/
app.go
111 lines (94 loc) · 2.52 KB
/
app.go
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package app
import (
"fmt"
"io"
"os"
"github.com/apple/foundationdb/bindings/go/src/fdb"
"github.com/apple/foundationdb/bindings/go/src/fdb/directory"
"github.com/pkg/errors"
"github.com/rs/zerolog"
"github.com/spf13/cobra"
"github.com/janderland/fdbq/engine"
"github.com/janderland/fdbq/engine/facade"
"github.com/janderland/fdbq/internal/app/fullscreen"
"github.com/janderland/fdbq/internal/app/headless"
"github.com/janderland/fdbq/parser/format"
)
var (
// Version can be set via build flags and
// defines the version printed for the
// `-v` flag.
Version string
// APIVersion can be set via the build flags
// and defines the API version FDB uses.
APIVersion = 620
flags *Flags
)
func init() {
flags = SetupFlags(FDBQ)
}
var FDBQ = &cobra.Command{
Use: "fdbq [flags] query ...",
Short: "fdbq is a query language for Foundation DB",
Version: Version,
RunE: func(cmd *cobra.Command, args []string) error {
if len(args) > 0 {
return errors.New("unexpected positional args")
}
log := zerolog.Nop()
if flags.Log {
var writer io.Writer = zerolog.ConsoleWriter{
Out: os.Stderr,
FormatLevel: func(_ interface{}) string { return "" },
}
if flags.Fullscreen() {
file, err := os.Create(flags.LogFile)
if err != nil {
return errors.Wrap(err, "failed to open logging file")
}
defer func() {
if err := file.Close(); err != nil {
fmt.Println(errors.Wrap(err, "failed to close logging file"))
}
}()
writer = file
}
log = zerolog.New(writer).With().Timestamp().Logger()
}
log.Log().Str("cluster file", flags.Cluster).Msg("connecting to DB")
if err := fdb.APIVersion(APIVersion); err != nil {
return errors.Wrap(err, "failed to set FDB API version")
}
db, err := fdb.OpenDatabase(flags.Cluster)
if err != nil {
return errors.Wrap(err, "failed to connect to DB")
}
eg := engine.New(
facade.NewTransactor(db, directory.Root()),
engine.ByteOrder(flags.ByteOrder()),
engine.Logger(log))
fmt := format.New(flags.FormatOpts()...)
out := os.Stdout
if flags.Fullscreen() {
app := fullscreen.App{
Engine: eg,
Format: fmt,
Log: log,
Out: out,
Write: flags.Write,
SingleOpts: flags.SingleOpts(),
RangeOpts: flags.RangeOpts(),
}
return app.Run(cmd.Context())
}
app := headless.App{
Engine: eg,
Format: fmt,
Out: out,
Write: flags.Write,
SingleOpts: flags.SingleOpts(),
RangeOpts: flags.RangeOpts(),
}
return app.Run(cmd.Context(), flags.Queries)
},
}