mirror of
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Retry sqlx transactions (#2203)
- Add exponential backoff method to MySQL datastore - Refactor queries using transaction to use backup. Fixes #845
This commit is contained in:
billcobbler
GitHub
parent
53256917a3
commit
44c40e4255
1
go.mod
1
go.mod
@ -11,6 +11,7 @@ require (
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github.com/aws/aws-sdk-go v1.26.8
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github.com/beevik/etree v1.1.0
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github.com/briandowns/spinner v0.0.0-20170614154858-48dbb65d7bd5
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github.com/cenkalti/backoff/v4 v4.0.0
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github.com/dgrijalva/jwt-go v3.2.0+incompatible
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github.com/e-dard/netbug v0.0.0-20151029172837-e64d308a0b20
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github.com/elazarl/go-bindata-assetfs v1.0.0
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2
go.sum
2
go.sum
@ -41,6 +41,8 @@ github.com/briandowns/spinner v0.0.0-20170614154858-48dbb65d7bd5 h1:osZyZB7J4kE1
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github.com/briandowns/spinner v0.0.0-20170614154858-48dbb65d7bd5/go.mod h1:hw/JEQBIE+c/BLI4aKM8UU8v+ZqrD3h7HC27kKt8JQU=
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github.com/c-bata/go-prompt v0.2.3 h1:jjCS+QhG/sULBhAaBdjb2PlMRVaKXQgn+4yzaauvs2s=
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github.com/c-bata/go-prompt v0.2.3/go.mod h1:VzqtzE2ksDBcdln8G7mk2RX9QyGjH+OVqOCSiVIqS34=
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github.com/cenkalti/backoff/v4 v4.0.0 h1:6VeaLF9aI+MAUQ95106HwWzYZgJJpZ4stumjj6RFYAU=
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github.com/cenkalti/backoff/v4 v4.0.0/go.mod h1:eEew/i+1Q6OrCDZh3WiXYv3+nJwBASZ8Bog/87DQnVg=
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github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
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github.com/crewjam/saml v0.0.0-20190521120225-344d075952c9/go.mod h1:w5eu+HNtubx+kRpQL6QFT2F3yIFfYVe6+EzOFVU7Hko=
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github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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@ -26,10 +26,6 @@ func (ds *Datastore) PendingEmailChange(uid uint, newEmail, token string) error
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// ConfirmPendingEmailChange finds email change record, updates user with new email,
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// then deletes change record if everything succeeds.
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func (ds *Datastore) ConfirmPendingEmailChange(id uint, token string) (newEmail string, err error) {
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var (
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tx *sqlx.Tx
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success bool // indicates all db operations success if true
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)
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changeRecord := struct {
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ID uint
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UserID uint `db:"user_id"`
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@ -44,42 +40,36 @@ func (ds *Datastore) ConfirmPendingEmailChange(id uint, token string) (newEmail
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return "", errors.Wrap(err, "email change")
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}
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tx, err = ds.db.Beginx()
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if err != nil {
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return "", errors.Wrap(err, "begin transaction to change email")
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}
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defer func() {
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if success {
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if err = tx.Commit(); err == nil {
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return // success
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}
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err = errors.Wrap(err, "commit transaction for email change")
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tx.Rollback()
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}
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}()
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query := `
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UPDATE users SET
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email = ?
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WHERE id = ?
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err = ds.withRetryTxx(func(tx *sqlx.Tx) error {
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query := `
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UPDATE users SET
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email = ?
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WHERE id = ?
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`
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results, err := tx.Exec(query, changeRecord.NewEmail, changeRecord.UserID)
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results, err := tx.Exec(query, changeRecord.NewEmail, changeRecord.UserID)
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if err != nil {
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return errors.Wrap(err, "updating user's email")
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}
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rowsAffected, err := results.RowsAffected()
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if err != nil {
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return errors.Wrap(err, "fetching affected rows updating user's email")
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}
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if rowsAffected == 0 {
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return notFound("User").WithID(changeRecord.UserID)
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}
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_, err = tx.Exec("DELETE FROM email_changes WHERE id = ?", changeRecord.ID)
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if err != nil {
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return errors.Wrap(err, "deleting email change")
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}
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return nil
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})
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if err != nil {
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return "", errors.Wrap(err, "updating user's email")
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return "", err
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}
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rowsAffected, err := results.RowsAffected()
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if err != nil {
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return "", errors.Wrap(err, "fetching affected rows updating user's email")
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}
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if rowsAffected == 0 {
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return "", notFound("User").WithID(changeRecord.UserID)
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}
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_, err = tx.Exec("DELETE FROM email_changes WHERE id = ?", changeRecord.ID)
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if err != nil {
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return "", errors.Wrap(err, "deleting email change")
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}
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success = true // cause things to be committed in defer func
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return changeRecord.NewEmail, nil
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return changeRecord.NewEmail, err
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}
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@ -174,93 +174,79 @@ func (d *Datastore) SaveHost(host *kolide.Host) error {
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logger_tls_period = ?
