e90b21bc8e
1. add bond,auction, nameserivce module 2. update to v0.12.2 ethermint version 3. fix the test cases 4. add gql server
53 lines
1.2 KiB
Go
53 lines
1.2 KiB
Go
//
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// Copyright 2020 Wireline, Inc.
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//
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package utils
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import (
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"bytes"
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"errors"
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canonicalJson "github.com/gibson042/canonicaljson-go"
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cbor "github.com/ipfs/go-ipld-cbor"
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mh "github.com/multiformats/go-multihash"
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)
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// GenerateHash returns the hash of the canonicalized JSON input.
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func GenerateHash(json map[string]interface{}) (string, []byte, error) {
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content, err := canonicalJson.Marshal(json)
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if err != nil {
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return "", nil, err
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}
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cid, err := CIDFromJSONBytes(content)
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if err != nil {
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return "", nil, err
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}
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return cid, content, nil
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}
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// CIDFromJSONBytes returns CID (cbor) for json (as bytes).
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func CIDFromJSONBytes(content []byte) (string, error) {
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cid, err := cbor.FromJSON(bytes.NewReader(content), mh.SHA2_256, -1)
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if err != nil {
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return "", err
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}
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return cid.String(), nil
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}
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// GetAttributeAsString returns a map attribute as string, if possible.
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func GetAttributeAsString(obj map[string]interface{}, attr string) (string, error) {
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if value, ok := obj[attr]; ok {
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if valueStr, ok := value.(string); ok {
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return valueStr, nil
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}
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return "", errors.New("attribute not of string type")
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}
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return "", errors.New("attribute not found")
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}
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