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/*
* This file is part of the go-nft project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright 2021 Red Hat, Inc.
*
*/
package config
import (
"encoding/json"
"github.com/networkplumbing/go-nft/nft/schema"
)
type Config struct {
schema.Root
}
// New returns a new nftables config structure.
func New() *Config {
c := &Config{}
c.Nftables = []schema.Nftable{}
return c
}
// ToJSON returns the JSON encoding of the nftables config.
func (c *Config) ToJSON() ([]byte, error) {
return json.Marshal(*c)
}
// FromJSON decodes the provided JSON-encoded data and populates the nftables config.
func (c *Config) FromJSON(data []byte) error {
if err := json.Unmarshal(data, c); err != nil {
return err
}
return nil
}
// FlushRuleset adds a command to the nftables config that erases all the configuration when applied.
// It is commonly used as the first config instruction, followed by a declarative configuration.
// When used, any previous configuration is flushed away before adding the new one.
// Calling FlushRuleset updates the configuration and will take effect only
// when applied on the system.
func (c *Config) FlushRuleset() {
c.Nftables = append(c.Nftables, schema.Nftable{Flush: &schema.Objects{Ruleset: true}})
}
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