private async Task <IReadOnlyDictionary <StampId, DynamicStampProperties> > LoadWatchlistAsync()
{
var query = @"CacheMonitorWatchlist";
var watchlist = new Dictionary <StampId, DynamicStampProperties>();
// This runs a set of blocking Kusto queries, which is pretty slow, so it's done concurrently
await _environments.ParallelForEachAsync(async (keyValuePair) => {
var envName = keyValuePair.Key;
var envConf = keyValuePair.Value;
var envKusto = _kustoClients[envName];
_logger.Info("Loading monitor stamps for environment `{0}`", envName);
var results = await envKusto.QueryAsync <DynamicStampProperties>(query, envConf.KustoDatabaseName);
foreach (var result in results)
{
Contract.AssertNotNullOrEmpty(result.Stamp);
Contract.AssertNotNullOrEmpty(result.Ring);
Contract.AssertNotNullOrEmpty(result.CacheTableName);
var entry = new StampId(envName, result.Stamp);
lock (watchlist) {
watchlist[entry] = result;
}
_logger.Debug("Monitoring stamp `{0}` on ring `{1}` from table `{2}` in environment `{3}`", result.Stamp, result.Ring, result.CacheTableName, envName);
}
});
return(watchlist);
}
public Result <DynamicStampProperties> TryGetProperties(StampId stampId)
{
if (_properties.TryGetValue(stampId, out var properties))
{
return(properties);
}
return(new Result <DynamicStampProperties>(errorMessage: $"Unknown stamp {stampId}"));
}
