Class CogniteTime

DateTime utility functions.

Inheritance

object

CogniteTime

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: Cognite.Extractor.Common

Assembly: Cognite.Common.dll

Syntax

public static class CogniteTime

Properties

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DateTimeEpoch

DateTime object representing the Unix Epoch, midnight 1/1/1970, in UTC.

Declaration

public static DateTime DateTimeEpoch { get; }

Property Value

Type	Description
DateTime

Methods

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FromTicks(long)

Creates an UTC DateTime object at ticksSinceEpoch ticks after the Unix Epoch, midninght 1/1/1970.

Declaration

public static DateTime FromTicks(long ticksSinceEpoch)

Parameters

Type	Name	Description
long	ticksSinceEpoch	Number of ticks since Epoch

Returns

Type	Description
DateTime	UTC DateTime object at `ticksSinceEpoch` ticks after epoch

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FromUnixTimeMilliseconds(long)

Creates an UTC DateTime object at msSinceEpoch milliseconds after the Unix Epoch, midnight 1/1/1970.

Declaration

public static DateTime FromUnixTimeMilliseconds(long msSinceEpoch)

Parameters

Type	Name	Description
long	msSinceEpoch	Number of milliseconds since Epoch

Returns

Type	Description
DateTime	UTC DateTime object at `msSinceEpoch` milliseconds after midnight 1/1/1970

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Max(DateTime, DateTime)

Return the latest of the two given DateTimes

Declaration

public static DateTime Max(DateTime t1, DateTime t2)

Parameters

Type	Name	Description
DateTime	t1
DateTime	t2

Returns

Type	Description
DateTime

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Max(TimeSpan, TimeSpan)

Return the longest of the two given TimeSpans. Handles the case of InfiniteTimeSpan, which is technically negative.

Declaration

public static TimeSpan Max(TimeSpan t1, TimeSpan t2)

Parameters

Type	Name	Description
TimeSpan	t1
TimeSpan	t2

Returns

Type	Description
TimeSpan

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Min(DateTime, DateTime)

Return the earliest of the two given DateTimes.

Declaration

public static DateTime Min(DateTime t1, DateTime t2)

Parameters

Type	Name	Description
DateTime	t1
DateTime	t2

Returns

Type	Description
DateTime

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Min(TimeSpan, TimeSpan)

Return the shortest of the two given TimeSpans. Handles the case of InfiniteTimeSpan, which is technically negative.

Declaration

public static TimeSpan Min(TimeSpan t1, TimeSpan t2)

Parameters

Type	Name	Description
TimeSpan	t1
TimeSpan	t2

Returns

Type	Description
TimeSpan

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NanosecondsSinceEpoch(DateTime)

Returns the how many nanoseconds have passed since the Unix Epoch, 1/1/1970 to the date passed as parameter. A Nanosecond corresponds to 100 ticks.

Declaration

public static long NanosecondsSinceEpoch(this DateTime time)

Parameters

Type	Name	Description
DateTime	time	UTC DateTime object to convert

Returns

Type	Description
long	Number of ticks since epoch

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ParseTimeSpanString(string?, string?)

Parse cognite timestamp into timespan. Format is N[timeunit]. If timeunit is left out, then defaultUnit can be specified and if t is a whole number it can be converted using that.

Declaration

public static TimeSpan? ParseTimeSpanString(string? t, string? defaultUnit = null)

Parameters

Type	Name	Description
string	t	Raw input
string	defaultUnit	Default unit to use if no unit is specified

Returns

Type	Description
TimeSpan?	TimeSpan or null if input is invalid

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ParseTimestampString(string?, DateTime?)

Parse Cognite timestamp string. The format is N[timeunit]-ago where timeunit is w,d,h,m,s. Example: '2d-ago' returns a timestamp two days ago. If the format is N[timeunit], without -ago, it is set to the future, or after relative Without timeunit, it is converted to a datetime in milliseconds since epoch.

Declaration

public static DateTime? ParseTimestampString(string? t, DateTime? relative = null)

Parameters

Type	Name	Description
string	t	Timestamp string
DateTime?	relative	Set time relative to this if -ago syntax is used

Returns

Type	Description
DateTime?	DateTime or null if the input is invalid

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TicksSinceEpoch(DateTime)

Returns the how many ticks have passed since the Unix Epoch, 1/1/1970 to the date passed as parameter. A Tick corresponds to 10 000 ms (ref. TimeSpan.TicksPerMillisecond).

This method may return a negative number.

Declaration

public static long TicksSinceEpoch(this DateTime time)

Parameters

Type	Name	Description
DateTime	time	UTC DateTime object to convert

Returns

Type	Description
long	Number of ticks since epoch

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ToISOString(DateTime)

Return ISO 8601 formatted string (yyyy-MM-dd HH:mm:ss.fff) with millisecond resolution.

Declaration

public static string ToISOString(this DateTime time)

Parameters

Type	Name	Description
DateTime	time

Returns

Type	Description
string	ISO 8601 formatted string

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ToUnixTimeMilliseconds(DateTime)

Returns the how many milliseconds have passed since the Unix Epoch, 1/1/1970 to the date passed as parameter. NOTE: Using TimeSpan.ToMilliseconds may cause rounding problems when 'time' is DateTime.MaxValue: The resulting(time - DateTimeEpoch).ToMilliseconds is 253402300800000, which cannot be converted back to DateTime(ArgumentOutOfRangeException). This method returns 253402300799999 instead.

Declaration

public static long ToUnixTimeMilliseconds(this DateTime time)

Parameters

Type	Name	Description
DateTime	time	DateTime object to convert

Returns

Type	Description
long	Number of milliseconds since epoch