public async Task <MetricListResponse> GetMetricsAsync(string resourceUri, string filterString, CancellationToken cancellationToken)
{
// Ensure exactly one '/' at the start
resourceUri = '/' + resourceUri.TrimStart('/');
// Generate filter strings
string metricFilter = RemoveNamesFromFilterString(filterString);
string definitionFilter = ShoeboxHelper.GenerateMetricDefinitionFilterString(MetricFilterExpressionParser.Parse(filterString).Names);
// Get definitions for requested metrics
IList <MetricDefinition> definitions =
(await this.Client.MetricDefinitionOperations.GetMetricDefinitionsAsync(
resourceUri,
definitionFilter,
cancellationToken).ConfigureAwait(false)).MetricDefinitionCollection.Value;
// Get Metrics by definitions
return(await this.GetMetricsAsync(resourceUri, metricFilter, definitions, cancellationToken).ConfigureAwait(false));
}
public async Task <MetricListResponse> GetMetricsAsync(string resourceUri, string filterString, CancellationToken cancellationToken)
{
if (resourceUri == null)
{
throw new ArgumentNullException("resourceUri");
}
// Generate filter strings
MetricFilter filter = MetricFilterExpressionParser.Parse(filterString);
string filterStringNamesOnly = filter.DimensionFilters == null ? null
: ShoeboxHelper.GenerateMetricDefinitionFilterString(filter.DimensionFilters.Select(df => df.Name));
// Get definitions for requested metrics
IList <MetricDefinition> definitions =
(await this.Client.MetricDefinitionOperations.GetMetricDefinitionsAsync(
resourceUri,
filterStringNamesOnly,
cancellationToken).ConfigureAwait(false)).MetricDefinitionCollection.Value;
// Get Metrics with definitions
return(await this.GetMetricsAsync(resourceUri, filterString, definitions, cancellationToken));
}
public async Task <MetricListResponse> GetMetricsAsync(string resourceUri, string filterString, CancellationToken cancellationToken)
{
// Ensure exactly one '/' at the start
resourceUri = '/' + resourceUri.TrimStart('/');
// Generate filter strings
MetricFilter filter = MetricFilterExpressionParser.Parse(filterString);
string metricFilterString = GenerateNamelessMetricFilterString(filter);
string definitionFilterString = filter.DimensionFilters == null ? null
: ShoeboxHelper.GenerateMetricDefinitionFilterString(filter.DimensionFilters.Select(df => df.Name));
// Get definitions for requested metrics
IList <MetricDefinition> definitions =
(await this.Client.MetricDefinitionOperations.GetMetricDefinitionsAsync(
resourceUri,
definitionFilterString,
cancellationToken).ConfigureAwait(false)).MetricDefinitionCollection.Value;
// Separate passthrough metrics with dimensions specified
IEnumerable <MetricDefinition> passthruDefinitions = definitions.Where(d => !IsShoebox(d, filter.TimeGrain));
IEnumerable <MetricDefinition> shoeboxDefinitions = definitions.Where(d => IsShoebox(d, filter.TimeGrain));
// Get Passthru definitions
List <Metric> passthruMetrics = new List <Metric>();
string invocationId = TracingAdapter.NextInvocationId.ToString(CultureInfo.InvariantCulture);
this.LogStartGetMetrics(invocationId, resourceUri, filterString, passthruDefinitions);
if (passthruDefinitions.Any())
{
// Create new filter for passthru metrics
List <MetricDimension> passthruDimensionFilters = filter.DimensionFilters == null ? new List <MetricDimension>() :
filter.DimensionFilters.Where(df => passthruDefinitions.Any(d => string.Equals(d.Name.Value, df.Name, StringComparison.OrdinalIgnoreCase))).ToList();
foreach (MetricDefinition def in passthruDefinitions
.Where(d => !passthruDimensionFilters.Any(pdf => string.Equals(pdf.Name, d.Name.Value, StringComparison.OrdinalIgnoreCase))))
{
passthruDimensionFilters.Add(new MetricDimension()
{
Name = def.Name.Value
});
}
MetricFilter passthruFilter = new MetricFilter()
{
TimeGrain = filter.TimeGrain,
StartTime = filter.StartTime,
EndTime = filter.EndTime,
DimensionFilters = passthruDimensionFilters
};
// Create passthru filter string
string passthruFilterString = ShoeboxHelper.GenerateMetricFilterString(passthruFilter);
// Get Metrics from passthrough (hydra) client
