private IEnumerable <IPackage> SearchPackagesWithBackup(string baseUrl, HttpQueryBuilder qb, RequestWrapper request, NuGetSearchContext searchContext, NuGetSearchTerm searchTerm)
{
// First execute the actual search
HashSet <string> foundPackageIds = new HashSet <string>();
return(NuGetWebUtility.GetResults <dynamic, PackageBase>(request, (dynamic root) =>
{
long res = -1;
if (root.HasProperty("totalhits"))
{
res = root.totalhits;
request.Debug(Resources.Messages.TotalPackagesDiscovered, res);
}
else
{
request.Warning(Resources.Messages.JsonSchemaMismatch, "totalhits");
request.Debug(Resources.Messages.JsonObjectDump, DynamicJsonParser.Serialize(root));
}
return res;
}, (dynamic root) => GetPackageCollectionsForSearchResult(root, searchContext, searchTerm, foundPackageIds, request), (long packagesToSkip) =>
{
if (packagesToSkip > 0)
{
HttpQueryBuilder currentQb = qb.CloneAdd(Constants.SkipQueryParam, packagesToSkip.ToString());
return currentQb.AddQueryString(baseUrl);
}
return qb.AddQueryString(baseUrl);
}, (string content) =>
{
return DynamicJsonParser.Parse(content);
}, Constants.SearchPageCountInt));
}
public IEnumerable <string> Autocomplete(NuGetSearchTerm autocompleteSearchTerm, RequestWrapper request, WildcardPattern acceptedPattern, bool allowPrerelease)
{
try
{
request.Debug(Messages.DebugInfoCallMethod3, "NuGetAutoCompleteFeed3", "Autocomplete", autocompleteSearchTerm.ToString());
return(base.Execute <IEnumerable <string> >((baseUrl) =>
{
HttpQueryBuilder qb = new HttpQueryBuilder();
if (autocompleteSearchTerm.Term == NuGetSearchTerm.NuGetSearchTermType.Id)
{
qb.Add(Constants.PackageIdQueryParam, autocompleteSearchTerm.Text);
}
else if (autocompleteSearchTerm.Term == NuGetSearchTerm.NuGetSearchTermType.AutoComplete)
{
qb.Add(Constants.QueryQueryParam, autocompleteSearchTerm.Text);
}
if (allowPrerelease)
{
qb.Add(Constants.PrereleaseQueryParam, "true");
}
qb.Add(Constants.TakeQueryParam, Constants.SearchPageCount)
.Add(Constants.SemVerLevelQueryParam, Constants.SemVerLevel2);
return NuGetWebUtility.GetResults <dynamic, string>(request, (dynamic root) =>
{
long res = -1;
if (root.HasProperty("totalhits"))
{
res = root.totalhits;
request.Debug(Resources.Messages.TotalPackagesDiscovered, res);
}
else
{
request.Warning(Resources.Messages.JsonSchemaMismatch, "totalhits");
request.Debug(Resources.Messages.JsonObjectDump, DynamicJsonParser.Serialize(root));
}
return res;
}, (dynamic root) => GetAutoCompleteResults(root, autocompleteSearchTerm, acceptedPattern), (long resultsToSkip) =>
{
if (resultsToSkip > 0)
{
HttpQueryBuilder currentQb = qb.CloneAdd(Constants.SkipQueryParam, resultsToSkip.ToString());
return currentQb.AddQueryString(baseUrl);
}
return qb.AddQueryString(baseUrl);
}, (string content) =>
{
return DynamicJsonParser.Parse(content);
}, Constants.SearchPageCountInt);
}));
}
finally
{
request.Debug(Messages.DebugInfoReturnCall, "NuGetAutoCompleteFeed3", "Autocomplete");
}
}
/// <summary>
/// Find packages when the registration URL is already known.
/// </summary>
/// <param name="registrationUrl"></param>
/// <param name="request"></param>
/// <returns></returns>
internal IEnumerable <PackageBase> Find(string registrationUrl, NuGetSearchContext context, RequestWrapper request, bool finalAttempt)
{
request.Debug(Messages.DebugInfoCallMethod3, "NuGetPackageFeed3", "Find", registrationUrl);
List <PackageBase> packages = null;
PackageBase cachedPackage;
if (!registrationUrl.Contains("index.json") && ConcurrentInMemoryCache.Instance.TryGet <PackageBase>(registrationUrl, out cachedPackage))
{
if (cachedPackage == null)
{
return(packages);
}
else
{
packages = new List <PackageBase>()
{
cachedPackage
};
return(packages);
}
}
Stream s = NuGetClient.DownloadDataToStream(registrationUrl, request, ignoreNullResponse: true, tries: 1);
if (s != null)
{
packages = new List <PackageBase>();
// Now we can get the catalog entry
dynamic root = DynamicJsonParser.Parse(new StreamReader(s).ReadToEnd());
if (root.Metadata.HasProperty("type"))
{
// First check if this is a Package or PackageRegistration type
// Package is from packageId + version
// PackageRegistration is from packageId
bool isRegistrationType = false;
foreach (string t in root.Metadata.type)
{
if (t.Equals("PackageRegistration", StringComparison.OrdinalIgnoreCase))
{
isRegistrationType = true;
break;
}
}
if (context.PackageInfo.AllVersions.Count == 0)
{
// Only when the version list is restricted is this method usually faster
this.ResourcesCollection.FilesFeed.GetVersionInfo(context.PackageInfo, request);
}
HashSet <SemanticVersion> packageSemanticVersions = null;
if (context.PackageInfo.AllVersions.Count > 0)
{
packageSemanticVersions = FilterVersionsByRequirements(context, context.PackageInfo);
}
if (isRegistrationType)
{
// This is a registration index, like: "https://api.nuget.org/v3/registration3/json/index.json"
// Get all versions from files service
// In addition, when DeepMetadataBypass is enabled, we MUST use the registration index to get package info
