mirror of
https://github.com/nspcc-dev/neo-go.git
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97 lines
3.1 KiB
Go
97 lines
3.1 KiB
Go
package config
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import (
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"fmt"
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"os"
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"time"
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"github.com/nspcc-dev/neo-go/pkg/config/netmode"
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"gopkg.in/yaml.v3"
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)
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const (
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// UserAgentWrapper is a string that user agent string should be wrapped into.
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UserAgentWrapper = "/"
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// UserAgentPrefix is a prefix used to generate user agent string.
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UserAgentPrefix = "NEO-GO:"
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// UserAgentFormat is a formatted string used to generate user agent string.
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UserAgentFormat = UserAgentWrapper + UserAgentPrefix + "%s" + UserAgentWrapper
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// DefaultMaxIteratorResultItems is the default upper bound of traversed
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// iterator items per JSON-RPC response. It covers both session-based and
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// naive iterators.
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DefaultMaxIteratorResultItems = 100
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// DefaultMaxFindResultItems is the default maximum number of resulting
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// contract states items that can be retrieved by `findstates` JSON-RPC handler.
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DefaultMaxFindResultItems = 100
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// DefaultMaxFindStorageResultItems is the default maximum number of resulting
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// contract storage items that can be retrieved by `findstorge` JSON-RPC handler.
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DefaultMaxFindStorageResultItems = 50
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// DefaultMaxNEP11Tokens is the default maximum number of resulting NEP11 tokens
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// that can be traversed by `getnep11balances` JSON-RPC handler.
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DefaultMaxNEP11Tokens = 100
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)
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// Version is the version of the node, set at the build time.
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var Version string
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// Config top level struct representing the config
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// for the node.
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type Config struct {
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ProtocolConfiguration ProtocolConfiguration `yaml:"ProtocolConfiguration"`
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ApplicationConfiguration ApplicationConfiguration `yaml:"ApplicationConfiguration"`
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}
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// GenerateUserAgent creates a user agent string based on the build time environment.
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func (c Config) GenerateUserAgent() string {
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return fmt.Sprintf(UserAgentFormat, Version)
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}
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// Blockchain generates a Blockchain configuration based on Protocol and
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// Application settings.
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func (c Config) Blockchain() Blockchain {
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return Blockchain{
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ProtocolConfiguration: c.ProtocolConfiguration,
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Ledger: c.ApplicationConfiguration.Ledger,
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}
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}
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// Load attempts to load the config from the given
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// path for the given netMode.
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func Load(path string, netMode netmode.Magic) (Config, error) {
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configPath := fmt.Sprintf("%s/protocol.%s.yml", path, netMode)
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return LoadFile(configPath)
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}
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// LoadFile loads config from the provided path. It also applies backwards compatibility
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// fixups if necessary.
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func LoadFile(configPath string) (Config, error) {
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if _, err := os.Stat(configPath); os.IsNotExist(err) {
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return Config{}, fmt.Errorf("config '%s' doesn't exist", configPath)
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}
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configData, err := os.ReadFile(configPath)
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if err != nil {
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return Config{}, fmt.Errorf("unable to read config: %w", err)
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}
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config := Config{
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ApplicationConfiguration: ApplicationConfiguration{
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P2P: P2P{
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PingInterval: 30 * time.Second,
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PingTimeout: 90 * time.Second,
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},
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},
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}
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err = yaml.Unmarshal(configData, &config)
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if err != nil {
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return Config{}, fmt.Errorf("failed to unmarshal config YAML: %w", err)
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}
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err = config.ProtocolConfiguration.Validate()
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if err != nil {
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return Config{}, err
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}
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return config, nil
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}
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