1 files changed, 53 insertions, 0 deletions
diff --git a/internal/clients/catclient.go b/internal/clients/catclient.go
new file mode 100644
index 0000000..5ea701d
--- /dev/null
+++ b/internal/clients/catclient.go
@@ -0,0 +1,53 @@
+package clients
+
+import (
+	"errors"
+	"fmt"
+	"runtime"
+	"strings"
+
+	"github.com/mimecast/dtail/internal/clients/handlers"
+	"github.com/mimecast/dtail/internal/clients/remote"
+	"github.com/mimecast/dtail/internal/omode"
+	"github.com/mimecast/dtail/internal/ssh/client"
+
+	gossh "golang.org/x/crypto/ssh"
+)
+
+// 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 Args) (*CatClient, error) {
+	if args.Regex != "" {
+		return nil, errors.New("Can't use regex with 'cat' operating mode")
+	}
+
+	args.Regex = "."
+	args.Mode = omode.CatClient
+
+	c := CatClient{
+		baseClient: baseClient{
+			Args:       args,
+			stop:       make(chan struct{}),
+			stopped:    make(chan struct{}),
+			throttleCh: make(chan struct{}, args.ConnectionsPerCPU*runtime.NumCPU()),
+			retry:      false,
+		},
+	}
+
+	c.init(c)
+
+	return &c, nil
+}
+
+func (c CatClient) makeConnection(server string, sshAuthMethods []gossh.AuthMethod, hostKeyCallback *client.HostKeyCallback) *remote.Connection {
+	conn := remote.NewConnection(server, c.UserName, sshAuthMethods, hostKeyCallback)
+	conn.Handler = handlers.NewClientHandler(server, c.PingTimeout)
+	for _, file := range strings.Split(c.Files, ",") {
+		conn.Commands = append(conn.Commands, fmt.Sprintf("%s %s regex %s", c.Mode.String(), file, c.Regex))
+	}
+	return conn
+}