101 lines
2.4 KiB
Go
101 lines
2.4 KiB
Go
package basecoin
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import (
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"bytes"
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abci "github.com/tendermint/abci/types"
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"github.com/tendermint/go-wire/data"
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"github.com/tendermint/basecoin/types"
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)
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type Named interface {
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Name() string
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}
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type Checker interface {
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CheckTx(ctx Context, store types.KVStore, tx Tx) (Result, error)
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}
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type Deliver interface {
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DeliverTx(ctx Context, store types.KVStore, tx Tx) (Result, error)
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}
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type CheckerMiddle interface {
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CheckTx(ctx Context, store types.KVStore, tx Tx, next Checker) (Result, error)
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}
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type DeliverMiddle interface {
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DeliverTx(ctx Context, store types.KVStore, tx Tx, next Deliver) (Result, error)
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}
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// Handler is anything that processes a transaction
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type Handler interface {
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Checker
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Deliver
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Named
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// TODO: flesh these out as well
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// SetOption(store types.KVStore, key, value string) (log string)
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// InitChain(store types.KVStore, vals []*abci.Validator)
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// BeginBlock(store types.KVStore, hash []byte, header *abci.Header)
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// EndBlock(store types.KVStore, height uint64) abci.ResponseEndBlock
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}
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// Middleware is anything that wraps another handler to enhance functionality.
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//
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// You can use utilities in handlers to construct them, the interfaces
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// are exposed in the top-level package to avoid import loops.
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type Middleware interface {
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CheckerMiddle
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DeliverMiddle
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Named
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}
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// TODO: handle this in some secure way, only certain apps can add permissions
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type Permission struct {
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App string // Which app authorized this?
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Address []byte // App-specific identifier
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}
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// TODO: Context is a place-holder, soon we add some request data here from the
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// higher-levels (like tell an app who signed).
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// Trust me, we will need it like CallContext now...
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type Context struct {
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perms []Permission
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}
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// TOTALLY insecure. will redo later, but you get the point
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func (c Context) AddPermissions(perms ...Permission) Context {
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return Context{
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perms: append(c.perms, perms...),
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}
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}
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func (c Context) HasPermission(app string, addr []byte) bool {
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for _, p := range c.perms {
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if app == p.App && bytes.Equal(addr, p.Address) {
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return true
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}
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}
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return false
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}
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// New should give a fresh context, and know what info makes sense to carry over
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func (c Context) New() Context {
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return Context{}
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}
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// Result captures any non-error abci result
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// to make sure people use error for error cases
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type Result struct {
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Data data.Bytes
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Log string
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}
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func (r Result) ToABCI() abci.Result {
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return abci.Result{
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Data: r.Data,
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Log: r.Log,
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}
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}
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