class)` if both configurations exist.
*
* If the list of configurations is empty or none of the configurations provide a non-null hostname, the method
* will return the telemetry manager's hostname as a fallback.
*
* @param configurations A list of `IConfiguration` classes to search for the hostname.
* @return the first non-null hostname from the provided configurations, or the telemetry manager's hostname if none are found.
*/
public String getHostname(List> configurations) {
return configurations
.stream()
.map(config -> hostConfiguration.getConfigurations().get(config)) // Get the configuration from the user's configuration map
.filter(Objects::nonNull) // Filter out null configurations
.map(IConfiguration::getHostname) // Map to hostname
.filter(Objects::nonNull) // Filter out null hostnames
.findFirst() // Get the first matching hostname
.orElse(getHostname()); // Fallback to telemetry manager hostname
}
/**
* Retrieves a map of {@link EmbeddedFile} objects indexed by their unique integer identifiers, associated
* with a specific connector identified by {@code connectorId}.
* @param connectorId The unique identifier of the connector whose embedded files are to be retrieved.
* @return A non-null {@link Map} of integer IDs to {@link EmbeddedFile} instances.
*/
public Map getEmbeddedFiles(final String connectorId) {
return connectorStore.getStore().get(connectorId).getEmbeddedFiles();
}
}