From 9fe2f6b365b891bfaf064fdbb22e0c1bf08955ff Mon Sep 17 00:00:00 2001
From: Ethan Frey <ethanfrey@users.noreply.github.com>
Date: Sun, 6 Aug 2017 21:21:52 +0200
Subject: [PATCH] Setup first tx, error code

---
 modules/etc/errors.go  | 23 +++++++++++++++++++++++
 modules/etc/handler.go |  6 ++++++
 modules/etc/store.go   |  1 +
 modules/etc/tx.go      | 41 +++++++++++++++++++++++++++++++++++++++++
 4 files changed, 71 insertions(+)
 create mode 100644 modules/etc/errors.go
 create mode 100644 modules/etc/handler.go
 create mode 100644 modules/etc/store.go
 create mode 100644 modules/etc/tx.go

diff --git a/modules/etc/errors.go b/modules/etc/errors.go
new file mode 100644
index 000000000..9eab3cf57
--- /dev/null
+++ b/modules/etc/errors.go
@@ -0,0 +1,23 @@
+package etc
+
+import (
+	"fmt"
+
+	abci "github.com/tendermint/abci/types"
+
+	"github.com/tendermint/basecoin/errors"
+)
+
+var (
+	errMissingData = fmt.Errorf("All tx fields must be filled")
+
+	malformed = abci.CodeType_EncodingError
+)
+
+//nolint
+func ErrMissingData() errors.TMError {
+	return errors.WithCode(errMissingData, malformed)
+}
+func IsMissingDataErr(err error) bool {
+	return errors.IsSameError(errMissingData, err)
+}
diff --git a/modules/etc/handler.go b/modules/etc/handler.go
new file mode 100644
index 000000000..e9c06620d
--- /dev/null
+++ b/modules/etc/handler.go
@@ -0,0 +1,6 @@
+package etc
+
+const (
+	// Name of the module for registering it
+	Name = "etc"
+)
diff --git a/modules/etc/store.go b/modules/etc/store.go
new file mode 100644
index 000000000..825503c2e
--- /dev/null
+++ b/modules/etc/store.go
@@ -0,0 +1 @@
+package etc
diff --git a/modules/etc/tx.go b/modules/etc/tx.go
new file mode 100644
index 000000000..80dbf4da0
--- /dev/null
+++ b/modules/etc/tx.go
@@ -0,0 +1,41 @@
+package etc
+
+import (
+	"github.com/tendermint/basecoin"
+	"github.com/tendermint/go-wire/data"
+)
+
+// nolint
+const (
+	TypeSet    = Name + "/set"
+	TypeGet    = Name + "/get"
+	TypeRemove = Name + "/remove"
+
+	ByteSet    = 0xF0
+	ByteGet    = 0xF1
+	ByteRemove = 0xF2
+)
+
+func init() {
+	basecoin.TxMapper.
+		RegisterImplementation(SetTx{}, TypeSet, ByteSet)
+}
+
+// SetTx sets a key-value pair
+type SetTx struct {
+	Key   data.Bytes `json:"key"`
+	Value data.Bytes `json:"value"`
+}
+
+// Wrap - fulfills TxInner interface
+func (t SetTx) Wrap() basecoin.Tx {
+	return basecoin.Tx{t}
+}
+
+// ValidateBasic makes sure it is valid
+func (t SetTx) ValidateBasic() error {
+	if len(t.Key) == 0 || len(t.Value) == 0 {
+		return ErrMissingData()
+	}
+	return nil
+}