var CommonCustomFuncs = map[string]CustomFuncType{"coalesce":Coalesce,"concat":Concat,"dateTimeLayoutToRFC3339":DateTimeLayoutToRFC3339,"dateTimeToEpoch":DateTimeToEpoch,"dateTimeToRFC3339":DateTimeToRFC3339,"epochToDateTimeRFC3339":EpochToDateTimeRFC3339,"lower":Lower,"now":Now,"upper":Upper,"uuidv3":UUIDv3,}

funcCoalesce¶

func Coalesce(_ *transformctx.Ctx, strs ...string) (string,error)

Coalesce returns the first non-empty string of the input strings. If no input strings are given orall of them are empty, then an empty string is returned. Note: a blank string (with only whitespaces)is not considered as empty.

funcConcat¶

func Concat(_ *transformctx.Ctx, strs ...string) (string,error)

Concat concatenates a number of strings together. If no strings specified, "" is returned.

funcDateTimeLayoutToRFC3339¶

func DateTimeLayoutToRFC3339(_ *transformctx.Ctx, datetime, layout, layoutTZ, fromTZ, toTZstring) (string,error)

DateTimeLayoutToRFC3339 parses a 'datetime' string according a given 'layout' and normalizes and returns itin RFC3339 format. 'layoutTZ' specifies whether the 'layout' contains timezone info (such as tz offset, tzshort names lik 'PST', or standard IANA tz long name, such as 'America/Los_Angeles'); note 'layoutTZ' is astring with two possible values "true" or "false". 'fromTZ' is only used if 'datetime'/'layout' don't containTZ info; if not specified, the parser will keep the original TZ (or lack of it) of 'datetime'. 'toTZ' decideswhat TZ the output RFC3339 date time will be in.

funcDateTimeToEpoch¶

func DateTimeToEpoch(_ *transformctx.Ctx, datetime, fromTZ, unitstring) (string,error)

DateTimeToEpoch parses a 'datetime' string intelligently, and returns its epoch number. 'fromTZ'is only used if 'datetime' doesn't contain TZ info; if not specified, the parser will keep theoriginal TZ (or lack of it) of 'datetime'. 'unit' determines the time unit resolution of theoutput epoch number.

funcDateTimeToRFC3339¶

func DateTimeToRFC3339(_ *transformctx.Ctx, datetime, fromTZ, toTZstring) (string,error)

DateTimeToRFC3339 parses a 'datetime' string intelligently, normalizes and returns it in RFC3339 format.'fromTZ' is only used if 'datetime' doesn't contain TZ info; if not specified, the parser will keep theoriginal TZ (or lack of it) of 'datetime'. 'toTZ' decides what TZ the output RFC3339 date time will be in.

funcEpochToDateTimeRFC3339¶

func EpochToDateTimeRFC3339(_ *transformctx.Ctx, epoch, unitstring, tz ...string) (string,error)

EpochToDateTimeRFC3339 translates the 'epoch' timestamp under the given 'unit' into an RFC3339 formatteddatetime string in the given timezone 'tz', if specified.

funcLower¶

func Lower(_ *transformctx.Ctx, sstring) (string,error)

Lower lowers the case of an input string.

funcNow¶

func Now(_ *transformctx.Ctx) (string,error)

Now returns the current time in UTC in RFC3339 format.

funcUUIDv3¶

func UUIDv3(_ *transformctx.Ctx, sstring) (string,error)

UUIDv3 uses MD5 to produce a consistent/stable UUID for an input string.

funcUpper¶

func Upper(_ *transformctx.Ctx, sstring) (string,error)

Upper uppers the case of an input string.

typeCustomFuncType¶

type CustomFuncType = interface{}

CustomFuncType is the type of custom function. Has to use interface{} given we supportnon-variadic and variadic functions.

typeCustomFuncs¶

type CustomFuncs = map[string]CustomFuncType

CustomFuncs is a map from custom func names to an actual custom func.

func Merge(funcs ...CustomFuncs)CustomFuncs