Add Batch API for building and executing batched nftables commands.

contract/batch.go

@@ -0,0 +1,31 @@
+package contract
+
+import (
+	"git.kor-elf.net/kor-elf-shield/go-nftables-client/contract/batch"
+)
+
+// BatchBuilder is an API for building a batch of commands.
+type BatchBuilder interface {
+	// Clear clears all rules.
+	//
+	// This command is equivalent to:
+	//    nft flush ruleset
+	Clear() error
+
+	// Table returns an API for working with tables.
+	Table() batch.Table
+
+	// Chain returns an API for working with chains.
+	Chain() batch.Chain
+
+	// Rule returns an API for working with rules.
+	Rule() batch.Rule
+
+	// Build returns a batch of commands.
+	Build() Batch
+}
+
+type Batch interface {
+	// Args returns the arguments of the batch.
+	Args() []string
+}

contract/batch/chain.go

@@ -0,0 +1,46 @@
+package batch
+
+import (
+	chain2 "git.kor-elf.net/kor-elf-shield/go-nftables-client/chain"
+	"git.kor-elf.net/kor-elf-shield/go-nftables-client/family"
+)
+
+// Chain for working with chains.
+type Chain interface {
+	// Add adds a new chain.
+	//
+	// This command is equivalent to:
+	//     nft add chain (ip|ip6|inet|arp|bridge) {table_name} {chain_name}
+	//     nft add chain (ip|ip6|inet|arp|bridge) {table_name} {chain_name} '{ type (filter|route|nat) hook (ingress|prerouting|forward|input|output|postrouting|egress) priority (priority_value = int32) ;}'
+	//     nft add chain (ip|ip6|inet|arp|bridge) {table_name} {chain_name} '{ type filter hook (forward|input|output) priority (priority_value = int32) ; policy (accept|drop) ;}'
+	//     nft add chain (ip|ip6|inet|arp|bridge) {table_name} {chain_name} '{ type (filter|route|nat) hook (ingress|egress) device {device} priority (priority_value = int32) ;}'
+	Add(family family.Type, tableName string, chainName string, baseChain chain2.ChainOptions) error
+
+	// Create creates a new chain.
+	// Similar to the Add, but returns an error if the chain already exists.
+	//
+	// This command is equivalent to:
+	//     nft create chain (ip|ip6|inet|arp|bridge) {table_name} {chain_name}
+	//     nft create chain (ip|ip6|inet|arp|bridge) {table_name} {chain_name} '{ type (filter|route|nat) hook (ingress|prerouting|forward|input|output|postrouting|egress) priority (priority_value = int32) ;}'
+	//     nft create chain (ip|ip6|inet|arp|bridge) {table_name} {chain_name} '{ type filter hook (forward|input|output) priority (priority_value = int32) ; policy (accept|drop) ;}'
+	//     nft create chain (ip|ip6|inet|arp|bridge) {table_name} {chain_name} '{ type (filter|route|nat) hook (ingress|egress) device {device} priority (priority_value = int32) ;}'
+	Create(family family.Type, tableName string, chainName string, baseChain chain2.ChainOptions) error
+
+	// Delete deletes a chain.
+	//
+	// This command is equivalent to:
+	//     nft delete chain (ip|ip6|inet|arp|bridge) {table_name} {chain_name}
+	Delete(family family.Type, tableName string, chainName string) error
+
+	// Clear clears all rules in a chain.
+	//
+	// This command is equivalent to:
+	//     nft flush chain (ip|ip6|inet|arp|bridge) {table_name} {chain_name}
+	Clear(family family.Type, tableName string, chainName string) error
+
+	// Rename renames a chain.
+	//
+	// This command is equivalent to:
+	//     nft rename chain (ip|ip6|inet|arp|bridge) {table_name} {old_chain_name} {new_chain_name}
+	Rename(family family.Type, tableName string, oldChainName string, newChainName string) error
+}

contract/batch/rule.go

@@ -0,0 +1,31 @@
+package batch
+
+import "git.kor-elf.net/kor-elf-shield/go-nftables-client/family"
+
+// Rule is the interface for rule manipulation.
+type Rule interface {
+	// Add adds a new rule.
+	//
+	// This command is equivalent to:
+	// 		nft add rule (ip|ip6|inet|arp|bridge) {table_name} {chain_name} '{ expr }'
+	Add(family family.Type, tableName string, chainName string, expr ...string) error
+
+	// Insert inserts a new rule.
+	// Inserted rules are placed at the beginning of the chain, by default.
+	//
+	// This command is equivalent to:
+	// 		nft insert rule (ip|ip6|inet|arp|bridge) {table_name} {chain_name} '{ expr }'
+	Insert(family family.Type, tableName string, chainName string, expr ...string) error
+
+	// Replace replaces a rule.
+	//
+	// This command is equivalent to:
+	// 		nft replace rule (ip|ip6|inet|arp|bridge) {table_name} {chain_name} {handle} '{ expr }'
+	Replace(family family.Type, tableName string, chainName string, handle uint64, expr ...string) error
+
+	// Delete deletes a rule.
+	//
+	// This command is equivalent to:
+	// 		nft delete rule (ip|ip6|inet|arp|bridge) {table_name} {chain_name} {handle}
+	Delete(family family.Type, tableName string, chainName string, handle uint64) error
+}

contract/batch/table.go

@@ -0,0 +1,24 @@
+package batch
+
+import "git.kor-elf.net/kor-elf-shield/go-nftables-client/family"
+
+// Table for working with tables.
+type Table interface {
+	// AddTable adds a new table.
+	//
+	// This command is equivalent to:
+	//     nft add table (ip|ip6|inet|arp|bridge) {table_name}
+	Add(family family.Type, tableName string) error
+
+	// DeleteTable deletes a table.
+	//
+	// This command is equivalent to:
+	//     nft delete table (ip|ip6|inet|arp|bridge) {table_name}
+	Delete(family family.Type, tableName string) error
+
+	// ClearTable clears all rules in a table.
+	//
+	// This command is equivalent to:
+	//     nft flush table (ip|ip6|inet|arp|bridge) {table_name}
+	Clear(family family.Type, tableName string) error
+}

contract/nft.go

@@ -8,6 +8,9 @@ type NFT interface {
 	// You can execute your raw request.
 	Command() Command
 
+	// ExecuteBatch executes a batch of commands.
+	ExecuteBatch(batch Batch) error
+
 	// Clear clears all rules.
 	//
 	// This command is equivalent to: