async Task IEngineDescriptorManagerEventHandler.Changed(EngineDescriptor descriptor, string tenant)
{
var engineState = await _stateManager.GetEngineStateAsync();
foreach (var feature in descriptor.Features)
{
var featureId = feature.Id;
var featureState = engineState.Features.SingleOrDefault(f => f.Id == featureId);
if (featureState == null)
{
featureState = new EngineFeatureState
{
Id = featureId
};
}
if (!featureState.IsInstalled)
{
await _stateManager.UpdateInstalledStateAsync(featureState, EngineFeatureState.States.Rising);
}
if (!featureState.IsEnabled)
{
await _stateManager.UpdateEnabledStateAsync(featureState, EngineFeatureState.States.Rising);
}
}
foreach (var featureState in engineState.Features)
{
var featureId = featureState.Id;
if (descriptor.Features.Any(f => f.Id == featureId))
{
continue;
}
if (!featureState.IsDisabled)
{
await _stateManager.UpdateEnabledStateAsync(featureState, EngineFeatureState.States.Falling);
}
}
FireApplyChangesIfNeeded();
}
public async Task ApplyChanges()
{
if (Logger.IsEnabled(LogLevel.Information))
{
Logger.LogInformation("Applying changes for for tenant '{TenantName}'", _settings.Name);
}
var loadedFeatures = await _pluginManager.LoadFeaturesAsync();
var engineState = await _stateManager.GetEngineStateAsync();
var loadedEntries = loadedFeatures
.Select(fe => new
{
Feature = fe,
FeatureDescriptor = fe.FeatureInfo,
FeatureState = engineState.Features.FirstOrDefault(s => s.Id == fe.FeatureInfo.Id),
})
.Where(entry => entry.FeatureState != null)
.ToArray();
var additionalState = engineState.Features.Except(loadedEntries.Select(entry => entry.FeatureState));
var allEntries = loadedEntries.Concat(additionalState.Select(featureState =>
{
var featureDescriptor = new InternalFeatureInfo(
featureState.Id,
new InternalPluginInfo(featureState.Id)
);
return(new
{
Feature = (FeatureEntry) new NonCompiledFeatureEntry(featureDescriptor),
FeatureDescriptor = (IFeatureInfo)featureDescriptor,
FeatureState = featureState
});
})).ToArray();
foreach (var entry in allEntries.Reverse().Where(entry => entry.FeatureState.EnableState == EngineFeatureState.States.Falling))
{
if (Logger.IsEnabled(LogLevel.Information))
{
Logger.LogInformation("Disabling feature '{FeatureName}'", entry.Feature.FeatureInfo.Id);
}
_featureEventHandlers.Invoke(x => x.Disabling(entry.Feature.FeatureInfo), Logger);
await _stateManager.UpdateEnabledStateAsync(entry.FeatureState, EngineFeatureState.States.Down);
_featureEventHandlers.Invoke(x => x.Disabled(entry.Feature.FeatureInfo), Logger);
}
foreach (var entry in allEntries.Reverse().Where(entry => entry.FeatureState.InstallState == EngineFeatureState.States.Falling))
{
if (Logger.IsEnabled(LogLevel.Information))
{
Logger.LogInformation("Uninstalling feature '{FeatureName}'", entry.Feature.FeatureInfo.Id);
}
_featureEventHandlers.Invoke(x => x.Uninstalling(entry.Feature.FeatureInfo), Logger);
await _stateManager.UpdateInstalledStateAsync(entry.FeatureState, EngineFeatureState.States.Down);
_featureEventHandlers.Invoke(x => x.Uninstalled(entry.Feature.FeatureInfo), Logger);
}
foreach (var entry in allEntries.Where(entry => IsRising(entry.FeatureState)))
{
if (entry.FeatureState.InstallState == EngineFeatureState.States.Rising)
{
if (Logger.IsEnabled(LogLevel.Information))
{
Logger.LogInformation("Installing feature '{FeatureName}'", entry.Feature.FeatureInfo.Id);
}
_featureEventHandlers.Invoke(x => x.Installing(entry.Feature.FeatureInfo), Logger);
await _stateManager.UpdateInstalledStateAsync(entry.FeatureState, EngineFeatureState.States.Up);
_featureEventHandlers.Invoke(x => x.Installed(entry.Feature.FeatureInfo), Logger);
}
if (entry.FeatureState.EnableState == EngineFeatureState.States.Rising)
{
if (Logger.IsEnabled(LogLevel.Information))
{
Logger.LogInformation("Enabling feature '{FeatureName}'", entry.Feature.FeatureInfo.Id);
}
_featureEventHandlers.Invoke(x => x.Enabling(entry.Feature.FeatureInfo), Logger);
await _stateManager.UpdateEnabledStateAsync(entry.FeatureState, EngineFeatureState.States.Up);
_featureEventHandlers.Invoke(x => x.Enabled(entry.Feature.FeatureInfo), Logger);
}
}
}