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config.go
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config.go
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package ipfshttp
import (
"encoding/json"
"errors"
"fmt"
"time"
"github.com/elastos/Elastos.NET.Hive.Cluster/config"
ma "github.com/multiformats/go-multiaddr"
)
const configKey = "ipfshttp"
// Default values for Config.
const (
DefaultNodeAddr = "/ip4/127.0.0.1/tcp/5001"
DefaultConnectSwarmsDelay = 30 * time.Second
DefaultPinMethod = "refs"
DefaultIPFSRequestTimeout = 5 * time.Minute
DefaultPinTimeout = 24 * time.Hour
DefaultUnpinTimeout = 3 * time.Hour
)
// Config is used to initialize a Connector and allows to customize
// its behaviour. It implements the config.ComponentConfig interface.
type Config struct {
config.Saver
// Host/Port for the IPFS daemon.
NodeAddr ma.Multiaddr
// ConnectSwarmsDelay specifies how long to wait after startup before
// attempting to open connections from this peer's IPFS daemon to the
// IPFS daemons of other peers.
ConnectSwarmsDelay time.Duration
// "pin" or "refs". "pin" uses a "pin/add" call. "refs" uses a
// "refs -r" call followed by "pin/add". "refs" allows fetching in
// parallel but should be used with GC disabled.
PinMethod string
// IPFS Daemon HTTP Client POST timeout
IPFSRequestTimeout time.Duration
// Pin Operation timeout
PinTimeout time.Duration
// Unpin Operation timeout
UnpinTimeout time.Duration
}
type jsonConfig struct {
NodeMultiaddress string `json:"node_multiaddress"`
ConnectSwarmsDelay string `json:"connect_swarms_delay"`
PinMethod string `json:"pin_method"`
IPFSRequestTimeout string `json:"ipfs_request_timeout"`
PinTimeout string `json:"pin_timeout"`
UnpinTimeout string `json:"unpin_timeout"`
// Fields below are only to maintain compatibility
// They can be removed in future
ProxyListenMultiaddress string `json:"proxy_listen_multiaddress,omitempty"`
ProxyReadTimeout string `json:"proxy_read_timeout,omitempty"`
ProxyReadHeaderTimeout string `json:"proxy_read_header_timeout,omitempty"`
ProxyWriteTimeout string `json:"proxy_write_timeout,omitempty"`
ProxyIdleTimeout string `json:"proxy_idle_timeout,omitempty"`
}
// ConfigKey provides a human-friendly identifier for this type of Config.
func (cfg *Config) ConfigKey() string {
return configKey
}
// Default sets the fields of this Config to sensible default values.
func (cfg *Config) Default() error {
node, _ := ma.NewMultiaddr(DefaultNodeAddr)
cfg.NodeAddr = node
cfg.ConnectSwarmsDelay = DefaultConnectSwarmsDelay
cfg.PinMethod = DefaultPinMethod
cfg.IPFSRequestTimeout = DefaultIPFSRequestTimeout
cfg.PinTimeout = DefaultPinTimeout
cfg.UnpinTimeout = DefaultUnpinTimeout
return nil
}
// Validate checks that the fields of this Config have sensible values,
// at least in appearance.
func (cfg *Config) Validate() error {
var err error
if cfg.NodeAddr == nil {
err = errors.New("ipfshttp.node_multiaddress not set")
}
if cfg.ConnectSwarmsDelay < 0 {
err = errors.New("ipfshttp.connect_swarms_delay is invalid")
}
switch cfg.PinMethod {
case "refs", "pin":
default:
err = errors.New("ipfshttp.pin_method invalid value")
}
if cfg.IPFSRequestTimeout < 0 {
err = errors.New("ipfshttp.ipfs_request_timeout invalid")
}
if cfg.PinTimeout < 0 {
err = errors.New("ipfshttp.pin_timeout invalid")
}
if cfg.UnpinTimeout < 0 {
err = errors.New("ipfshttp.unpin_timeout invalid")
}
return err
}
// LoadJSON parses a JSON representation of this Config as generated by ToJSON.
func (cfg *Config) LoadJSON(raw []byte) error {
jcfg := &jsonConfig{}
err := json.Unmarshal(raw, jcfg)
if err != nil {
logger.Error("Error unmarshaling ipfshttp config")
return err
}
cfg.Default()
nodeAddr, err := ma.NewMultiaddr(jcfg.NodeMultiaddress)
if err != nil {
return fmt.Errorf("error parsing ipfs_node_multiaddress: %s", err)
}
cfg.NodeAddr = nodeAddr
err = config.ParseDurations(
"ipfshttp",
&config.DurationOpt{Duration: jcfg.ConnectSwarmsDelay, Dst: &cfg.ConnectSwarmsDelay, Name: "connect_swarms_delay"},
&config.DurationOpt{Duration: jcfg.IPFSRequestTimeout, Dst: &cfg.IPFSRequestTimeout, Name: "ipfs_request_timeout"},
&config.DurationOpt{Duration: jcfg.PinTimeout, Dst: &cfg.PinTimeout, Name: "pin_timeout"},
&config.DurationOpt{Duration: jcfg.UnpinTimeout, Dst: &cfg.UnpinTimeout, Name: "unpin_timeout"},
)
if err != nil {
return err
}
config.SetIfNotDefault(jcfg.PinMethod, &cfg.PinMethod)
return cfg.Validate()
}
// ToJSON generates a human-friendly JSON representation of this Config.
func (cfg *Config) ToJSON() (raw []byte, err error) {
// Multiaddress String() may panic
defer func() {
if r := recover(); r != nil {
err = fmt.Errorf("%s", r)
}
}()
jcfg := &jsonConfig{}
// Set all configuration fields
jcfg.NodeMultiaddress = cfg.NodeAddr.String()
jcfg.ConnectSwarmsDelay = cfg.ConnectSwarmsDelay.String()
jcfg.PinMethod = cfg.PinMethod
jcfg.IPFSRequestTimeout = cfg.IPFSRequestTimeout.String()
jcfg.PinTimeout = cfg.PinTimeout.String()
jcfg.UnpinTimeout = cfg.UnpinTimeout.String()
raw, err = config.DefaultJSONMarshal(jcfg)
return
}