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package clients
import (
"errors"
"fmt"
"runtime"
"strings"
"github.com/mimecast/dtail/internal/clients/handlers"
"github.com/mimecast/dtail/internal/config"
"github.com/mimecast/dtail/internal/io/dlog"
"github.com/mimecast/dtail/internal/omode"
)
// CatClient is a client for returning a whole file from the beginning to the end.
type CatClient struct {
baseClient
}
// NewCatClient returns a new cat client.
func NewCatClient(args config.Args) (*CatClient, error) {
if args.RegexStr != "" {
return nil, errors.New("Can't use regex with 'cat' operating mode")
}
args.Mode = omode.CatClient
c := CatClient{
baseClient: baseClient{
Args: args,
throttleCh: make(chan struct{}, args.ConnectionsPerCPU*runtime.NumCPU()),
retry: false,
runtime: newClientRuntimeBoundary(config.CurrentRuntime()),
},
}
c.init()
c.makeConnections(c)
return &c, nil
}
func (c CatClient) makeHandler(server string) handlers.Handler {
return handlers.NewClientHandler(server)
}
func (c CatClient) makeCommands() (commands []string) {
regex, err := c.Regex.Serialize()
if err != nil {
dlog.Client.FatalPanic(err)
}
for _, file := range strings.Split(c.What, ",") {
commands = append(commands, fmt.Sprintf("%s:%s %s %s",
c.Mode.String(), c.Args.SerializeOptions(), file, regex))
}
return
}
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