internal static RepositoryDescription FromJson(JObject json, TraceContext trace, Uri documentRoot)
{
Guard.NotNull(json, "json");
Guard.NotNull(trace, "trace");
using (trace.EnterExit())
{
// Read the version field
int majorVersion = 0;
var majorVersionToken = json["version"];
if (majorVersionToken != null && majorVersionToken.Type != JTokenType.Null)
{
if (majorVersionToken.Type != JTokenType.Integer)
{
trace.JsonParseWarning(
majorVersionToken,
String.Format(CultureInfo.CurrentCulture, Strings.RepositoryDescription_InvalidVersion, majorVersionToken.ToDisplayString()));
}
else
{
majorVersion = majorVersionToken.Value <int>();
if (majorVersion < 0)
{
trace.JsonParseWarning(
majorVersionToken,
String.Format(CultureInfo.CurrentCulture, Strings.RepositoryDescription_InvalidVersion, majorVersion));
majorVersion = 0;
}
}
}
else
{
trace.JsonParseWarning(
json,
String.Format(CultureInfo.CurrentCulture, Strings.RepositoryDescription_MissingExpectedProperty, "version"));
}
var version = new Version(majorVersion, 0);
// Read mirrors/alternates
// TODO: Remove old "alternates" name
var mirrorsToken = json["mirrors"] ?? json["alternates"];
IEnumerable <Uri> mirrors;
if (mirrorsToken != null && mirrorsToken.Type != JTokenType.Null)
{
if (mirrorsToken.Type != JTokenType.Array)
{
trace.JsonParseWarning(
mirrorsToken,
String.Format(CultureInfo.CurrentCulture, Strings.RepositoryDescription_InvalidMirrors, mirrorsToken.ToDisplayString()));
mirrors = Enumerable.Empty <Uri>();
}
else
{
mirrors = JsonParsing.ParseUrlArray((JArray)mirrorsToken, trace, documentRoot, Strings.RepositoryDescription_InvalidMirrorUrl);
}
}
else
{
trace.JsonParseWarning(
json,
String.Format(CultureInfo.CurrentCulture, Strings.RepositoryDescription_MissingExpectedProperty, "mirrors"));
mirrors = Enumerable.Empty <Uri>();
}
// Read services
var servicesToken = json["services"];
IEnumerable <ServiceDescription> services;
if (servicesToken != null && servicesToken.Type != JTokenType.Null)
{
if (servicesToken.Type != JTokenType.Object)
{
trace.JsonParseWarning(
mirrorsToken,
String.Format(CultureInfo.CurrentCulture, Strings.RepositoryDescription_InvalidServices, servicesToken.ToDisplayString()));
services = Enumerable.Empty <ServiceDescription>();
}
else
{
services = JsonParsing.ParseUrlDictionary(json.Value <JObject>("services"), trace, documentRoot, Strings.RepositoryDescription_InvalidServiceUrl).Select(pair => new ServiceDescription(pair.Key, pair.Value));
}
}
else
{
trace.JsonParseWarning(
json,
String.Format(CultureInfo.CurrentCulture, Strings.RepositoryDescription_MissingExpectedProperty, "services"));
services = Enumerable.Empty <ServiceDescription>();
}
// Create the object!
return(new RepositoryDescription(version, mirrors, services));
}
}