private void EnsureGraphClientConstructed()
{
if (_graphClient != null)
{
return;
}
Guard.Null(ConnectionConfig);
Guard.NullOrEmpty(ConnectionConfig.GraphUri, "Connection string cannot be null or empty");
var graphUri = new Uri(ConnectionConfig.GraphUri);
var httpClientHandler = new HttpClientHandler();
// We want the staging config for proxyUri to be overridden when running in TeamCity
// Or you can do something like this C:\>set Data:Neo4j:ProxyUri=http://teamcity.internal.dev:3128
var disableProxyHint = "\"<";
if (ConnectionConfig.HasProxyUri() && !ConnectionConfig.ProxyUri.StartsWith(disableProxyHint))
{
httpClientHandler.Proxy = new WebProxy(ConnectionConfig.ProxyUri, true);
httpClientHandler.UseProxy = true;
};
var httpClient = new HttpClient(httpClientHandler);
var httpClientWrapper = new HttpClientWrapper(ConnectionConfig.Username, ConnectionConfig.Password, httpClient);
_graphClient = new GraphClient(graphUri, httpClientWrapper);
_graphClient.JsonContractResolver = new CamelCasePropertyNamesContractResolver();
}
/// <summary>
/// Get HTTP client wrapper for access to authenticated Neo4j graph database using the Neo4jClient library.
/// </summary>
/// <returns></returns>
public static Neo4jClient.HttpClientWrapper GetNeo4jAuthenticatedClient()
{
// Get authentication header from configuration
var authentication = Configuration.GetAuthorizationHeader();
HttpClient httpClient = new HttpClient();
httpClient.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Authorization", Convert.ToBase64String(Encoding.ASCII.GetBytes(authentication)));
Neo4jClient.HttpClientWrapper clientWrapper = new Neo4jClient.HttpClientWrapper(httpClient);
return(clientWrapper);
}
internal static async Task <NeoServerConfiguration> GetConfigurationAsync(Uri rootUri, string username, string password, ExecutionConfiguration executionConfiguration)
{
if (executionConfiguration == null)
{
var httpClient = new HttpClientWrapper(username, password);
executionConfiguration = new ExecutionConfiguration
{
HttpClient = httpClient,
UserAgent =
string.Format("Neo4jClient/{0}", typeof(NeoServerConfiguration).Assembly.GetName().Version),
UseJsonStreaming = true,
JsonConverters = GraphClient.DefaultJsonConverters,
Username = username,
Password = password
};
}
if (!rootUri.AbsoluteUri.EndsWith("/"))
{
rootUri = new Uri(rootUri.AbsoluteUri + "/");
}
rootUri = new Uri(rootUri, "");
var result = await Request.With(executionConfiguration)
.Get(rootUri)
.WithExpectedStatusCodes(HttpStatusCode.OK)
.ParseAs <RootApiResponse>()
.ExecuteAsync().ConfigureAwait(false);
if (result == null)
{
throw new ApplicationException("Couldn't obtain server Root API configuration.");
}
var rootUriWithoutUserInfo = rootUri;
if (!string.IsNullOrEmpty(rootUriWithoutUserInfo.UserInfo))
{
rootUriWithoutUserInfo = new UriBuilder(rootUri.AbsoluteUri)
{
UserName = "",
Password = ""
}.Uri;
}
var baseUriLengthToTrim = rootUriWithoutUserInfo.AbsoluteUri.Length - 1;
result.Batch = result.Batch.Substring(baseUriLengthToTrim);
result.Node = result.Node.Substring(baseUriLengthToTrim);
result.NodeIndex = result.NodeIndex.Substring(baseUriLengthToTrim);
result.Relationship = "/relationship"; //Doesn't come in on the Service Root
result.RelationshipIndex = result.RelationshipIndex.Substring(baseUriLengthToTrim);
result.ExtensionsInfo = result.ExtensionsInfo.Substring(baseUriLengthToTrim);
if (!string.IsNullOrEmpty(result.Transaction))
{
result.Transaction = result.Transaction.Substring(baseUriLengthToTrim);
}
if (result.Extensions != null && result.Extensions.GremlinPlugin != null)
{
result.Extensions.GremlinPlugin.ExecuteScript =