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WHERE id = ?
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`
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tx, err := d.db.Beginx()
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if err != nil {
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return errors.Wrap(err, "creating transaction")
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}
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results, err := tx.Exec(sqlStatement,
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host.DetailUpdateTime,
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host.NodeKey,
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host.HostName,
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host.UUID,
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host.Platform,
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host.OsqueryVersion,
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host.OSVersion,
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host.Uptime,
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host.PhysicalMemory,
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host.CPUType,
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host.CPUSubtype,
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host.CPUBrand,
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host.CPUPhysicalCores,
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host.HardwareVendor,
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host.HardwareModel,
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host.HardwareVersion,
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host.HardwareSerial,
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host.ComputerName,
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host.PrimaryNetworkInterfaceID,
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host.Build,
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host.PlatformLike,
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host.CodeName,
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host.CPULogicalCores,
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host.SeenTime,
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host.DistributedInterval,
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host.ConfigTLSRefresh,
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host.LoggerTLSPeriod,
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host.ID)
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if err != nil {
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tx.Rollback()
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return errors.Wrap(err, "executing main SQL statement")
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}
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rowsAffected, err := results.RowsAffected()
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if err != nil {
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tx.Rollback()
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return errors.Wrap(err, "rows affected updating host")
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}
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if rowsAffected == 0 {
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tx.Rollback()
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return notFound("Host").WithID(host.ID)
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}
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host.NetworkInterfaces, err = updateNicsForHost(tx, host)
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if err != nil {
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tx.Rollback()
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return errors.Wrap(err, "updating nics")
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}
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if err = removedUnusedNics(tx, host); err != nil {
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tx.Rollback()
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return errors.Wrap(err, "removing unused nics")
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}
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if needsUpdate := host.ResetPrimaryNetwork(); needsUpdate {
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results, err = tx.Exec(
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"UPDATE hosts SET primary_ip_id = ? WHERE id = ?",
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err := d.withRetryTxx(func(tx *sqlx.Tx) error {
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results, err := tx.Exec(sqlStatement,
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host.DetailUpdateTime,
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host.NodeKey,
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host.HostName,
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host.UUID,
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host.Platform,
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host.OsqueryVersion,
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host.OSVersion,
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host.Uptime,
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host.PhysicalMemory,
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host.CPUType,
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host.CPUSubtype,
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host.CPUBrand,
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host.CPUPhysicalCores,
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host.HardwareVendor,
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host.HardwareModel,
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host.HardwareVersion,
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host.HardwareSerial,
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host.ComputerName,
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host.PrimaryNetworkInterfaceID,
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host.ID,
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)
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host.Build,
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host.PlatformLike,
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host.CodeName,
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host.CPULogicalCores,
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host.SeenTime,
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host.DistributedInterval,
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host.ConfigTLSRefresh,
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host.LoggerTLSPeriod,
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host.ID)
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if err != nil {
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tx.Rollback()
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return errors.Wrap(err, "resetting primary network")
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return errors.Wrap(err, "executing main SQL statement")
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}
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rowsAffected, err = results.RowsAffected()
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rowsAffected, err := results.RowsAffected()
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if err != nil {
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tx.Rollback()
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return errors.Wrap(err, "rows affected resetting primary network")
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return errors.Wrap(err, "rows affected updating host")
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}
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if rowsAffected == 0 {
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tx.Rollback()
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return notFound("Host").WithID(host.ID)
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}
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}
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if err = tx.Commit(); err != nil {
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tx.Rollback()
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return errors.Wrap(err, "committing transaction")
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}
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return nil
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host.NetworkInterfaces, err = updateNicsForHost(tx, host)
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if err != nil {
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return errors.Wrap(err, "updating nics")
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}
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if err = removedUnusedNics(tx, host); err != nil {
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return errors.Wrap(err, "removing unused nics")
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}
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if needsUpdate := host.ResetPrimaryNetwork(); needsUpdate {
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results, err = tx.Exec(
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"UPDATE hosts SET primary_ip_id = ? WHERE id = ?",
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host.PrimaryNetworkInterfaceID,
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host.ID,
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)
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if err != nil {
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return errors.Wrap(err, "resetting primary network")
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}
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rowsAffected, err = results.RowsAffected()
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if err != nil {
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return errors.Wrap(err, "rows affected resetting primary network")
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}
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if rowsAffected == 0 {
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return notFound("Host").WithID(host.ID)
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}
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}
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return nil
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})
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return err
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}
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func (d *Datastore) DeleteHost(hid uint) error {
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@ -2,7 +2,6 @@ package mysql
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import (
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"database/sql"
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"fmt"
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"time"
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"github.com/jmoiron/sqlx"
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@ -11,25 +10,8 @@ import (
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)
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func (d *Datastore) ApplyLabelSpecs(specs []*kolide.LabelSpec) (err error) {
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tx, err := d.db.Beginx()
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if err != nil {
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return errors.Wrap(err, "begin ApplyLabelSpecs transaction")
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}
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defer func() {
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if err != nil {
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rbErr := tx.Rollback()
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// It seems possible that there might be a case in
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// which the error we are dealing with here was thrown
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// by the call to tx.Commit(), and the docs suggest
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// this call would then result in sql.ErrTxDone.
