forked from cerc-io/ipld-eth-server
reorganizing omni directory and beginning light watcher work
This commit is contained in:
Ian Norden
@@ -0,0 +1,185 @@
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// VulcanizeDB
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// Copyright © 2018 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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package repository
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import (
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"errors"
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"fmt"
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"strings"
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"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres"
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"github.com/vulcanize/vulcanizedb/pkg/omni/shared/types"
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)
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type MethodRepository interface {
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PersistResult(method types.Result, contractAddr, contractName string) error
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CreateMethodTable(contractAddr string, method types.Result) (bool, error)
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CreateContractSchema(contractAddr string) (bool, error)
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}
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type methodRepository struct {
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*postgres.DB
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}
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func NewMethodRepository(db *postgres.DB) *methodRepository {
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return &methodRepository{
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DB: db,
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}
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}
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func (d *methodRepository) PersistResult(method types.Result, contractAddr, contractName string) error {
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if len(method.Args) != len(method.Inputs) {
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return errors.New("error: given number of inputs does not match number of method arguments")
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}
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if len(method.Return) != 1 {
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return errors.New("error: given number of outputs does not match number of method return values")
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}
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_, err := d.CreateContractSchema(contractAddr)
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if err != nil {
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return err
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}
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_, err = d.CreateMethodTable(contractAddr, method)
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if err != nil {
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return err
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}
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return d.persistResult(method, contractAddr, contractName)
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}
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// Creates a custom postgres command to persist logs for the given event
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func (d *methodRepository) persistResult(method types.Result, contractAddr, contractName string) error {
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// Begin postgres string
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pgStr := fmt.Sprintf("INSERT INTO c%s.%s_method ", strings.ToLower(contractAddr), strings.ToLower(method.Name))
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pgStr = pgStr + "(token_name, block"
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// Pack the corresponding variables in a slice
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var data []interface{}
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data = append(data,
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contractName,
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method.Block)
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// Iterate over method args and return value, adding names
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// to the string and pushing values to the slice
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counter := 0 // Keep track of number of inputs
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for i, arg := range method.Args {
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counter += 1
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pgStr = pgStr + fmt.Sprintf(", %s_", strings.ToLower(arg.Name)) // Add underscore after to avoid any collisions with reserved pg words
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data = append(data, method.Inputs[i])
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}
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counter += 1
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pgStr = pgStr + ", returned) VALUES ($1, $2"
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data = append(data, method.Output)
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// For each input entry we created we add its postgres command variable to the string
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for i := 0; i < counter; i++ {
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pgStr = pgStr + fmt.Sprintf(", $%d", i+3)
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}
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pgStr = pgStr + ")"
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_, err := d.DB.Exec(pgStr, data...)
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if err != nil {
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return err
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}
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return nil
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}
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// Checks for event table and creates it if it does not already exist
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func (d *methodRepository) CreateMethodTable(contractAddr string, method types.Result) (bool, error) {
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tableExists, err := d.checkForTable(contractAddr, method.Name)
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if err != nil {
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return false, err
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}
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if !tableExists {
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err = d.newMethodTable(contractAddr, method)
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if err != nil {
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return false, err
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}
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}
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return !tableExists, nil
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}
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// Creates a table for the given contract and event
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func (d *methodRepository) newMethodTable(contractAddr string, method types.Result) error {
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// Begin pg string
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pgStr := fmt.Sprintf("CREATE TABLE IF NOT EXISTS c%s.%s_method ", strings.ToLower(contractAddr), strings.ToLower(method.Name))
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pgStr = pgStr + "(id SERIAL, token_name CHARACTER VARYING(66) NOT NULL, block INTEGER NOT NULL,"
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// Iterate over method inputs and outputs, using their name and pgType to grow the string
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for _, arg := range method.Args {
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pgStr = pgStr + fmt.Sprintf(" %s_ %s NOT NULL,", strings.ToLower(arg.Name), arg.PgType)
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}
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pgStr = pgStr + fmt.Sprintf(" returned %s NOT NULL)", method.Return[0].PgType)
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_, err := d.DB.Exec(pgStr)
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return err
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}
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// Checks if a table already exists for the given contract and event
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func (d *methodRepository) checkForTable(contractAddr string, methodName string) (bool, error) {
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pgStr := fmt.Sprintf("SELECT EXISTS (SELECT 1 FROM information_schema.tables WHERE table_schema = 'c%s' AND table_name = '%s_method')", strings.ToLower(contractAddr), strings.ToLower(methodName))
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var exists bool
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err := d.DB.Get(&exists, pgStr)
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return exists, err
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}
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// Checks for contract schema and creates it if it does not already exist
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func (d *methodRepository) CreateContractSchema(contractAddr string) (bool, error) {
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if contractAddr == "" {
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return false, errors.New("error: no contract address specified")
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}
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schemaExists, err := d.checkForSchema(contractAddr)
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if err != nil {