MetricListResponse passthruResponse = await this.GetMetricsInternalAsync(resourceUri, passthruFilterString, cancellationToken).ConfigureAwait(false);
passthruMetrics = passthruResponse.MetricCollection.Value.ToList();
this.LogMetricCountFromResponses(invocationId, passthruMetrics.Count());
// Fill in values (resourceUri, displayName, unit) from definitions
CompleteShoeboxMetrics(passthruMetrics, passthruDefinitions, resourceUri);
// Add empty objects for metrics that had no values come back, ensuring a metric is returned for each definition
IEnumerable <Metric> emptyMetrics = passthruDefinitions
.Where(d => !passthruMetrics.Any(m => string.Equals(m.Name.Value, d.Name.Value, StringComparison.OrdinalIgnoreCase)))
.Select(d => new Metric()
{
Name = d.Name,
Unit = d.Unit,
ResourceId = resourceUri,
StartTime = filter.StartTime,
EndTime = filter.EndTime,
TimeGrain = filter.TimeGrain,
MetricValues = new List <MetricValue>(),
Properties = new Dictionary <string, string>()
});
passthruMetrics.AddRange(emptyMetrics);
}
// Get Metrics by definitions
MetricListResponse shoeboxResponse = await this.GetMetricsAsync(resourceUri, metricFilterString, shoeboxDefinitions, cancellationToken).ConfigureAwait(false);
// Create response (merge and wrap metrics)
MetricListResponse result = new MetricListResponse()
{
RequestId = Guid.NewGuid().ToString("D"),
StatusCode = HttpStatusCode.OK,
MetricCollection = new MetricCollection()
{
Value = passthruMetrics.Union(shoeboxResponse.MetricCollection.Value).ToList()
}
};
this.LogEndGetMetrics(invocationId, result);
return(result);
}
public async Task <MetricDefinitionListResponse> GetMetricDefinitionsAsync(string resourceUri, string filterString, CancellationToken cancellationToken)
{
MetricDefinitionListResponse result;
string invocationId = Tracing.NextInvocationId.ToString(CultureInfo.InvariantCulture);
this.LogStartGetMetricDefinitions(invocationId, resourceUri, filterString);
// Ensure exactly one '/' at the start
resourceUri = '/' + resourceUri.TrimStart('/');
IEnumerable <MetricDefinition> definitions;
// If no filter string, must request all metric definiitons since we don't know if we have them all
if (string.IsNullOrWhiteSpace(filterString))
{
// request all definitions
definitions = (await this.GetMetricDefinitionsInternalAsync(resourceUri, string.Empty, CancellationToken.None).ConfigureAwait(false))
.MetricDefinitionCollection.Value;
// cache definitions
this.Client.Cache[resourceUri] = definitions;
// wrap and return definitions
result = new MetricDefinitionListResponse()
{
StatusCode = HttpStatusCode.OK,
MetricDefinitionCollection = new MetricDefinitionCollection()
{
Value = definitions.ToList()
}
};
this.LogEndGetMetricDefinitions(invocationId, result);
return(result);
}
// Parse the filter and retrieve cached definitions
IEnumerable <string> names = MetricDefinitionFilterParser.Parse(filterString);
definitions = this.Client.Cache[resourceUri];
// Find the names in the filter that don't appear on any of the cached definitions
IEnumerable <string> missing = definitions == null
? names
: names.Where((n => !definitions.Any(d => string.Equals(d.Name.Value, n, StringComparison.OrdinalIgnoreCase))));
// Request any missing definitions and update cache (if any)
if (missing.Any())
{
string missingFilter = ShoeboxHelper.GenerateMetricDefinitionFilterString(missing);
// Request missing definitions
var missingDefinitions = (await this.GetMetricDefinitionsInternalAsync(resourceUri, missingFilter, cancellationToken).ConfigureAwait(false))
.MetricDefinitionCollection.Value;
// merge definitions
definitions = (definitions ?? new MetricDefinition[0]).Union(missingDefinitions);
// Store the new set of definitions
this.Client.Cache[resourceUri] = definitions;
}
// Filter out the metrics that were cached but not requested and wrap
result = new MetricDefinitionListResponse()
{
StatusCode = HttpStatusCode.OK,
MetricDefinitionCollection = new MetricDefinitionCollection()
{
Value = definitions.Where(d => names.Contains(d.Name.Value)).ToList()
}
};
this.LogEndGetMetricDefinitions(invocationId, result);
return(result);
}