Package file copied from github.com/elastic/beatshttps://github.com/elastic/beats/blob/master/LICENSELicensed under the Apache License, Version 2.0 (the "License");.

Abs returns the absolute value of x.

AcquireTimer returns a time.Timer from the pool and updates it to send the current time on its channel after at least timeout.

AddTags appends a tag to the tags field of ms.

AddTagsWithKey appends a tag to the key field of ms.

AutoGetAddress get valid address to listen, if the specify port is not available, auto choose the next one.

ByteSize returns a human-readable byte string of the form 10M, 12.5K, and so forth.

BytesToUint32 convert bytes to uint32.

BytesToUint64 convert bytes to type uint64.

CheckInstanceLock make sure there is not a lock placed before check, and place a lock after check.

CheckProcessExists check if the pid is running.

ClearInstanceLock remove the lock.

convert a->b to a,b.

source should be a struct, target should be a pointer to the struct.

CopyFile copy file from src to dst.

CreateFile create file.

DeepCopy return a deep copied object.

escape "\r\n" to "\\n".

ExecuteRequest issue a request.

ExtractBool extracts a bool from an unknown type.

ExtractFloat extracts a float from an unknown type.

ExtractInt extracts an int from an unknown type.

ExtractString extracts a string from an unknown type.

FileAppendContentWithByte append bytes to the end of the file.

FileAppendNewLine append new line to the end of the file.

FileAppendNewLineWithByte append bytes and break line(\n) to the end of the file.

FileDelete delete file.

FileExists check if the path are exists.

FileExtension extract file extension from file name.

FileGetContent get string from text file.

FileMTime get file modified time.

FilePutContent put string to file.

FilePutContentWithByte put string to file.

FileSize get file size as how many bytes.

FilterDirName guess the file or directory is or contains Go source files.

RSA公钥私钥产生.

GetAvailablePort get valid port to listen, if the specify port is not available, auto choose the next one.

helper function to create a cert template with a serial number and other required fields.

return field and tags, field name is using key: NAME.

GetFieldValueByTagName returns the field value which field was tagged with the specified tagName, only supporting string fields.

GetHost return the host from a url.

GetLocalIP returns the non loopback local IP of the host.

GetLocalZone return a local timezone.

GetRootUrl parse to get url root.

GetUUID return a generated uuid.

GetValidAddress get valid address, input: :8001 -> output: 127.0.0.1:8001.

gzip.BestCompression.

HttpDelete issue a simple http delete request.

HttpGet issue a simple http get request.

HttpGetWithCookie issue http request with cookie.

Invoke dynamic execute function via function name and parameters.

IsExist returns whether a file or directory exists.

IsFile returns false when it's a directory or does not exist.

IsLocalAddress check if the address is local address.

IsValidTLD returns true if tld is a valid tld, eg: com.

JoinPath return joined file path.

MapStrUnion creates a new MapStr containing the union of the key-value pairs of the two maps.

MergeFields merges the top-level keys and values in each source map (it does not perform a deep merge).

Removes all unnecessary whitespaces.

MustFromJSONBytes simply do json unmarshal.

MustParseGeneric is like ParseGeneric except that it panics on error.

MustParseSemantic is like ParseSemantic except that it panics on error.

MustParseTime is a convenience equivalent of the ParseTime function that panics in case of errors.

fmt.Println(num, " = ", NearestThousandFormat(float64(num)))10 = 10100 = 1001000 = 1.0k10000 = 10.0k3.12345678912e+09 = 3.1b999.4 = 999-372712 = -372.7k-37271922 = -37.2m-198 = -198.

NewCache creates and returns a new Cache.

NewCacheWithExpireOnAdd creates and returns a new Cache that does not updated the expiration time when the object is accessed.

NewCacheWithRemovalListener creates and returns a new Cache and register a RemovalListener callback function.

NewDeleteRequest issue a simple http delete request.

NewGetRequest issue a simple http get request.

NewMapStrPointer initializes and returns a pointer to the given MapStr.

NewPostRequest issue a simple http post request.

NewPutRequest issue a simple http put request.

ParseGeneric parses a "generic" version string.

ParseSemantic parses a version string that exactly obeys the syntax and semantics of the "Semantic Versioning" specification (http://semver.org/) (although it ignores leading and trailing whitespace, and allows the version to be preceded by "v").

ParseTime parses a time in the TsLayout format.

Post http post with a list of values.

[]byte("gte"), []byte("strict_date_optional_time"), []byte("range")blockSplit 按照那个部分来进行划分多个区块；validBlockMustContain 区块必须包含的关键字reverse 是从区块的前面还是后面进行处理processBlockStartWithBlock 从什么地方开始处理processBlockEndWithBlock 从什么地方结束处理maxSpan 开始和结束位置的最大间隔，约束范围匹配位置的处理函数.

PromptYesNo Returns true if the user has entered Y or YES, capitalization is ignored, we are matching elasticsearch behavior.

ReadInput Capture user input for a question.

ReleaseTimer returns the time.Timer acquired via AcquireTimer to the pool and prevents the Timer from firing.

Rename handle file rename.

TODO optimize performanceReplaceByte simply replace old bytes to new bytes, the two bytes should have same length.

RestorePersistID will take the snapshot and restore to id seeds.

credit to https://github.com/DeyV/gotools/blob/master/numbers.go.

私钥解密.

公钥加密.

签名.

验证.

SnapshotPersistID will make a snapshot and persist id stats to disk.

sort by value desc by default.

StringToFloat converts a string to a float64 Returns an error if the conversion is not possible.

Advanced Unicode normalization and filtering, see http://blog.golang.org/normalization and http://godoc.org/golang.org/x/text/unicode/norm for more details.

two byte-oriented functions identical except for operator comparing c to 127.

two UTF-8 functions identical except for operator comparing c to 127.

TestListenOnTCPPort check availability of port with ip.

TestPort check port availability.

ToBytes parses a string formatted by ByteSize as bytes.

ToLowercase convert string bytes to lowercase.

ToMegabytes parses a string formatted by ByteSize as megabytes.

ToUppercase convert string bytes to uppercase.

TrimSpaces will trim space and line break.

Smart get file abs path.

Uint32toBytes convert uint32 to bytes, max uint: 4294967295.

Uint64toBytes convert uint64 to bytes.

ByteSize unit definition.

Event metadata constants.

ByteSize unit definition.

ByteSize unit definition.

ByteSize unit definition.

Event metadata constants.

ByteSize unit definition.

TsLayout is the layout to be used in the timestamp marshaling/unmarshaling everywhere.

ErrKeyNotFound indicates that the specified key was not found.

Prometheus metric name rule: [a-zA-Z_:][a-zA-Z0-9_:]* See https://prometheus.io/docs/concepts/data_model/.

Cache is a semi-persistent mapping of keys to values.

EventMetadata contains fields and tags that can be added to an event via configuration.

MapStrPointer stores a pointer to atomically get/set a MapStr object This should give faster access for use cases with lots of reads and a few changes.

Result is the http request result.

Version is an opaque representation of a version number.

Key type used in the cache.

Value type held in the cache.

MapStr is a map[string]interface{} wrapper with utility methods for common map operations like converting to JSON.

RemovalListener is the callback function type that can be registered with the cache to receive notification of the removal of expired elements.

Time is an abstraction for the time.Time type.