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-rw-r--r--node/errors.go63
1 files changed, 63 insertions, 0 deletions
diff --git a/node/errors.go b/node/errors.go
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index 0000000..2e0dadc
--- /dev/null
+++ b/node/errors.go
@@ -0,0 +1,63 @@
+// Copyright 2015 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package node
+
+import (
+ "errors"
+ "fmt"
+ "reflect"
+ "syscall"
+)
+
+var (
+ ErrDatadirUsed = errors.New("datadir already used by another process")
+ ErrNodeStopped = errors.New("node not started")
+ ErrNodeRunning = errors.New("node already running")
+ ErrServiceUnknown = errors.New("unknown service")
+
+ datadirInUseErrnos = map[uint]bool{11: true, 32: true, 35: true}
+)
+
+func convertFileLockError(err error) error {
+ if errno, ok := err.(syscall.Errno); ok && datadirInUseErrnos[uint(errno)] {
+ return ErrDatadirUsed
+ }
+ return err
+}
+
+// DuplicateServiceError is returned during Node startup if a registered service
+// constructor returns a service of the same type that was already started.
+type DuplicateServiceError struct {
+ Kind reflect.Type
+}
+
+// Error generates a textual representation of the duplicate service error.
+func (e *DuplicateServiceError) Error() string {
+ return fmt.Sprintf("duplicate service: %v", e.Kind)
+}
+
+// StopError is returned if a Node fails to stop either any of its registered
+// services or itself.
+type StopError struct {
+ Server error
+ Services map[reflect.Type]error
+}
+
+// Error generates a textual representation of the stop error.
+func (e *StopError) Error() string {
+ return fmt.Sprintf("server: %v, services: %v", e.Server, e.Services)
+}