CreateActivity() [2/4]

Activity System.Diagnostics.ActivitySource.CreateActivity ( string name, ActivityKind kind, ActivityContext context, string parentId, IEnumerable< KeyValuePair< string, object > > tags, IEnumerable< ActivityLink > links, DateTimeOffset startTime, bool startIt = true, ActivityIdFormat idFormat = ActivityIdFormat::Unknown )

inlineprivate

Definition at line 93 of file ActivitySource.cs.

    {
        SynchronizedList<ActivityListener> listeners = _listeners;
        if (listeners == null || listeners.Count == 0)
        {
            return null;
        }
        Activity result2 = null;
        ActivitySamplingResult samplingResult = ActivitySamplingResult.None;
        ActivityTagsCollection activityTagsCollection;
        if (parentId != null)
        {
            ActivityCreationOptions<string> activityCreationOptions = default(ActivityCreationOptions<string>);
            ActivityCreationOptions<ActivityContext> dataWithContext2 = default(ActivityCreationOptions<ActivityContext>);
            activityCreationOptions = new ActivityCreationOptions<string>(this, name, parentId, kind, tags, links, idFormat);
            if (activityCreationOptions.IdFormat == ActivityIdFormat.W3C)
            {
                dataWithContext2 = new ActivityCreationOptions<ActivityContext>(this, name, activityCreationOptions.GetContext(), kind, tags, links, ActivityIdFormat.W3C);
            }
            listeners.EnumWithFunc(delegate(ActivityListener listener, ref ActivityCreationOptions<string> data, ref ActivitySamplingResult result, ref ActivityCreationOptions<ActivityContext> dataWithContext)
            {
                SampleActivity<string> sampleUsingParentId = listener.SampleUsingParentId;
                if (sampleUsingParentId != null)
                {
                    ActivitySamplingResult activitySamplingResult2 = sampleUsingParentId(ref data);
                    if (activitySamplingResult2 > result)
                    {
                        result = activitySamplingResult2;
                    }
                }
                else if (data.IdFormat == ActivityIdFormat.W3C)
                {
                    SampleActivity<ActivityContext> sample2 = listener.Sample;
                    if (sample2 != null)
                    {
                        ActivitySamplingResult activitySamplingResult3 = sample2(ref dataWithContext);
                        if (activitySamplingResult3 > result)
                        {
                            result = activitySamplingResult3;
                        }
                    }
                }
            }, ref activityCreationOptions, ref samplingResult, ref dataWithContext2);
            if (context == default(ActivityContext))
            {
                if (activityCreationOptions.GetContext() != default(ActivityContext))
                {
                    context = activityCreationOptions.GetContext();
                    parentId = null;
                }
                else if (dataWithContext2.GetContext() != default(ActivityContext))
                {
                    context = dataWithContext2.GetContext();
                    parentId = null;
                }
            }
            activityTagsCollection = activityCreationOptions.GetSamplingTags();
            ActivityTagsCollection samplingTags = dataWithContext2.GetSamplingTags();
            if (samplingTags != null)
            {
                if (activityTagsCollection == null)
                {
                    activityTagsCollection = samplingTags;
                }
                else
                {
                    foreach (KeyValuePair<string, object?> item in samplingTags)
                    {
                        activityTagsCollection.Add(item);
                    }
                }
            }
            idFormat = activityCreationOptions.IdFormat;
        }
        else
        {
            bool flag = context == default(ActivityContext) && Activity.Current != null;
            ActivityCreationOptions<ActivityContext> data2 = new ActivityCreationOptions<ActivityContext>(this, name, flag ? Activity.Current.Context : context, kind, tags, links, idFormat);
            listeners.EnumWithFunc(delegate(ActivityListener listener, ref ActivityCreationOptions<ActivityContext> data, ref ActivitySamplingResult result, ref ActivityCreationOptions<ActivityContext> unused)
            {
                SampleActivity<ActivityContext> sample = listener.Sample;
                if (sample != null)
                {
                    ActivitySamplingResult activitySamplingResult = sample(ref data);
                    if (activitySamplingResult > result)
                    {
                        result = activitySamplingResult;
                    }
                }
            }, ref data2, ref samplingResult, ref data2);
            if (!flag)
            {
                context = data2.GetContext();
            }
            activityTagsCollection = data2.GetSamplingTags();
            idFormat = data2.IdFormat;
        }
        if (samplingResult != 0)
        {
            result2 = Activity.Create(this, name, kind, parentId, context, tags, links, startTime, activityTagsCollection, samplingResult, startIt, idFormat);
        }
        return result2;
    }

References System.Diagnostics.ActivitySource._listeners, System.Collections.Generic.Dictionary< TKey, TValue >.Add(), System.Collections.Generic.Dictionary< TKey, TValue >.Count, System.Diagnostics.Activity.Create(), System.Diagnostics.Activity.Current, System.item, System.Diagnostics.ActivityListener.Sample, and System.Diagnostics.ActivityListener.SampleUsingParentId.