goutil

package module
v1.0.0-0 Latest Latest
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 Go to latest Published: Oct 24, 2017 License: Apache-2.0 Imports: 16 Imported by: 2

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goutils

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Index

Constants

View Source 
const (
	SyslogPriInfo = srslog.LOG_LOCAL7 | srslog.LOG_INFO
	SyslogPriErr  = srslog.LOG_LOCAL7 | srslog.LOG_ERR

	FileFlagsAppend = os.O_APPEND | os.O_CREATE | os.O_WRONLY
	FileModeDefault = 0640
	DirModeDefault  = 0750

	LoggerFlags = log.LstdFlags
)
View Source 
const (
	NameIx  int = 0
	ValueIx int = 1
)

Variables

This section is empty.

Functions

func AllowedMethodHandler 

func AllowedMethodHandler(h http.Handler, methods ...string) http.Handler

AllowedMethodHandler restricts http requests to methods provided.

func CompareObjects 

func CompareObjects(t1, t2 interface{}, tid string) (ss [][]string, err error)

CompareObjects compares the field count, order, names, and values of two structs objects. If the field count or order is different, the structs are not comparable and the function returns an error. If the structs differ only in field values, the function returns a list of differences. Fields can be renamed using tags (tid) and omitted with a tag value of '-'.

func ErrorDecorator 

func ErrorDecorator(err error) error

ErrorDecorator prepends function filename, line number, and function name to error messages.

func MkdirOpen 

func MkdirOpen(fn string) (*os.File, error)

func ObjecToSlice 

func ObjecToSlice(t interface{}, tid string) (ss [][]string, err error)

ObjecToSlice converts a single-tier struct into a slice of slices in the form {{name, value}, {name, value}, ...} for consumption by other methods. The outer slice maintains the fields in the same order as the struct. The tag parameter is the name of the struct tag to use for special processing. The primary purpose of this function is to offload tag processing for other functions.

func ObjectDbCols 

func ObjectDbCols(t interface{}, tid string) (cols []string, err error)

ObjectDbCols is a convenience method that returns relevant and valid database column names for use in constructing SQL statements. Only columns representing fields that will not cause a panic are included. Columns are further filtered by the tag provided. To be included, the tag must exist and must not have a '-' value.

func ObjectDbSQL 

func ObjectDbSQL(cmd, tbl string, cols []string) (sql string, err error)

ObjectDbSQL generates basic SQL statements from struct fields.

func ObjectDbVals 

func ObjectDbVals(t interface{}, tid string) (vals []interface{}, err error)

ObjectDbVals is a convenience method that returns an entire database row for simpler insert statements. Only fields that will not cause a panic are included. Fields are further filtered by the tag provided. To be included, the tag must exist and must not have a '-' value. The table or view DDL must have the same columns with the same names in the same order or the query will fail. Can be combined with the method ObjectDbCols for a less brittle solution.

func ObjectDbValsByCol 

func ObjectDbValsByCol(t interface{}, tid string, cols []string) (vals []interface{}, err error)

ObjectDbValsByCol is a convenience method that returns a database row based on the column names provided by the caller, which are ostensibly taken from the database table or view. The column names are matched to the tag on the struct field. An error is returned if a column is not found or if the associated field returns false for the IsValid(), CanAddr(), or CanInterface() reflect methods.

func ObjectToCSV 

func ObjectToCSV(t interface{}) (b []byte, err error)

ObjectToCSV converts a single-tier struct to a string suitable for writing to a CSV file. For the csv package, we need to rearranage the elements from an ordered list of {{name, value}, {name, value}, ...} to an ordered list of {{name, name, ...}, {value, value, ...}}.

func ObjectToNVP 

func ObjectToNVP(t interface{}) (b []byte, err error)

ObjectToNVP converts a single-tier struct to a string containing name- value pairs separated by newlines.

func RestoreObject 

func RestoreObject(fn string, t interface{}) (err error)

RestoreObject restores an object from a JSON file.

func RowToMap 

func RowToMap(vid, pid, sn string, rows *sql.Rows) (mss map[string]string, err error)

RowToMap converts a database row into a map of string values indexed by column name.

func SaveObject 

func SaveObject(t interface{}, fn string) (err error)

SaveObject persists an object to a JSON file.

