Merge kortschak/config (hand-conflict)

This commit is contained in:
Barak Michener 2014-08-23 17:21:08 -04:00
commit e8c51f5df4
2 changed files with 77 additions and 84 deletions

View file

@ -29,6 +29,7 @@ import (
"os"
"path/filepath"
"runtime"
"time"
"github.com/barakmich/glog"
@ -50,11 +51,19 @@ import (
)
var (
tripleFile = flag.String("triples", "", "Triple File to load before going to REPL.")
tripleType = flag.String("format", "cquad", `Triple format to use for loading ("cquad" or "nquad").`)
cpuprofile = flag.String("prof", "", "Output profiling file.")
queryLanguage = flag.String("query_lang", "gremlin", "Use this parser as the query language.")
configFile = flag.String("config", "", "Path to an explicit configuration file.")
tripleFile = flag.String("triples", "", "Triple File to load before going to REPL.")
tripleType = flag.String("format", "cquad", `Triple format to use for loading ("cquad" or "nquad").`)
cpuprofile = flag.String("prof", "", "Output profiling file.")
queryLanguage = flag.String("query_lang", "gremlin", "Use this parser as the query language.")
configFile = flag.String("config", "", "Path to an explicit configuration file.")
databasePath = flag.String("dbpath", "/tmp/testdb", "Path to the database.")
databaseBackend = flag.String("db", "memstore", "Database Backend.")
replicationBackend = flag.String("replication", "single", "Replication method.")
host = flag.String("host", "127.0.0.1", "Host to listen on (defaults to all).")
loadSize = flag.Int("load_size", 10000, "Size of triplesets to load")
port = flag.String("port", "64210", "Port to listen on.")
readOnly = flag.Bool("read_only", false, "Disable writing via HTTP.")
timeout = flag.Duration("timeout", 30*time.Second, "Elapsed time until an individual query times out.")
)
// Filled in by `go build ldflags="-X main.VERSION `ver`"`.
@ -83,6 +92,58 @@ func init() {
flag.Usage = usage
}
func configFrom(file string) *config.Config {
// Find the file...
if file != "" {
if _, err := os.Stat(file); os.IsNotExist(err) {
glog.Fatalln("Cannot find specified configuration file", file, ", aborting.")
}
} else if _, err := os.Stat(os.Getenv("CAYLEY_CFG")); err == nil {
file = os.Getenv("CAYLEY_CFG")
} else if _, err := os.Stat("/etc/cayley.cfg"); err == nil {
file = "/etc/cayley.cfg"
}
if file == "" {
glog.Infoln("Couldn't find a config file in either $CAYLEY_CFG or /etc/cayley.cfg. Going by flag defaults only.")
}
cfg, err := config.Load(file)
if err != nil {
glog.Fatalln(err)
}
if cfg.DatabasePath == "" {
cfg.DatabasePath = *databasePath
}
if cfg.DatabaseType == "" {
cfg.DatabaseType = *databaseBackend
}
if cfg.ReplicationType == "" {
cfg.ReplicationType = *replicationBackend
}
if cfg.ListenHost == "" {
cfg.ListenHost = *host
}
if cfg.ListenPort == "" {
cfg.ListenPort = *port
}
if cfg.Timeout == 0 {
cfg.Timeout = *timeout
}
if cfg.LoadSize == 0 {
cfg.LoadSize = *loadSize
}
cfg.ReadOnly = cfg.ReadOnly || *readOnly
return cfg
}
func main() {
// No command? It's time for usage.
if len(os.Args) == 1 {
@ -101,7 +162,7 @@ func main() {
glog.Infoln(buildString)
}
cfg := config.ParseConfigFromFlagsAndFile(*configFile)
cfg := configFrom(*configFile)
if os.Getenv("GOMAXPROCS") == "" {
runtime.GOMAXPROCS(runtime.NumCPU())

View file

@ -16,15 +16,13 @@ package config
import (
"encoding/json"
"flag"
"fmt"
"os"
"strconv"
"time"
"github.com/barakmich/glog"
)
// Config defines the behavior of cayley database instances.
type Config struct {
DatabaseType string
DatabasePath string
@ -122,89 +120,23 @@ func (d *duration) MarshalJSON() ([]byte, error) {
return []byte(fmt.Sprintf("%q", *d)), nil
}
var (
databasePath = flag.String("dbpath", "/tmp/testdb", "Path to the database.")
databaseBackend = flag.String("db", "memstore", "Database Backend.")
replicationBackend = flag.String("replication", "single", "Replication method.")
host = flag.String("host", "127.0.0.1", "Host to listen on (defaults to all).")
loadSize = flag.Int("load_size", 10000, "Size of triplesets to load")
port = flag.String("port", "64210", "Port to listen on.")
readOnly = flag.Bool("read_only", false, "Disable writing via HTTP.")
timeout = flag.Duration("timeout", 30*time.Second, "Elapsed time until an individual query times out.")
)
func ParseConfigFromFile(filename string) *Config {
// Load reads a JSON-encoded config contained in the given file. A zero value
// config is returned if the filename is empty.
func Load(file string) (*Config, error) {
config := &Config{}
if filename == "" {
return config
if file == "" {
return config, nil
}
f, err := os.Open(filename)
f, err := os.Open(file)
if err != nil {
glog.Fatalln("Couldn't open config file", filename)
return nil, fmt.Errorf("could not open config file %q: %v", file, err)
}
defer f.Close()
dec := json.NewDecoder(f)
err = dec.Decode(config)
if err != nil {
glog.Fatalln("Couldn't read config file:", err)
return nil, fmt.Errorf("could not parse config file %q: %v", file, err)
}
return config
}
func ParseConfigFromFlagsAndFile(fileFlag string) *Config {
// Find the file...
var trueFilename string
if fileFlag != "" {
if _, err := os.Stat(fileFlag); os.IsNotExist(err) {
glog.Fatalln("Cannot find specified configuration file", fileFlag, ", aborting.")
} else {
trueFilename = fileFlag
}
} else {
if _, err := os.Stat(os.Getenv("CAYLEY_CFG")); err == nil {
trueFilename = os.Getenv("CAYLEY_CFG")
} else {
if _, err := os.Stat("/etc/cayley.cfg"); err == nil {
trueFilename = "/etc/cayley.cfg"
}
}
}
if trueFilename == "" {
glog.Infoln("Couldn't find a config file in either $CAYLEY_CFG or /etc/cayley.cfg. Going by flag defaults only.")
}
config := ParseConfigFromFile(trueFilename)
if config.DatabasePath == "" {
config.DatabasePath = *databasePath
}
if config.DatabaseType == "" {
config.DatabaseType = *databaseBackend
}
if config.ReplicationType == "" {
config.ReplicationType = *replicationBackend
}
if config.ListenHost == "" {
config.ListenHost = *host
}
if config.ListenPort == "" {
config.ListenPort = *port
}
if config.Timeout == 0 {
config.Timeout = *timeout
}
if config.LoadSize == 0 {
config.LoadSize = *loadSize
}
config.ReadOnly = config.ReadOnly || *readOnly
return config
return config, nil
}