///<summary>
/// Gets http dependency url from activity tag objects.
///</summary>
internal static string GetDependencyUrl(this AzMonList tagObjects)
{
// From spec: one of the following combinations is required in case of client spans:
// https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/trace/semantic_conventions/http.md#http-client
// http.url
// http.scheme, http.host, http.target
// http.scheme, net.peer.name, net.peer.port, http.target
// http.scheme, net.peer.ip, net.peer.port, http.target
string url = null;
url = tagObjects.GetUrlUsingHttpUrl();
if (url != null)
{
return(url);
}
var httpScheme = AzMonList.GetTagValue(ref tagObjects, SemanticConventions.AttributeHttpScheme)?.ToString();
if (!string.IsNullOrWhiteSpace(httpScheme))
{
var httpTarget = AzMonList.GetTagValue(ref tagObjects, SemanticConventions.AttributeHttpTarget)?.ToString();
// http.target is required in other three possible combinations
// If not available then do not proceed.
if (string.IsNullOrWhiteSpace(httpTarget))
{
return(null);
}
string defaultPort = GetDefaultHttpPort(httpScheme);
url = tagObjects.GetUrlUsingHttpHost(httpScheme, defaultPort, httpTarget);
if (url != null)
{
return(url);
}
var host = tagObjects.GetHostUsingNetPeerAttributes();
if (!string.IsNullOrWhiteSpace(host))
{
var netPeerPort = AzMonList.GetTagValue(ref tagObjects, SemanticConventions.AttributeNetPeerPort)?.ToString();
if (!string.IsNullOrWhiteSpace(netPeerPort))
{
url = tagObjects.GetUrlUsingHostAndPort(httpScheme, host, netPeerPort, defaultPort, httpTarget);
return(url);
}
}
}
return(url);
}
///<summary>
/// Gets Http dependency target from activity tag objects.
///</summary>
internal static string GetDependencyTarget(this AzMonList tagObjects, PartBType type)
{
string target;
string defaultPort;
switch (type)
{
case PartBType.Http:
defaultPort = GetDefaultHttpPort(AzMonList.GetTagValue(ref tagObjects, SemanticConventions.AttributeHttpScheme)?.ToString());
break;
case PartBType.Db:
defaultPort = GetDefaultDbPort(AzMonList.GetTagValue(ref tagObjects, SemanticConventions.AttributeDbSystem)?.ToString());
break;
default:
defaultPort = "0";
break;
}
var peerService = AzMonList.GetTagValue(ref tagObjects, SemanticConventions.AttributePeerService)?.ToString();
if (!string.IsNullOrEmpty(peerService))
{
target = peerService;
return(target);
}
if (type == PartBType.Http)
{
var httpHost = AzMonList.GetTagValue(ref tagObjects, SemanticConventions.AttributeHttpHost)?.ToString();
if (!string.IsNullOrEmpty(httpHost))
{
string portSection = $":{defaultPort}";
if (httpHost.EndsWith(portSection, StringComparison.OrdinalIgnoreCase))
{
var truncatedHost = httpHost.Substring(0, httpHost.IndexOf(portSection, StringComparison.OrdinalIgnoreCase));
target = truncatedHost;
}
else
{
target = httpHost;
}
return(target);
}
var httpUrl = AzMonList.GetTagValue(ref tagObjects, SemanticConventions.AttributeHttpUrl)?.ToString();
if (!string.IsNullOrEmpty(httpUrl) && Uri.TryCreate(httpUrl.ToString(), UriKind.RelativeOrAbsolute, out var uri) && uri.IsAbsoluteUri)
{
target = uri.Authority;
if (!string.IsNullOrEmpty(target))
{
return(target);
}
}
}
target = tagObjects.GetHostUsingNetPeerAttributes();
if (!string.IsNullOrEmpty(target))
{
var netPeerPort = AzMonList.GetTagValue(ref tagObjects, SemanticConventions.AttributeNetPeerPort)?.ToString();
if (!string.IsNullOrEmpty(netPeerPort) && netPeerPort != defaultPort)
{
target = $"{target}:{netPeerPort}";
}
return(target);
}
return(target);
}