public ExecuteRequest(int protocolVersion, byte[] id, RowSetMetadata metadata, bool tracingEnabled, QueryProtocolOptions queryOptions)
{
ProtocolVersion = protocolVersion;
if (metadata != null && queryOptions.Values.Length != metadata.Columns.Length)
{
throw new ArgumentException("Number of values does not match with number of prepared statement markers(?).", "values");
}
_id = id;
_metadata = metadata;
_queryOptions = queryOptions;
if (tracingEnabled)
{
_flags = 0x02;
}
if (Consistency.IsSerialConsistencyLevel())
{
throw new RequestInvalidException("Serial consistency specified as a non-serial one.");
}
if (queryOptions.SerialConsistency != ConsistencyLevel.Any && queryOptions.SerialConsistency.IsSerialConsistencyLevel() == false)
{
throw new RequestInvalidException("Non-serial consistency specified as a serial one.");
}
if (queryOptions.Timestamp != null && protocolVersion < 3)
{
throw new NotSupportedException("Timestamp for query is supported in Cassandra 2.1 or above.");
}
}
/// <inheritdoc/>
public override int GetHashCode()
{
unchecked
{
return((Key.GetHashCode() * 397) ^ (Consistency?.GetHashCode() ?? 0));
}
}
/// <summary>
/// Returns the best (lowest rank) server that can provide the desired consistency for the given object.
/// </summary>
/// <param name="objectName">Name of the object being read</param>
/// <param name="consistency">Desired consistency</param>
/// <param name="bound">Time bound for bounded staleness (in seconds)</param>
/// <returns>The selected server.</returns>
public ServerState SelectServerForConsistency(string objectName, Consistency consistency, int bound)
{
HashSet <ServerState> set;
set = SelectServersForConsistency(objectName, consistency, bound);
return(SelectBestServer(set));
}
public QueryRequest(int protocolVersion, string cqlQuery, bool tracingEnabled, QueryProtocolOptions queryOptions)
{
//TODO: Replace constructor parameters with IStatement
ProtocolVersion = protocolVersion;
_cqlQuery = cqlQuery;
_queryOptions = queryOptions;
if (tracingEnabled)
{
_headerFlags = FrameHeader.HeaderFlag.Tracing;
}
if (queryOptions == null)
{
throw new ArgumentNullException("queryOptions");
}
if (Consistency.IsSerialConsistencyLevel())
{
throw new RequestInvalidException("Serial consistency specified as a non-serial one.");
}
if (queryOptions.SerialConsistency != ConsistencyLevel.Any && queryOptions.SerialConsistency.IsSerialConsistencyLevel() == false)
{
throw new RequestInvalidException("Non-serial consistency specified as a serial one.");
}
if (protocolVersion < 3)
{
//Features supported in protocol v3 and above
if (queryOptions.Timestamp != null)
{
throw new NotSupportedException("Timestamp for query is supported in Cassandra 2.1 and above.");
}
if (queryOptions.ValueNames != null && queryOptions.ValueNames.Count > 0)
{
throw new NotSupportedException("Query parameter names feature is supported in Cassandra 2.1 and above.");
}
}
}
public static void init()
{
consistency = PIMConfigs.Consistency_Model;
if (consistency == Consistency.SpinLock)
{
spin_lock = new SpinLock();
}
}
public static ServiceLevelAgreement CreateConsistencySla(Consistency cons, int latency, string Name)
{
ServiceLevelAgreement sla = new ServiceLevelAgreement(Name);
SubSLA subSla1 = new SubSLA(latency, cons, 0, 1);
sla.Add(subSla1);
return(sla);
}
/// <summary>
/// Creates a simple SLA with a single desired consistency and a large latency.
/// This forces reads to be performed at the closest replica with that consistency.
/// </summary>
/// <param name="cons"></param>
/// <returns></returns>
public static ServiceLevelAgreement CreateConsistencySla(Consistency cons)
{
ServiceLevelAgreement sla = new ServiceLevelAgreement(cons.ToString("g"));
SubSLA subSla1 = new SubSLA(2000, cons, 0, 1);
sla.Add(subSla1);
return(sla);
}
/// <summary>
/// Returns the servers that can provide the desired consistency for the given object.
