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authorWim <wim@42.be>2021-10-16 23:11:32 +0200
committerWim <wim@42.be>2021-10-16 23:23:24 +0200
commit20f6c05ec50739d31f4dbe9fde0d223f2c43f6e8 (patch)
tree230edca06449a8d1755f08aabf45a03e07e6f17c /vendor/github.com/mattermost/logr/v2/config/config.go
parent57fce93af7f64f025cec6f3ed6088163086bc9fe (diff)
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Update vendor
Diffstat (limited to 'vendor/github.com/mattermost/logr/v2/config/config.go')
-rw-r--r--vendor/github.com/mattermost/logr/v2/config/config.go209
1 files changed, 209 insertions, 0 deletions
diff --git a/vendor/github.com/mattermost/logr/v2/config/config.go b/vendor/github.com/mattermost/logr/v2/config/config.go
new file mode 100644
index 00000000..a93b7a25
--- /dev/null
+++ b/vendor/github.com/mattermost/logr/v2/config/config.go
@@ -0,0 +1,209 @@
+package config
+
+import (
+ "context"
+ "encoding/json"
+ "errors"
+ "fmt"
+ "io"
+ "os"
+ "strings"
+
+ "github.com/mattermost/logr/v2"
+ "github.com/mattermost/logr/v2/formatters"
+ "github.com/mattermost/logr/v2/targets"
+)
+
+type TargetCfg struct {
+ Type string `json:"type"` // one of "console", "file", "tcp", "syslog", "none".
+ Options json.RawMessage `json:"options,omitempty"`
+ Format string `json:"format"` // one of "json", "plain", "gelf"
+ FormatOptions json.RawMessage `json:"format_options,omitempty"`
+ Levels []logr.Level `json:"levels"`
+ MaxQueueSize int `json:"maxqueuesize,omitempty"`
+}
+
+type ConsoleOptions struct {
+ Out string `json:"out"` // one of "stdout", "stderr"
+}
+
+type TargetFactory func(targetType string, options json.RawMessage) (logr.Target, error)
+type FormatterFactory func(format string, options json.RawMessage) (logr.Formatter, error)
+
+type Factories struct {
+ targetFactory TargetFactory // can be nil
+ formatterFactory FormatterFactory // can be nil
+}
+
+var removeAll = func(ti logr.TargetInfo) bool { return true }
+
+// ConfigureTargets replaces the current list of log targets with a new one based on a map
+// of name->TargetCfg. The map of TargetCfg's would typically be serialized from a JSON
+// source or can be programmatically created.
+//
+// An optional set of factories can be provided which will be called to create any target
+// types or formatters not built-in.
+//
+// To append log targets to an existing config, use `(*Logr).AddTarget` or
+// `(*Logr).AddTargetFromConfig` instead.
+func ConfigureTargets(lgr *logr.Logr, config map[string]TargetCfg, factories *Factories) error {
+ if err := lgr.RemoveTargets(context.Background(), removeAll); err != nil {
+ return fmt.Errorf("error removing existing log targets: %w", err)
+ }
+
+ if factories == nil {
+ factories = &Factories{nil, nil}
+ }
+
+ for name, tcfg := range config {
+ target, err := newTarget(tcfg.Type, tcfg.Options, factories.targetFactory)
+ if err != nil {
+ return fmt.Errorf("error creating log target %s: %w", name, err)
+ }
+
+ if target == nil {
+ continue
+ }
+
+ formatter, err := newFormatter(tcfg.Format, tcfg.FormatOptions, factories.formatterFactory)
+ if err != nil {
+ return fmt.Errorf("error creating formatter for log target %s: %w", name, err)
+ }
+
+ filter := newFilter(tcfg.Levels)
+ qSize := tcfg.MaxQueueSize
+ if qSize == 0 {
+ qSize = logr.DefaultMaxQueueSize
+ }
+
+ if err = lgr.AddTarget(target, name, filter, formatter, qSize); err != nil {
+ return fmt.Errorf("error adding log target %s: %w", name, err)
+ }
+ }
+ return nil
+}
+
+func newFilter(levels []logr.Level) logr.Filter {
+ filter := &logr.CustomFilter{}
+ for _, lvl := range levels {
