struct Log::Emitter

Overview

Helper DSL module for emitting log entries with data.

Defined in:

log/main.cr

Instance Method Summary

Instance methods inherited from struct Struct

==(other) : Bool ==, hash(hasher) hash, inspect(io : IO) : Nil inspect, pretty_print(pp) : Nil pretty_print, to_s(io : IO) : Nil to_s

Instance methods inherited from struct Value

==(other : JSON::Any)
==(other : YAML::Any)
==(other) ==, dup dup

Instance methods inherited from class Object

! : Bool !, !=(other) !=, !~(other) !~, ==(other) ==, ===(other : JSON::Any)
===(other : YAML::Any)
===(other) ===, =~(other) =~, as(type : Class) as, as?(type : Class) as?, class class, dup dup, hash(hasher)
hash hash, in?(collection : Object) : Bool
in?(*values : Object) : Bool in?, inspect(io : IO) : Nil
inspect : String inspect, is_a?(type : Class) : Bool is_a?, itself itself, nil? : Bool nil?, not_nil! not_nil!, pretty_inspect(width = 79, newline = "\n", indent = 0) : String pretty_inspect, pretty_print(pp : PrettyPrint) : Nil pretty_print, responds_to?(name : Symbol) : Bool responds_to?, tap(&) tap, to_json(io : IO) : Nil
to_json : String to_json, to_pretty_json(indent : String = " ") : String
to_pretty_json(io : IO, indent : String = " ") : Nil to_pretty_json, to_s(io : IO) : Nil
to_s : String to_s, to_yaml(io : IO) : Nil
to_yaml : String to_yaml, try(&) try, unsafe_as(type : T.class) forall T unsafe_as

Class methods inherited from class Object

from_json(string_or_io, root : String)
from_json(string_or_io) from_json, from_yaml(string_or_io : String | IO) from_yaml

Instance Method Detail

def emit(message : String, data : Metadata | Hash | NamedTuple) : EntrySource

def emit(message : String) : EntrySource

Emits a logs entry with a message, and data attached to

Log.info &.emit("Program started")                         # No data, same as Log.info { "Program started" }
Log.info &.emit("User logged in", user_id: 42)             # With entry data
Log.info &.emit(action: "Logged in", user_id: 42)          # Empty string message, only data
Log.error exception: ex, &.emit("Oops", account: {id: 42}) # With data and exception

def emit(data : Metadata | Hash | NamedTuple) : EntrySource

def emit(message : String, **kwargs) : EntrySource

def emit(**kwargs) : EntrySource

© 2012–2021 Manas Technology Solutions.
Licensed under the Apache License, Version 2.0.
https://crystal-lang.org/api/1.2.1/Log/Emitter.html