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return false, err
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}
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if !schemaExists {
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err = d.newContractSchema(contractAddr)
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if err != nil {
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return false, err
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}
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}
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return !schemaExists, nil
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}
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// Creates a schema for the given contract
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func (d *methodRepository) newContractSchema(contractAddr string) error {
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_, err := d.DB.Exec("CREATE SCHEMA IF NOT EXISTS c" + strings.ToLower(contractAddr))
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return err
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}
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// Checks if a schema already exists for the given contract
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func (d *methodRepository) checkForSchema(contractAddr string) (bool, error) {
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pgStr := fmt.Sprintf("SELECT EXISTS (SELECT schema_name FROM information_schema.schemata WHERE schema_name = 'c%s')", strings.ToLower(contractAddr))
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var exists bool
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err := d.DB.Get(&exists, pgStr)
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return exists, err
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}
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@@ -0,0 +1,111 @@
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// VulcanizeDB
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// Copyright © 2018 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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package repository_test
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import (
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"fmt"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres"
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"github.com/vulcanize/vulcanizedb/pkg/omni/shared/constants"
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"github.com/vulcanize/vulcanizedb/pkg/omni/shared/contract"
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"github.com/vulcanize/vulcanizedb/pkg/omni/shared/helpers/test_helpers"
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"github.com/vulcanize/vulcanizedb/pkg/omni/shared/repository"
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"github.com/vulcanize/vulcanizedb/pkg/omni/shared/types"
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)
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var _ = Describe("Repository", func() {
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var db *postgres.DB
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var dataStore repository.MethodRepository
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var con *contract.Contract
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var err error
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var mockResult types.Result
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BeforeEach(func() {
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con = test_helpers.SetupTusdContract([]string{}, []string{"balanceOf"})
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method := con.Methods["balanceOf"]
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mockResult = types.Result{
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Method: method,
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PgType: method.Return[0].PgType,
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Inputs: make([]interface{}, 1),
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Output: new(interface{}),
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Block: 6707323,
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}
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mockResult.Inputs[0] = "0xfE9e8709d3215310075d67E3ed32A380CCf451C8"
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mockResult.Output = "66386309548896882859581786"
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db, _ = test_helpers.SetupDBandBC()
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dataStore = repository.NewMethodRepository(db)
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})
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AfterEach(func() {
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test_helpers.TearDown(db)
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})
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Describe("CreateContractSchema", func() {
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It("Creates schema if it doesn't exist", func() {
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created, err := dataStore.CreateContractSchema(constants.TusdContractAddress)
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Expect(err).ToNot(HaveOccurred())
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Expect(created).To(Equal(true))
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created, err = dataStore.CreateContractSchema(constants.TusdContractAddress)
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Expect(err).ToNot(HaveOccurred())
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Expect(created).To(Equal(false))
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})
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})
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Describe("CreateMethodTable", func() {
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It("Creates table if it doesn't exist", func() {
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created, err := dataStore.CreateContractSchema(constants.TusdContractAddress)
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Expect(err).ToNot(HaveOccurred())
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Expect(created).To(Equal(true))
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created, err = dataStore.CreateMethodTable(constants.TusdContractAddress, mockResult)
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Expect(err).ToNot(HaveOccurred())
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Expect(created).To(Equal(true))
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created, err = dataStore.CreateMethodTable(constants.TusdContractAddress, mockResult)
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Expect(err).ToNot(HaveOccurred())
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Expect(created).To(Equal(false))
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})
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})
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Describe("PersistResult", func() {
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It("Persists result from method polling in custom pg table", func() {
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err = dataStore.PersistResult(mockResult, con.Address, con.Name)
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Expect(err).ToNot(HaveOccurred())
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scanStruct := test_helpers.BalanceOf{}
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err = db.QueryRowx(fmt.Sprintf("SELECT * FROM c%s.balanceof_method", constants.TusdContractAddress)).StructScan(&scanStruct)
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expectedLog := test_helpers.BalanceOf{
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Id: 1,
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TokenName: "TrueUSD",
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Block: 6707323,
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Address: "0xfE9e8709d3215310075d67E3ed32A380CCf451C8",
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Balance: "66386309548896882859581786",
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}
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Expect(scanStruct).To(Equal(expectedLog))
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})
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It("Fails with empty result", func() {
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err = dataStore.PersistResult(types.Result{}, con.Address, con.Name)
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Expect(err).To(HaveOccurred())
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})
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})
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})
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@@ -0,0 +1,35 @@
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// VulcanizeDB
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// Copyright © 2018 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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||||
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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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package repository_test
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import (
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"io/ioutil"
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"log"
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"testing"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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)
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func TestRepository(t *testing.T) {
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RegisterFailHandler(Fail)
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RunSpecs(t, "Shared Repository Suite Test")
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}
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var _ = BeforeSuite(func() {
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log.SetOutput(ioutil.Discard)
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})
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