97 lines
3.4 KiB
Go
97 lines
3.4 KiB
Go
// VulcanizeDB
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// Copyright © 2022 Vulcanize
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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// This file will contain functions to query the Beacon Chain Server.
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package beaconclient
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net/http"
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log "github.com/sirupsen/logrus"
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"github.com/vulcanize/ipld-eth-beacon-indexer/pkg/loghelper"
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)
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// Object to unmarshal the BlockRootResponse
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type BlockRootResponse struct {
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Data BlockRootMessage `json:"data"`
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}
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// Object to unmarshal the BlockRoot Message
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type BlockRootMessage struct {
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Root string `json:"root"`
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}
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// A helper function to query endpoints that utilize slots.
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func querySsz(endpoint string, slot string) ([]byte, int, error) {
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log.WithFields(log.Fields{"endpoint": endpoint}).Debug("Querying endpoint")
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client := &http.Client{}
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req, err := http.NewRequest("GET", endpoint, nil)
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if err != nil {
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loghelper.LogSlotError(slot, err).Error("Unable to create a request!")
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return nil, 0, fmt.Errorf("Unable to create a request!: %s", err.Error())
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}
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req.Header.Set("Accept", "application/octet-stream")
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response, err := client.Do(req)
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if err != nil {
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loghelper.LogSlotError(slot, err).Error("Unable to query Beacon Node!")
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return nil, 0, fmt.Errorf("Unable to query Beacon Node: %s", err.Error())
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}
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defer response.Body.Close()
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rc := response.StatusCode
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body, err := ioutil.ReadAll(response.Body)
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if err != nil {
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loghelper.LogSlotError(slot, err).Error("Unable to turn response into a []bytes array!")
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return nil, rc, fmt.Errorf("Unable to turn response into a []bytes array!: %s", err.Error())
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}
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return body, rc, nil
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}
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// A function to query the blockroot for a given slot.
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func queryBlockRoot(endpoint string, slot string) (string, error) {
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log.WithFields(log.Fields{"endpoint": endpoint}).Debug("Querying endpoint")
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client := &http.Client{}
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req, err := http.NewRequest("GET", endpoint, nil)
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if err != nil {
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loghelper.LogSlotError(slot, err).Error("Unable to create a request!")
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return "", fmt.Errorf("Unable to create a request!: %s", err.Error())
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}
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req.Header.Set("Accept", "application/json")
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response, err := client.Do(req)
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if err != nil {
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loghelper.LogSlotError(slot, err).Error("Unable to query Beacon Node!")
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return "", fmt.Errorf("Unable to query Beacon Node: %s", err.Error())
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}
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defer response.Body.Close()
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body, err := ioutil.ReadAll(response.Body)
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if err != nil {
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loghelper.LogSlotError(slot, err).Error("Unable to turn response into a []bytes array!")
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return "", fmt.Errorf("Unable to turn response into a []bytes array!: %s", err.Error())
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}
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resp := BlockRootResponse{}
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if err := json.Unmarshal(body, &resp); err != nil {
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loghelper.LogEndpoint(endpoint).WithFields(log.Fields{
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"rawMessage": string(body),
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"err": err,
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}).Error("Unable to unmarshal the block root")
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return "", err
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}
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return resp.Data.Root, nil
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}
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