+ filter.Add(lvl)
+ }
+ return filter
+}
+
+func newTarget(targetType string, options json.RawMessage, factory TargetFactory) (logr.Target, error) {
+ switch strings.ToLower(targetType) {
+ case "console":
+ c := ConsoleOptions{}
+ if len(options) != 0 {
+ if err := json.Unmarshal(options, &c); err != nil {
+ return nil, fmt.Errorf("error decoding console target options: %w", err)
+ }
+ }
+ var w io.Writer
+ switch c.Out {
+ case "stderr":
+ w = os.Stderr
+ case "stdout", "":
+ w = os.Stdout
+ default:
+ return nil, fmt.Errorf("invalid console target option '%s'", c.Out)
+ }
+ return targets.NewWriterTarget(w), nil
+ case "file":
+ fo := targets.FileOptions{}
+ if len(options) == 0 {
+ return nil, errors.New("missing file target options")
+ }
+ if err := json.Unmarshal(options, &fo); err != nil {
+ return nil, fmt.Errorf("error decoding file target options: %w", err)
+ }
+ if err := fo.CheckValid(); err != nil {
+ return nil, fmt.Errorf("invalid file target options: %w", err)
+ }
+ return targets.NewFileTarget(fo), nil
+ case "tcp":
+ to := targets.TcpOptions{}
+ if len(options) == 0 {
+ return nil, errors.New("missing TCP target options")
+ }
+ if err := json.Unmarshal(options, &to); err != nil {
+ return nil, fmt.Errorf("error decoding TCP target options: %w", err)
+ }
+ if err := to.CheckValid(); err != nil {
+ return nil, fmt.Errorf("invalid TCP target options: %w", err)
+ }
+ return targets.NewTcpTarget(&to), nil
+ case "syslog":
+ so := targets.SyslogOptions{}
+ if len(options) == 0 {
+ return nil, errors.New("missing SysLog target options")
+ }
+ if err := json.Unmarshal(options, &so); err != nil {
+ return nil, fmt.Errorf("error decoding Syslog target options: %w", err)
+ }
+ if err := so.CheckValid(); err != nil {
+ return nil, fmt.Errorf("invalid SysLog target options: %w", err)
+ }
+ return targets.NewSyslogTarget(&so)
+ case "none":
+ return nil, nil
+ default:
+ if factory != nil {
+ t, err := factory(targetType, options)
+ if err != nil || t == nil {
+ return nil, fmt.Errorf("error from target factory: %w", err)
+ }
+ return t, nil
+ }
+ }
+ return nil, fmt.Errorf("target type '%s' is unrecogized", targetType)
+}
+
+func newFormatter(format string, options json.RawMessage, factory FormatterFactory) (logr.Formatter, error) {
+ switch strings.ToLower(format) {
+ case "json":
+ j := formatters.JSON{}
+ if len(options) != 0 {
+ if err := json.Unmarshal(options, &j); err != nil {
+ return nil, fmt.Errorf("error decoding JSON formatter options: %w", err)
+ }
+ if err := j.CheckValid(); err != nil {
+ return nil, fmt.Errorf("invalid JSON formatter options: %w", err)
+ }
+ }
+ return &j, nil
+ case "plain":
+ p := formatters.Plain{}
+ if len(options) != 0 {
+ if err := json.Unmarshal(options, &p); err != nil {
+ return nil, fmt.Errorf("error decoding Plain formatter options: %w", err)
+ }
+ if err := p.CheckValid(); err != nil {
+ return nil, fmt.Errorf("invalid plain formatter options: %w", err)
+ }
+ }
+ return &p, nil
+ case "gelf":
+ g := formatters.Gelf{}
+ if len(options) != 0 {
+ if err := json.Unmarshal(options, &g); err != nil {
+ return nil, fmt.Errorf("error decoding Gelf formatter options: %w", err)
+ }
+ if err := g.CheckValid(); err != nil {
+ return nil, fmt.Errorf("invalid GELF formatter options: %w", err)
+ }
+ }
+ return &g, nil
+
+ default:
+ if factory != nil {
+ f, err := factory(format, options)
+ if err != nil || f == nil {
+ return nil, fmt.Errorf("error from formatter factory: %w", err)
+ }
+ return f, nil
+ }
+ }
+ return nil, fmt.Errorf("format '%s' is unrecogized", format)
+}