ed907535e3
* Separate files for InMemory * Start using separate repos for collaborating objects * Before Updating schema * Separate various repos
58 lines
1.5 KiB
Go
58 lines
1.5 KiB
Go
package postgres
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import (
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"errors"
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"github.com/jmoiron/sqlx"
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_ "github.com/lib/pq"
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"github.com/vulcanize/vulcanizedb/pkg/config"
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"github.com/vulcanize/vulcanizedb/pkg/core"
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)
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type DB struct {
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*sqlx.DB
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node core.Node
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nodeId int64
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}
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var (
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ErrDBInsertFailed = errors.New("postgres: insert failed")
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ErrDBDeleteFailed = errors.New("postgres: delete failed")
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ErrDBConnectionFailed = errors.New("postgres: db connection failed")
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ErrUnableToSetNode = errors.New("postgres: unable to set node")
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)
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func NewDB(databaseConfig config.Database, node core.Node) (*DB, error) {
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connectString := config.DbConnectionString(databaseConfig)
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db, err := sqlx.Connect("postgres", connectString)
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if err != nil {
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return &DB{}, ErrDBConnectionFailed
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}
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pg := DB{DB: db, node: node}
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err = pg.CreateNode(&node)
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if err != nil {
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return &DB{}, ErrUnableToSetNode
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}
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return &pg, nil
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}
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func (db *DB) CreateNode(node *core.Node) error {
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var nodeId int64
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err := db.QueryRow(
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`INSERT INTO nodes (genesis_block, network_id, node_id, client_name)
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VALUES ($1, $2, $3, $4)
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ON CONFLICT (genesis_block, network_id, node_id)
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DO UPDATE
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SET genesis_block = $1,
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network_id = $2,
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node_id = $3,
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client_name = $4
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RETURNING id`,
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node.GenesisBlock, node.NetworkId, node.Id, node.ClientName).Scan(&nodeId)
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if err != nil {
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return ErrUnableToSetNode
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}
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db.nodeId = nodeId
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return nil
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}
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