/// </summary>
/// <param name="objectName">Name of the object being read</param>
/// <param name="consistency">Desired consistency</param>
/// <param name="bound">Time bound for bounded staleness (in seconds)</param>
/// <returns>The selected servers.</returns>
public HashSet <ServerState> SelectServersForConsistency(string objectName, Consistency consistency, int bound)
{
HashSet <ServerState> selected;
switch (consistency)
{
case Consistency.Strong:
selected = SelectServersForStrongConsistency(objectName);
break;
case Consistency.ReadMyWrites:
selected = SelectServersForReadMyWrites(objectName);
break;
case Consistency.MonotonicReads:
selected = SelectServersForMonotonicReads(objectName);
break;
case Consistency.Session:
selected = SelectServersForReadMyWrites(objectName);
selected.IntersectWith(SelectServersForMonotonicReads(objectName));
break;
case Consistency.Causal:
selected = SelectServersForCausal(objectName);
break;
case Consistency.Bounded:
selected = SelectServersForBoundedStaleness(objectName, bound);
break;
case Consistency.BoundedReadMyWrites:
selected = SelectServersForBoundedStaleness(objectName, bound);
selected.IntersectWith(SelectServersForReadMyWrites(objectName));
break;
case Consistency.BoundedMonotonicReads:
selected = SelectServersForBoundedStaleness(objectName, bound);
selected.IntersectWith(SelectServersForMonotonicReads(objectName));
break;
case Consistency.BoundedSession:
selected = SelectServersForBoundedStaleness(objectName, bound);
selected.IntersectWith(SelectServersForReadMyWrites(objectName));
selected.IntersectWith(SelectServersForMonotonicReads(objectName));
break;
case Consistency.Eventual:
selected = SelectServersForEventualConsistency(objectName);
break;
default:
selected = SelectServersForStrongConsistency(objectName);
break;
}
return(selected);
}
/// <inheritdoc/>
public override int GetHashCode()
{
unchecked
{
var hashCode = Key.GetHashCode();
hashCode = (hashCode * 397) ^ (Consistency != null ? Consistency.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ (Request != null ? Request.GetHashCode() : 0);
return(hashCode);
}
}
/// <summary>
/// Constructs a new SubSLA.
/// </summary>
/// <param name="latency">desired latency (in milliseconds)</param>
/// <param name="consistency">desired consistency</param>
/// <param name="bound">time-bound for boudned staleness (in seconds)</param>
/// <param name="utility">value of meeting this SubSLA</param>
public SubSLA(int latency, Consistency consistency, int bound = 0, float utility = 1.0F)
{
this.latency = latency;
this.consistency = consistency;
this.bound = bound;
this.utility = utility;
this.NumberOfHits = 0;
this.NumberOfMisses = 0;
}
public IndexTypeBase(IIndex index, string name = null, Consistency defaultConsistency = Consistency.Eventual)
{
Name = name ?? _typeName;
Index = index ?? throw new ArgumentNullException(nameof(index));
Type = typeof(T);
DefaultConsistency = defaultConsistency;
_queryBuilder = new Lazy <IElasticQueryBuilder>(CreateQueryBuilder);
_queryParser = new Lazy <ElasticQueryParser>(CreateQueryParser);
_aliasMap = new Lazy <AliasMap>(GetAliasMap);
}
public override async Task WriteMessages(string database, IEnumerable<WriteMessage> messages, Consistency? consistency = null, string retentionPolicy = null, DateTime? timestamp = null, TimePrecision? precision = null)
{
using (var msg = new HttpRequestMessage(HttpMethod.Post, CreateUrl("/write", database, null, null, consistency, retentionPolicy)))
{
msg.Content = new StringContent(string.Join("\n", messages.Select(x => x.ToString(timestamp, precision))), Encoding.UTF8);
using (var response = await _client.SendAsync(msg, HttpCompletionOption.ResponseHeadersRead, CancellationToken.None).ConfigureAwait(false))
{
response.ValidateHttpResponse(HttpStatusCode.NoContent, true);
}
}
}
/// <summary>
/// Returns an indication of whether reads should be directed to the primary replica in order to obtain the desired consistency.
