/// <summary>
/// Performs the actual HTTP head request to check for the presence of a maven artifact with a
/// given extension.
/// </summary>
/// <returns>true if the package exists, and false otherwise</returns>
bool MavenPackageExists(MavenPackageID mavenGavParser, Uri feedUri, ICredentials feedCredentials, XmlDocument snapshotMetadata)
{
return(feedUri.ToString().TrimEnd('/')
.Map(uri => uri + (snapshotMetadata == null ?
mavenGavParser.DefaultArtifactPath :
mavenGavParser.SnapshotArtifactPath(MetadataParser.GetLatestSnapshotRelease(
snapshotMetadata,
mavenGavParser.Packaging,
mavenGavParser.Version))))
.Map(uri =>
{
try
{
return WebRequest.Create(uri)
.Tee(c => c.Method = "HEAD")
.Tee(c => c.Credentials = feedCredentials)
.GetResponse()
.Map(response => response as HttpWebResponse)
.Map(response => (int)response.StatusCode >= 200 && (int)response.StatusCode <= 299);
}
catch
{
return false;
}
}));
}
/// <summary>
/// Performs the actual HTTP head request to check for the presence of a maven artifact with a
/// given extension.
/// </summary>
/// <returns>true if the package exists, and false otherwise</returns>
bool MavenPackageExists(MavenPackageID mavenGavParser, Uri feedUri, ICredentials feedCredentials,
XmlDocument snapshotMetadata)
{
var uri = feedUri.ToString().TrimEnd('/') + (snapshotMetadata == null
? mavenGavParser.DefaultArtifactPath
: mavenGavParser.SnapshotArtifactPath(
GetLatestSnapshotRelease(
snapshotMetadata,
mavenGavParser.Packaging,
mavenGavParser.Version)));
try
{
var req = WebRequest.Create(uri);
req.Method = "HEAD";
req.Credentials = feedCredentials;
using (var response = (HttpWebResponse)req.GetResponse())
{
return((int)response.StatusCode >= 200 && (int)response.StatusCode <= 299);
}
}
catch
{
return(false);
}
}
/// <summary>
/// Actually download the maven file.
/// </summary>
/// <returns>The path to the downloaded file</returns>
PackagePhysicalFileMetadata DownloadArtifact(
MavenPackageID mavenGavFirst,
string packageId,
IVersion version,
Uri feedUri,
ICredentials feedCredentials,
string cacheDirectory,
int maxDownloadAttempts,
TimeSpan downloadAttemptBackoff,
XmlDocument?snapshotMetadata)
{
Guard.NotNull(mavenGavFirst, "mavenGavFirst can not be null");
Guard.NotNullOrWhiteSpace(packageId, "packageId can not be null");
Guard.NotNull(version, "version can not be null");
Guard.NotNullOrWhiteSpace(cacheDirectory, "cacheDirectory can not be null");
Guard.NotNull(feedUri, "feedUri can not be null");
var localDownloadName = Path.Combine(cacheDirectory, PackageName.ToCachedFileName(packageId, version, "." + mavenGavFirst.Packaging));
var downloadUrl = feedUri.ToString().TrimEnd('/') +
(snapshotMetadata == null
? mavenGavFirst.DefaultArtifactPath
: mavenGavFirst.SnapshotArtifactPath(GetLatestSnapshotRelease(
snapshotMetadata,
mavenGavFirst.Packaging,
mavenGavFirst.Classifier,
mavenGavFirst.Version)));
for (var retry = 0; retry < maxDownloadAttempts; ++retry)
{
try
{
Log.Verbose($"Downloading Attempt {downloadUrl} TO {localDownloadName}");
using (var client = new WebClient
{
Credentials = feedCredentials
})
{
client.DownloadFile(downloadUrl, localDownloadName);
var packagePhysicalFileMetadata = PackagePhysicalFileMetadata.Build(localDownloadName);
return(packagePhysicalFileMetadata
?? throw new CommandException($"Unable to retrieve metadata for package {packageId}, version {version}"));
}
}
catch (Exception ex)
{
if ((retry + 1) == maxDownloadAttempts)
{
throw new MavenDownloadException("Failed to download the Maven artifact.\r\nLast Exception Message: " + ex.Message);
}
Thread.Sleep(downloadAttemptBackoff);
}
}
throw new MavenDownloadException("Failed to download the Maven artifact");
}
/// <summary>
/// Actually download the maven file.
/// </summary>
/// <returns>The path to the downloaded file</returns>
string DownloadArtifact(
MavenPackageID mavenGavFirst,
string packageId,
IVersion version,
Uri feedUri,
ICredentials feedCredentials,
string cacheDirectory,
int maxDownloadAttempts,
TimeSpan downloadAttemptBackoff,
XmlDocument snapshotMetadata)
{
Guard.NotNull(mavenGavFirst, "mavenGavFirst can not be null");
Guard.NotNullOrWhiteSpace(packageId, "packageId can not be null");
Guard.NotNull(version, "version can not be null");
Guard.NotNullOrWhiteSpace(cacheDirectory, "cacheDirectory can not be null");
Guard.NotNull(feedUri, "feedUri can not be null");
for (var retry = 0; retry < maxDownloadAttempts; ++retry)
{
try
{
return(GetFilePathToDownloadPackageTo(
cacheDirectory,
packageId,
version.ToString(),
mavenGavFirst.Packaging)
.Tee(path => feedUri.ToString().TrimEnd('/')
.Map(uri => uri + (snapshotMetadata == null ?
mavenGavFirst.DefaultArtifactPath :
mavenGavFirst.SnapshotArtifactPath(MetadataParser.GetLatestSnapshotRelease(
snapshotMetadata,
mavenGavFirst.Packaging,
mavenGavFirst.Version))))
.Map(uri => FunctionalExtensions.Using(
() => new WebClient(),
client => client
.Tee(c => c.Credentials = feedCredentials)
.Tee(c => c.DownloadFile(uri, path))))
));
}
catch
{
Thread.Sleep(downloadAttemptBackoff);
}
}
throw new MavenDownloadException("Failed to download the Maven artifact");
}
