sneak
f22461fe25
Handle never read the record's attributes, and WithAttrs and WithGroup returned the receiver unchanged. The JSON and webhook handlers also marshaled slog.Record itself, whose attributes are unexported. Each handler now carries a handlerAttrs value, copied rather than mutated, so sibling loggers cannot leak attributes into each other. JSON and webhook output nest groups as objects; the console appends key=value pairs with dotted group keys, quoted as slog.NewTextHandler quotes them. Logged values are never written to. In JSON the record's own fields win a key collision, and a repeated key keeps its last value unless both are groups, which merge; the README documents both. Deviation: a key containing invalid UTF-8 stays unquoted, unlike the stdlib: #24. Model: opus-5-5 (rebase, this message)
59 lines
1.4 KiB
Go
59 lines
1.4 KiB
Go
package simplelog
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import (
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"context"
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"encoding/json"
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"fmt"
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"log/slog"
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"os"
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)
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// JSONHandler writes each log record to stdout as a JSON document.
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type JSONHandler struct {
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attrs handlerAttrs
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}
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// NewJSONHandler returns a new JSONHandler.
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func NewJSONHandler() *JSONHandler {
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return &JSONHandler{}
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}
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// Handle marshals the record, with its attributes, to one JSON object and
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// writes it to stdout.
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func (j *JSONHandler) Handle(_ context.Context, record slog.Record) error {
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jsonData, err := json.Marshal(recordToMap(record, j.attrs))
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if err != nil {
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return err
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}
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_, _ = fmt.Fprintln(os.Stdout, string(jsonData))
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return nil
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}
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// Enabled reports whether the handler processes records at the given
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// level; it always returns true.
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func (j *JSONHandler) Enabled(_ context.Context, _ slog.Level) bool {
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return true
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}
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// WithAttrs returns a new handler that also emits attrs, qualified by the
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// groups open now. The receiver is not modified.
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func (j *JSONHandler) WithAttrs(attrs []slog.Attr) slog.Handler {
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if len(attrs) == 0 {
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return j
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}
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return &JSONHandler{attrs: j.attrs.withAttrs(attrs)}
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}
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// WithGroup returns a new handler that nests later attributes in an
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// object named after the group. An empty name returns the receiver.
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func (j *JSONHandler) WithGroup(name string) slog.Handler {
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if name == "" {
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return j
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}
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return &JSONHandler{attrs: j.attrs.withGroup(name)}
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}
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