/// </summary>
/// <param name="objectName">Name of the object being read</param>
/// <param name="consistency">Desired consistency</param>
/// <param name="bound">Time bound for bounded staleness (in seconds)</param>
/// <returns>Whether to read from the primary.</returns>
public bool MustUsePrimary(string objectName, Consistency consistency, int bound)
{
HashSet <ServerState> set;
set = SelectServersForConsistency(objectName, consistency, bound);
if (set.Count == 1 && config.PrimaryServers.Contains(set.SingleOrDefault().Name))
{
// the primary is the only server in the selected set
return(true);
}
return(false);
}
public static CodeAttributeDeclaration ReliabilityContractDeclaration(Consistency consistency, Cer cer)
{
return(new CodeAttributeDeclaration(
new CodeTypeReference(typeof(ReliabilityContractAttribute)),
new CodeAttributeArgument(
new CodePropertyReferenceExpression(
new CodeTypeReferenceExpression(typeof(Consistency)),
consistency.ToString())),
new CodeAttributeArgument(
new CodePropertyReferenceExpression(
new CodeTypeReferenceExpression(typeof(Cer)),
cer.ToString()))));
}
private static Refresh ToRefresh(Consistency mode)
{
if (mode == Consistency.Immediate)
{
return(Refresh.True);
}
if (mode == Consistency.Wait)
{
return(Refresh.WaitFor);
}
return(Refresh.False);
}
private static void InitializeModel(DishViewModel model, Consistency consistency, Models.Type type)
{
model.DishTypes = new List <Microsoft.AspNetCore.Mvc.Rendering.SelectListItem>();
model.ConsistencyTypes = new List <Microsoft.AspNetCore.Mvc.Rendering.SelectListItem>();
var types = EnumUtil.EnumToList <Models.Type>(Convert.ToInt32(type));
model.DishTypes.AddRange(types);
var consistencyTypes = EnumUtil.EnumToList <Models.Consistency>(Convert.ToInt32(consistency));
model.ConsistencyTypes.AddRange(consistencyTypes);
}
internal static string GetQueryParameter(this Consistency that)
{
switch (that)
{
case Consistency.One:
return("one");
case Consistency.Quorum:
return("quorum");
case Consistency.All:
return("all");
case Consistency.Any:
return("any");
default:
throw new ArgumentException("Invalid parameter value.", nameof(that));
}
}
public ReliabilityContractAttribute(Consistency consistencyGuarantee, System.Runtime.ConstrainedExecution.Cer cer)
{
this._consistency = consistencyGuarantee;
this._cer = cer;
}
public ReliabilityContractAttribute(Consistency consistencyGuarantee, Cer cer)
{
_consistency = consistencyGuarantee;
_cer = cer;
}
partial void UpdateConsistency(Consistency instance);
public ReliabilityContractAttribute
(Consistency consistencyGuarantee, CER cer)
{
this.consistencyGuarantee = consistencyGuarantee;
this.cer = cer;
}
/// <summary>Initializes a new instance of the <see cref="T:System.Runtime.ConstrainedExecution.ReliabilityContractAttribute" /> class with the specified <see cref="T:System.Runtime.ConstrainedExecution.Consistency" /> guarantee and <see cref="T:System.Runtime.ConstrainedExecution.Cer" /> value.</summary><param name="consistencyGuarantee">One of the <see cref="T:System.Runtime.ConstrainedExecution.Consistency" /> values. </param><param name="cer">One of the <see cref="T:System.Runtime.ConstrainedExecution.Cer" /> values. </param>
public ReliabilityContractAttribute(Consistency consistencyGuarantee, Cer cer)
{
throw new NotImplementedException();
}
public UpdateDescriptor <T> Concistency(Consistency consistency)
{
this._Consistency = consistency;
return(this);
}
public ReliabilityContractAttribute
(Consistency consistencyGuarantee, CER cer)
{
this.consistencyGuarantee = consistencyGuarantee;
this.cer = cer;
}
public ReliabilityContractAttribute(Consistency consistencyGuarantee, System.Runtime.ConstrainedExecution.Cer cer)
{
this._consistency = consistencyGuarantee;
this._cer = cer;
}
partial void DeleteConsistency(Consistency instance);
partial void UpdateConsistency(Consistency instance);
partial void InsertConsistency(Consistency instance);
public ReliabilityContractAttribute (Consistency consistency, CER cer)
{
this.consistency = consistency;
this.cer = cer;
}
protected string CreateUrl(string path, string database = null, string query = null, TimePrecision? timePrecision = null, Consistency? consistency = null, string retentionPolicy = null, TimePrecision? resultPrecision = null)
{
var queryString = new StringBuilder("?");
if (!string.IsNullOrEmpty(query))
{
queryString.Append("q=" + Uri.EscapeDataString(query.StripWhitespace()) + "&");
}
if (!string.IsNullOrEmpty(database))
{
queryString.Append("db=" + Uri.EscapeDataString(database.FormatIdentifier()) + "&");
}
if (retentionPolicy != null)
{
queryString.Append("rp=" + Uri.EscapeDataString(retentionPolicy.FormatIdentifier()) + "&");
}
if (!string.IsNullOrEmpty(Settings.Username) && !string.IsNullOrEmpty(Settings.Password))
{
queryString.Append("u=" + Uri.EscapeDataString(Settings.Username.Trim()) + "&");
