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-rw-r--r--modules/caddyhttp/encode/gzip/gzip.go29
1 files changed, 25 insertions, 4 deletions
diff --git a/modules/caddyhttp/encode/gzip/gzip.go b/modules/caddyhttp/encode/gzip/gzip.go
index 0da5fc3..b08385a 100644
--- a/modules/caddyhttp/encode/gzip/gzip.go
+++ b/modules/caddyhttp/encode/gzip/gzip.go
@@ -3,6 +3,7 @@ package caddygzip
import (
"compress/flate"
"compress/gzip" // TODO: consider using https://github.com/klauspost/compress/gzip
+ "fmt"
"github.com/caddyserver/caddy2"
"github.com/caddyserver/caddy2/modules/caddyhttp/encode"
@@ -20,17 +21,37 @@ type Gzip struct {
Level int `json:"level,omitempty"`
}
-// NewEncoder returns a new gzip writer.
-func (g Gzip) NewEncoder() encode.Encoder {
- if g.Level <= flate.NoCompression {
+// Provision provisions g's configuration.
+func (g *Gzip) Provision(ctx caddy2.Context) error {
+ if g.Level == 0 {
g.Level = defaultGzipLevel
}
+ return nil
+}
+
+// Validate validates g's configuration.
+func (g Gzip) Validate() error {
+ if g.Level < flate.NoCompression {
+ return fmt.Errorf("quality too low; must be >= %d", flate.NoCompression)
+ }
if g.Level > flate.BestCompression {
- g.Level = flate.BestCompression
+ return fmt.Errorf("quality too high; must be <= %d", flate.BestCompression)
}
+ return nil
+}
+
+// NewEncoder returns a new gzip writer.
+func (g Gzip) NewEncoder() encode.Encoder {
writer, _ := gzip.NewWriterLevel(nil, g.Level)
return writer
}
// Informed from http://blog.klauspost.com/gzip-performance-for-go-webservers/
var defaultGzipLevel = 5
+
+// Interface guards
+var (
+ _ encode.Encoding = (*Gzip)(nil)
+ _ caddy2.Provisioner = (*Gzip)(nil)
+ _ caddy2.Validator = (*Gzip)(nil)
+)