result.Extensions.GremlinPlugin.ExecuteScript.Substring(baseUriLengthToTrim);
}
if (result.Cypher != null)
{
result.Cypher = result.Cypher.Substring(baseUriLengthToTrim);
}
return(new NeoServerConfiguration(result)
{
RootUri = rootUri,
Username = username,
Password = password
});
}
internal static NeoServerConfiguration GetConfiguration(Uri rootUri, string username, string password, ExecutionConfiguration executionConfiguration)
{
if (executionConfiguration == null)
{
var httpClient = new HttpClientWrapper(username, password);
executionConfiguration = new ExecutionConfiguration
{
HttpClient = httpClient,
UserAgent =
string.Format("Neo4jClient/{0}", typeof (NeoServerConfiguration).Assembly.GetName().Version),
UseJsonStreaming = true,
JsonConverters = GraphClient.DefaultJsonConverters,
Username = username,
Password = password
};
}
if (!rootUri.AbsoluteUri.EndsWith("/"))
rootUri = new Uri(rootUri.AbsoluteUri + "/");
rootUri = new Uri(rootUri, "");
var result = Request.With(executionConfiguration)
.Get(rootUri)
.WithExpectedStatusCodes(HttpStatusCode.OK)
.ParseAs<RootApiResponse>()
.Execute();
if (result == null)
{
throw new ApplicationException("Couldn't obtain server Root API configuration.");
}
var rootUriWithoutUserInfo = rootUri;
if (!string.IsNullOrEmpty(rootUriWithoutUserInfo.UserInfo))
{
rootUriWithoutUserInfo = new UriBuilder(rootUri.AbsoluteUri)
{
UserName = "",
Password = ""
}.Uri;
}
var baseUriLengthToTrim = rootUriWithoutUserInfo.AbsoluteUri.Length - 1;
result.Batch = result.Batch.Substring(baseUriLengthToTrim);
result.Node = result.Node.Substring(baseUriLengthToTrim);
result.NodeIndex = result.NodeIndex.Substring(baseUriLengthToTrim);
result.Relationship = "/relationship"; //Doesn't come in on the Service Root
result.RelationshipIndex = result.RelationshipIndex.Substring(baseUriLengthToTrim);
result.ExtensionsInfo = result.ExtensionsInfo.Substring(baseUriLengthToTrim);
if (!string.IsNullOrEmpty(result.Transaction))
{
result.Transaction = result.Transaction.Substring(baseUriLengthToTrim);
}
if (result.Extensions != null && result.Extensions.GremlinPlugin != null)
{
result.Extensions.GremlinPlugin.ExecuteScript =
result.Extensions.GremlinPlugin.ExecuteScript.Substring(baseUriLengthToTrim);
}
if (result.Cypher != null)
{
result.Cypher = result.Cypher.Substring(baseUriLengthToTrim);
}
return new NeoServerConfiguration(result)
{
RootUri = rootUri,
Username = username,
Password = password
};
}
/// <summary>
/// Retrieve the GraphClient object for the Neo4j graph database configured in application settings.
/// </summary>
/// <returns>Returns Neo4jClient .NET wrapper for data store management of a graph database instance managed over HTTP.</returns>
public static GraphClient GetNeo4jGraphClient()
{
Neo4jClient.HttpClientWrapper clientWrapper = Processor.GetNeo4jAuthenticatedClient();
Neo4jClient.GraphClient graphClient = new Neo4jClient.GraphClient(new Uri(Configuration.GetDatabaseUri()), clientWrapper);
return(graphClient);
}
/// <summary>
/// Get HTTP client wrapper for access to authenticated Neo4j graph database using the Neo4jClient library.
/// </summary>
/// <returns></returns>
public static Neo4jClient.HttpClientWrapper GetNeo4jAuthenticatedClient()
{
// Get authentication header from configuration
var authentication = Configuration.GetAuthorizationHeader();
HttpClient httpClient = new HttpClient();
httpClient.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Authorization", Convert.ToBase64String(Encoding.ASCII.GetBytes(authentication)));
Neo4jClient.HttpClientWrapper clientWrapper = new Neo4jClient.HttpClientWrapper(httpClient);
return clientWrapper;
}