// If a call to -Name -RequiredVersion is done, DeepMetadataBypass will never be enabled (for now)
// If we wanted, we could enable this by checking if !isRegistrationType && context.EnableDeepMetadataBypass, then call into Find with the registration index URL
if (!context.AllVersions && packageSemanticVersions != null && !context.EnableDeepMetadataBypass)
{
foreach (SemanticVersion packageVersion in packageSemanticVersions)
{
NuGetSearchResult result = this.ResourcesCollection.PackagesFeed.Find(new NuGetSearchContext()
{
PackageInfo = context.PackageInfo,
RequiredVersion = packageVersion,
EnableDeepMetadataBypass = context.EnableDeepMetadataBypass
}, request);
PackageBase package = result.Result == null ? null : result.Result.FirstOrDefault() as PackageBase;
if (package != null)
{
packages.Add(package);
}
}
}
else
{
// Going to collect versions from the registration index in here
// Map of package version -> either PackageBase (if context.EnableDeepMetadataBypass) or catalog URL
Dictionary <SemanticVersion, object> catalogObjects = new Dictionary <SemanticVersion, object>();
// If the version list hasn't been built yet, we can build it from the registration page instead of using FilesFeed
bool buildPackageInfoVersions = context.PackageInfo.AllVersions.Count == 0;
// Fallback to catalog crawling in these cases:
// - Bypass deep metadata
// - Getting version list failed
// - All versions required
foreach (dynamic catalogPage in root.items)
{
dynamic actualCatalogPage = catalogPage;
if (!actualCatalogPage.HasProperty("items"))
{
// Sometimes the catalog page on the PackageRegistration entry doesn't have the actual page contents
// In this case, the ID metadata tag points to the full catalog entry
Stream fullCatalogPageResponseStream = NuGetClient.DownloadDataToStream(actualCatalogPage.Metadata.id, request);
if (fullCatalogPageResponseStream != null)
{
actualCatalogPage = DynamicJsonParser.Parse(new StreamReader(fullCatalogPageResponseStream).ReadToEnd());
}
}
foreach (dynamic packageEntry in actualCatalogPage.items)
{
SemanticVersion version = new SemanticVersion(packageEntry.catalogentry.version);
if (buildPackageInfoVersions)
{
context.PackageInfo.AddVersion(version);
}
bool hasCatalogEntry = packageEntry.HasProperty("catalogentry");
if (context.EnableDeepMetadataBypass || !hasCatalogEntry)
{
// Bypass retrieving "deep" (but required) metadata like packageHash
// Also do this if there's no catalog entry
PackageBase pb = null;
if (packageEntry.HasProperty("catalogentry"))
{
pb = this.ResourcesCollection.PackageConverter.Make(packageEntry.catalogentry, context.PackageInfo);
}
else
{
// In some implementations (lookin' at you MyGet) there's no catalogEntry object
pb = this.ResourcesCollection.PackageConverter.Make(packageEntry, context.PackageInfo);
}
if (pb != null)
{
catalogObjects[version] = pb;
}
}
else
{
catalogObjects[version] = this.ResourcesCollection.CatalogUrlConverter.Make(packageEntry);
}
}
}
packageSemanticVersions = FilterVersionsByRequirements(context, context.PackageInfo);
foreach (SemanticVersion version in packageSemanticVersions)
{
if (!catalogObjects.ContainsKey(version))
{
continue;
}
if (context.EnableDeepMetadataBypass)
{
packages.Add((PackageBase)catalogObjects[version]);
}
else
{
PackageBase pb = GetPackageFromCatalogUrl((string)catalogObjects[version], request, packageSemanticVersions, context);
if (pb != null)
{
packages.Add(pb);
}
}
}
}
}
else
{
// In some implementations (lookin' at you MyGet) there's no catalogEntry object
PackageBase pb = ConcurrentInMemoryCache.Instance.GetOrAdd <PackageBase>(registrationUrl, () =>
{
if (!root.HasProperty("catalogentry"))
{
if ((packageSemanticVersions == null || packageSemanticVersions.Contains(new SemanticVersion(root.version))))
{
return(this.ResourcesCollection.PackageConverter.Make(root));
}
else
{
return(null);
}
}
else
{
return(GetPackageFromCatalogUrl(this.ResourcesCollection.CatalogUrlConverter.Make(root), request, packageSemanticVersions, context));
}
});
if (pb != null)
{
packages.Add(pb);
}
}
}
else
{
request.Warning(Messages.JsonSchemaMismatch, "type");
request.Debug(Messages.JsonObjectDump, DynamicJsonParser.Serialize(root));
}
if (context.RequiredVersion == null && context.MinimumVersion == null && context.MaximumVersion == null && packages != null)
{
PackageBase absoluteLatestPackage = packages.Where(p => p.IsPrerelease).OrderByDescending(pb => ((IPackage)pb).Version).FirstOrDefault();
if (absoluteLatestPackage != null)
{
absoluteLatestPackage.IsAbsoluteLatestVersion = true;
}
PackageBase latestPackage = packages.Where(p => !p.IsPrerelease).OrderByDescending(pb => ((IPackage)pb).Version).FirstOrDefault();
if (latestPackage != null)
{
latestPackage.IsLatestVersion = true;
}
}
}
else if (finalAttempt)
{
// This is the last retry of this URL. It's definitely not a good one.
ConcurrentInMemoryCache.Instance.GetOrAdd <PackageBase>(registrationUrl, () => null);
}
return(packages);
}