queryString.Append("p=" + Uri.EscapeDataString(Settings.Password.Trim()) + "&");
}
if (timePrecision.HasValue)
{
switch (timePrecision)
{
case TimePrecision.Nanosecond:
// This is the default precision
queryString.Append("precision=n&");
break;
case TimePrecision.Microsecond:
queryString.Append("precision=u&");
break;
case TimePrecision.Millisecond:
queryString.Append("precision=ms&");
break;
case TimePrecision.Second:
queryString.Append("precision=s&");
break;
case TimePrecision.Minute:
queryString.Append("precision=m&");
break;
case TimePrecision.Hour:
queryString.Append("precision=h&");
break;
}
}
if (consistency.HasValue)
{
switch (consistency)
{
case Consistency.One:
queryString.Append("consistency=one&");
break;
case Consistency.Quorum:
queryString.Append("consistency=quorum&");
break;
case Consistency.All:
queryString.Append("consistency=all&");
break;
case Consistency.Any:
queryString.Append("consistency=any&");
break;
}
}
if (resultPrecision.HasValue)
{
switch (resultPrecision.Value)
{
case TimePrecision.Nanosecond:
// This is the default precision
queryString.Append("epoch=n&");
break;
case TimePrecision.Microsecond:
queryString.Append("epoch=u&");
break;
case TimePrecision.Millisecond:
queryString.Append("epoch=ms&");
break;
case TimePrecision.Second:
queryString.Append("epoch=s&");
break;
case TimePrecision.Minute:
queryString.Append("epoch=m&");
break;
case TimePrecision.Hour:
queryString.Append("epoch=h&");
break;
}
}
if (queryString.Length > 1)
{
queryString.Length -= 1;
}
else
{
queryString.Length = 0;
}
return string.Format("{0}://{1}:{2}{3}{4}",
Settings.UseHttps ? "https" : "http",
Settings.Host,
Settings.Port,
path.StartsWith("/") ? path : "/" + path,
queryString);
}
public WriteOptions SetConsistency(Consistency value)
{
Consistency = value;
return this;
}
public BulkUpdateDescriptor <T, K> Consistency(Consistency consistency)
{
this._Consistency = consistency;
return(this);
}
public abstract Task WriteMessage(string database, WriteMessage message, Consistency? consistency = null, string retentionPolicy = null, DateTime? timestamp = null, TimePrecision? precision = null);
public static Consistency GetConsistency(this ICommandOptions options, Consistency defaultMode = Consistency.Eventual)
{
return(options.SafeGetOption(ConsistencyOptionsExtensions.ConsistencyModeKey, defaultMode));
}
public InfluxDBClient(IRequestProcessor requestProcessor, ITimestampGenerator timestampGenerator, string database, Consistency defaultConsistency) : this(database, defaultConsistency)
{
RequestProcessor = requestProcessor;
TimestampGenerator = timestampGenerator;
}
public BulkDeleteDescriptor <T> Consistency(Consistency consistency)
{
this._Consistency = consistency;
return(this);
}
public InfluxDBClient(string host, int port, bool useHttps, string username, string password, string database, ITimestampGenerator timestampGenerator, Consistency defaultConsistency) : this(database, defaultConsistency)
{
RequestProcessor = new HttpClientRequestProcessor(new RequestProcessorSettings(host, port, useHttps, username, password));
TimestampGenerator = timestampGenerator;
}
partial void InsertConsistency(Consistency instance);
public InfluxDBClient(string host, int port, bool useHttps, string username, string password, string database, Consistency defaultConsistency, TimePrecision timestampPrecision = TimePrecision.Nanosecond) : this(database, defaultConsistency)
{
RequestProcessor = new HttpClientRequestProcessor(new RequestProcessorSettings(host, port, useHttps, username, password));
TimestampGenerator = new AdaptiveTimestampGenerator(timestampPrecision);
}
partial void DeleteConsistency(Consistency instance);
public async Task WriteMessages(IEnumerable<WriteMessage> messages, Consistency? consistency = null, string retentionPolicy = null)
{
await RequestProcessor.WriteMessages(Database, messages, consistency ?? DefaultConsistency, retentionPolicy, TimestampGenerator.GetTimestamp(), TimestampGenerator.Precision).ConfigureAwait(false);
}
public ReliabilityContractAttribute(Consistency consistency, CER cer)
{
this.consistency = consistency;
this.cer = cer;
}
void Out(out Consistency c)
{
c = new Consistency();
c.Field = 0;
}
public ReliabilityContractAttribute(Consistency consistencyGuarantee, Cer cer)
{
_consistency = consistencyGuarantee;
_cer = cer;
}
public static Refresh GetRefreshMode(this ICommandOptions options, Consistency defaultMode = Consistency.Eventual)
{
return(ToRefresh(options.GetConsistency(defaultMode)));
}
private InfluxDBClient(string database, Consistency defaultConsistency)
{
Database = database;
DefaultConsistency = defaultConsistency;
}
public abstract Task WriteMessages(string database, IEnumerable<WriteMessage> messages, Consistency? consistency = null, string retentionPolicy = null, DateTime? timestamp = null, TimePrecision? precision = null);
