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package ebpf
import (
"encoding"
"fmt"
"strings"
)
// Assert that customEncoding implements the correct interfaces.
var (
_ encoding.BinaryMarshaler = (*customEncoding)(nil)
_ encoding.BinaryUnmarshaler = (*customEncoding)(nil)
)
type customEncoding struct {
data string
}
func (ce *customEncoding) MarshalBinary() ([]byte, error) {
return []byte(strings.ToUpper(ce.data)), nil
}
func (ce *customEncoding) UnmarshalBinary(buf []byte) error {
ce.data = string(buf)
return nil
}
// ExampleMarshaler shows how to use custom encoding with map methods.
func Example_customMarshaler() {
hash, err := NewMap(&MapSpec{
Type: Hash,
KeySize: 5,
ValueSize: 4,
MaxEntries: 10,
})
if err != nil {
panic(err)
}
defer hash.Close()
if err := hash.Put(&customEncoding{"hello"}, uint32(111)); err != nil {
panic(err)
}
var (
key customEncoding
value uint32
entries = hash.Iterate()
)
for entries.Next(&key, &value) {
fmt.Printf("key: %s, value: %d\n", key.data, value)
}
if err := entries.Err(); err != nil {
panic(err)
}
// Output: key: HELLO, value: 111
}
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