/
preprocess.go
59 lines (50 loc) · 1.78 KB
/
preprocess.go
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// Copyright 2021 Optakt Labs OÜ
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
package rosetta
import (
"github.com/labstack/echo/v4"
"github.com/optakt/flow-dps/rosetta/identifier"
"github.com/optakt/flow-dps/rosetta/object"
"github.com/optakt/flow-dps/rosetta/request"
"github.com/optakt/flow-dps/rosetta/response"
)
// Preprocess implements the /construction/preprocess endpoint of the Rosetta Construction API.
// Preprocess receives a list of operations that should deterministically specify the
// intent of the transaction. Preprocess endpoint returns the `options` object that
// will be sent **unmodified** to /construction/metadata, effectively creating the metadata
// request.
// See https://www.rosetta-api.org/docs/ConstructionApi.html#constructionpreprocess
func (c *Construction) Preprocess(ctx echo.Context) error {
var req request.Preprocess
err := ctx.Bind(&req)
if err != nil {
return unpackError(err)
}
err = c.validate.Request(req)
if err != nil {
return formatError(err)
}
intent, err := c.transact.DeriveIntent(req.Operations)
if err != nil {
return apiError(intentDetermination, err)
}
res := response.Preprocess{
Options: object.Options{
AccountID: identifier.Account{
Address: intent.From.Hex(),
},
},
}
return ctx.JSON(statusOK, res)
}