Base64 constructs a field that encodes the given value as a padded base64 string.

Bool constructs a Field with the given key and value.

Duration constructs a Field with the given key and value.

Err calls `Error` on the context `Logger`.

Error constructs a Field that lazily stores err.Error() under the key "error".

Float64 constructs a Field with the given key and value.

FromContext returns a `Logger` instance associated with `ctx`, or `NopLogger` if no `Logger` instance could be found.

Int constructs a Field with the given key and value.

Int64 constructs a Field with the given key and value.

JoinFields joins all slices into a single slice.

Nest takes a key and a variadic number of Fields and creates a nested namespace.

NopLogger returns a no-op `Logger`.

Object constructs a field with the given key and an arbitrary object.

ParseLevel parses a string representation of a log level.

Skip constructs a no-op Field.

String constructs a Field with the given key and value.

Stringer constructs a Field with the given key and the output of the value's String method.

Time constructs a Field with the given key and value.

Trace calls `Trace` on the context `Logger`.

Uint constructs a Field with the given key and value.

Uint64 constructs a Field with the given key and value.

Uintptr constructs a Field with the given key and value.

Warn calls `Warning` on the context `Logger`.

WithContext returns a copy of parent in which the `Logger` is stored.

LevelError displays only logs with error level.

LevelTrace displays logs with trace level (and above).

LevelWarning displays logs with warning level (and above).

Context carries the log line context (level, timestamp, ...).

A Field is a marshaling operation used to add a key-value pair to a logger's context.

Formatter converts a log line to a specific format, such as JSON.

Logger is an interface for app loggers.

Printer outputs a log line somewhere, such as stdout, syslog, 3rd party service.

Level defines log severity.