Types

type MultiLoggerWriter 

type MultiLoggerWriter struct {
	Options struct {
		LogFiles struct {
			System bool
			Access bool
			Error  bool
		}

		Console struct {
			System bool
			Access bool
			Error  bool
		}

		Syslog struct {
			System bool
			Access bool
			Error  bool
		}

		UseFlags struct {
			System bool
			Access bool
			Error  bool
		}

		LoggerFlags struct {
			UTC       bool
			Date      bool
			Time      bool
			LongFile  bool
			ShortFile bool
			Standard  bool
		}

		RecoveryStack bool
	}

	Config struct {
		AppName string

		AppDir string
		LogDir string

		LogFiles struct {
			System string
			Access string
			Error  string
		}

		LoggerFlags struct {
			System int
			Access int
			Error  int
		}

		LogTags struct {
			System string
			Access string
			Error  string
		}

		Syslog struct {
			Prot string
			Host string
			Port string
			Tag  string
		}
	}
	// contains filtered or unexported fields
}

func NewMultiLoggerWriter 

func NewMultiLoggerWriter(cf ...string) *MultiLoggerWriter

func (*MultiLoggerWriter) AccessLog 

func (this *MultiLoggerWriter) AccessLog(s string) *MultiLoggerWriter

func (*MultiLoggerWriter) AccessTag 

func (this *MultiLoggerWriter) AccessTag(s string) *MultiLoggerWriter

func (*MultiLoggerWriter) AccessUseFlags 

func (this *MultiLoggerWriter) AccessUseFlags(b bool) *MultiLoggerWriter

func (*MultiLoggerWriter) AppDir 

func (this *MultiLoggerWriter) AppDir(s string) *MultiLoggerWriter

func (*MultiLoggerWriter) AppName 

func (this *MultiLoggerWriter) AppName(s string) *MultiLoggerWriter

func (*MultiLoggerWriter) Defaults 

func (this *MultiLoggerWriter) Defaults() *MultiLoggerWriter

func (*MultiLoggerWriter) DefaultsInit 

func (this *MultiLoggerWriter) DefaultsInit() *MultiLoggerWriter

func (*MultiLoggerWriter) EnableAccess 

func (this *MultiLoggerWriter) EnableAccess(b bool) *MultiLoggerWriter

func (*MultiLoggerWriter) EnableConsole 

func (this *MultiLoggerWriter) EnableConsole(b bool) *MultiLoggerWriter

func (*MultiLoggerWriter) EnableError 

func (this *MultiLoggerWriter) EnableError(b bool) *MultiLoggerWriter

func (*MultiLoggerWriter) EnableLogFiles 

func (this *MultiLoggerWriter) EnableLogFiles(b bool) *MultiLoggerWriter

func (*MultiLoggerWriter) EnableSyslog 

func (this *MultiLoggerWriter) EnableSyslog(b bool) *MultiLoggerWriter

func (*MultiLoggerWriter) EnableSystem 

func (this *MultiLoggerWriter) EnableSystem(b bool) *MultiLoggerWriter

func (*MultiLoggerWriter) ErrorLog 

func (this *MultiLoggerWriter) ErrorLog(s string) *MultiLoggerWriter

func (*MultiLoggerWriter) ErrorTag 

func (this *MultiLoggerWriter) ErrorTag(s string) *MultiLoggerWriter

func (*MultiLoggerWriter) ErrorUseFlags 

func (this *MultiLoggerWriter) ErrorUseFlags(b bool) *MultiLoggerWriter

func (*MultiLoggerWriter) FlagsDate 

func (this *MultiLoggerWriter) FlagsDate(b bool) *MultiLoggerWriter

func (*MultiLoggerWriter) FlagsLongFile 

func (this *MultiLoggerWriter) FlagsLongFile(b bool) *MultiLoggerWriter

func (*MultiLoggerWriter) FlagsShortFile 

func (this *MultiLoggerWriter) FlagsShortFile(b bool) *MultiLoggerWriter

func (*MultiLoggerWriter) FlagsStandard 

func (this *MultiLoggerWriter) FlagsStandard(b bool) *MultiLoggerWriter

func (*MultiLoggerWriter) FlagsTime 

func (this *MultiLoggerWriter) FlagsTime(b bool) *MultiLoggerWriter

func (*MultiLoggerWriter) FlagsUTC 

func (this *MultiLoggerWriter) FlagsUTC(b bool) *MultiLoggerWriter

func (*MultiLoggerWriter) GetAccessBufWriter 

func (this *MultiLoggerWriter) GetAccessBufWriter() io.Writer

func (*MultiLoggerWriter) GetAccessLogger 

func (this *MultiLoggerWriter) GetAccessLogger() *log.Logger

func (*MultiLoggerWriter) GetAccessWriter 

func (this *MultiLoggerWriter) GetAccessWriter() io.Writer

func (*MultiLoggerWriter) GetConfig 

func (this *MultiLoggerWriter) GetConfig() (b []byte, err error)

func (*MultiLoggerWriter) GetErrorBufWriter 

func (this *MultiLoggerWriter) GetErrorBufWriter() io.Writer

func (*MultiLoggerWriter) GetErrorLogger 

func (this *MultiLoggerWriter) GetErrorLogger() *log.Logger

func (*MultiLoggerWriter) GetErrorWriter 

func (this *MultiLoggerWriter) GetErrorWriter() io.Writer

func (*MultiLoggerWriter) GetSystemBufWriter 

func (this *MultiLoggerWriter) GetSystemBufWriter() io.Writer

func (*MultiLoggerWriter) GetSystemLogger 

func (this *MultiLoggerWriter) GetSystemLogger() *log.Logger

func (*MultiLoggerWriter) GetSystemWriter 

func (this *MultiLoggerWriter) GetSystemWriter() io.Writer

func (*MultiLoggerWriter) Init 

func (this *MultiLoggerWriter) Init() *MultiLoggerWriter

func (*MultiLoggerWriter) LogDir 

func (this *MultiLoggerWriter) LogDir(s string) *MultiLoggerWriter

func (*MultiLoggerWriter) RecoveryStack 

func (this *MultiLoggerWriter) RecoveryStack(b bool) *MultiLoggerWriter

func (*MultiLoggerWriter) SaveConfig 

func (this *MultiLoggerWriter) SaveConfig(cf string) (err error)

func (*MultiLoggerWriter) SyslogHost 

func (this *MultiLoggerWriter) SyslogHost(s string) *MultiLoggerWriter

func (*MultiLoggerWriter) SyslogPort 

func (this *MultiLoggerWriter) SyslogPort(s string) *MultiLoggerWriter

func (*MultiLoggerWriter) SyslogProt 

func (this *MultiLoggerWriter) SyslogProt(s string) *MultiLoggerWriter

func (*MultiLoggerWriter) SyslogTag 

func (this *MultiLoggerWriter) SyslogTag(s string) *MultiLoggerWriter

func (*MultiLoggerWriter) SystemLog 

func (this *MultiLoggerWriter) SystemLog(s string) *MultiLoggerWriter

func (*MultiLoggerWriter) SystemTag 

func (this *MultiLoggerWriter) SystemTag(s string) *MultiLoggerWriter

func (*MultiLoggerWriter) SystemUseFlags 

func (this *MultiLoggerWriter) SystemUseFlags(b bool) *MultiLoggerWriter

type MultiWriter 

type MultiWriter struct {
	// contains filtered or unexported fields
}

MultiWriter is an io.Writer that sends output to multiple destinations.

func NewMultiWriter 

func NewMultiWriter() (this *MultiWriter)

NewMultiWriter returns an initialized MultiWriter object.

func (*MultiWriter) AddConsole 

func (this *MultiWriter) AddConsole(h *os.File)

AddConsole appends a console to a MultiWriter writer. Consoles are treated separately as they shouldn't be closed on termination.

func (*MultiWriter) AddFile 

func (this *MultiWriter) AddFile(f string)

AddFile appends a file to a MultiWriter writer.

func (*MultiWriter) AddWriter 

func (this *MultiWriter) AddWriter(w io.Writer)

AddWriter appends a writer to a MultiWriter writer.

func (*MultiWriter) Close 

func (this *MultiWriter) Close()

Close syncs and closes underlying file writers in MultiWriter.

func (*MultiWriter) Count 

func (this *MultiWriter) Count() (n int)

Count returns the number of writers in MultiWriter.

func (*MultiWriter) Println 

func (this *MultiWriter) Println(t ...interface{})

Println writes to each writer in default format with trailing newline.

func (*MultiWriter) Sync 

func (this *MultiWriter) Sync()

Sync syncs underlying file and console writers in MultiWriter.

func (*MultiWriter) Write 

func (this *MultiWriter) Write(b []byte) (n int, err error)

Write writes output to each writer in MultiWriter.

func (*MultiWriter) WriteError 

func (this *MultiWriter) WriteError(e error)

WriteError converts an error to []byte and then calls Write.

func (*MultiWriter) WriteString 

func (this *MultiWriter) WriteString(s string) (n int, err error)

WriteString converts string input to []byte and then calls Write.

Source Files

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