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if rbErr != nil && rbErr != sql.ErrTxDone {
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panic(fmt.Sprintf("got err '%s' rolling back after err '%s'", rbErr, err))
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}
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}
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}()
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sql := `
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err = d.withRetryTxx(func(tx *sqlx.Tx) error {
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sql := `
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INSERT INTO labels (
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name,
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description,
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@ -45,23 +27,25 @@ func (d *Datastore) ApplyLabelSpecs(specs []*kolide.LabelSpec) (err error) {
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label_type = VALUES(label_type),
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deleted = false
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`
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stmt, err := tx.Prepare(sql)
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if err != nil {
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return errors.Wrap(err, "prepare ApplyLabelSpecs insert")
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}
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for _, s := range specs {
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if s.Name == "" {
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return errors.New("label name must not be empty")
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}
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_, err := stmt.Exec(s.Name, s.Description, s.Query, s.Platform, s.LabelType)
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stmt, err := tx.Prepare(sql)
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if err != nil {
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return errors.Wrap(err, "exec ApplyLabelSpecs insert")
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return errors.Wrap(err, "prepare ApplyLabelSpecs insert")
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}
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}
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err = tx.Commit()
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return errors.Wrap(err, "commit ApplyLabelSpecs transaction")
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for _, s := range specs {
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if s.Name == "" {
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return errors.New("label name must not be empty")
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}
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_, err := stmt.Exec(s.Name, s.Description, s.Query, s.Platform, s.LabelType)
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if err != nil {
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return errors.Wrap(err, "exec ApplyLabelSpecs insert")
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}
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}
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return nil
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})
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return errors.Wrap(err, "ApplyLabelSpecs transaction")
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}
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func (d *Datastore) GetLabelSpecs() ([]*kolide.LabelSpec, error) {
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@ -10,6 +10,7 @@ import (
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"time"
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"github.com/WatchBeam/clock"
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"github.com/cenkalti/backoff/v4"
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"github.com/go-kit/kit/log"
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"github.com/go-sql-driver/mysql"
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"github.com/jmoiron/sqlx"
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@ -50,6 +51,41 @@ func (d *Datastore) getTransaction(opts []kolide.OptionalArg) dbfunctions {
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return result
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}
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type txFn func(*sqlx.Tx) error
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// withRetryTxx provides a common way to commit/rollback a txFn wrapped in a retry with exponential backoff
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func (d *Datastore) withRetryTxx(fn txFn) (err error) {
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operation := func() error {
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tx, err := d.db.Beginx()
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if err != nil {
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return errors.Wrap(err, "creating transaction")
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}
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defer func() {
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if p := recover(); p != nil {
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tx.Rollback()
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panic(p)
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}
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}()
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err = fn(tx)
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if err != nil {
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rbErr := tx.Rollback()
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if rbErr != nil && rbErr != sql.ErrTxDone {
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panic(fmt.Sprintf("got err '%s' rolling back after err '%s'", rbErr, err))
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}
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} else {
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err = tx.Commit()
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}
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|
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return errors.Wrap(err, "committing transaction")
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}
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bo := backoff.NewExponentialBackOff()
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bo.MaxElapsedTime = 5 * time.Second
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return backoff.Retry(operation, bo)
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}
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// New creates an MySQL datastore.
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func New(config config.MysqlConfig, c clock.Clock, opts ...DBOption) (*Datastore, error) {
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options := &dbOptions{
|
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@ -10,33 +10,17 @@ import (
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)
|
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|
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func (d *Datastore) ApplyPackSpecs(specs []*kolide.PackSpec) (err error) {
|
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tx, err := d.db.Beginx()
|
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if err != nil {
|
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return errors.Wrap(err, "begin ApplyPackSpec transaction")
|
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}
|
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|
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defer func() {
|
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if err != nil {
|
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rbErr := tx.Rollback()
|
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// It seems possible that there might be a case in
|
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// which the error we are dealing with here was thrown
|
||||
// by the call to tx.Commit(), and the docs suggest
|
||||
// this call would then result in sql.ErrTxDone.
|
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if rbErr != nil && rbErr != sql.ErrTxDone {
|
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panic(fmt.Sprintf("got err '%s' rolling back after err '%s'", rbErr, err))
|
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err = d.withRetryTxx(func(tx *sqlx.Tx) error {
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for _, spec := range specs {
|
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if err := applyPackSpec(tx, spec); err != nil {
|
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return errors.Wrapf(err, "applying pack '%s'", spec.Name)
|
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}
|
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}
|
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}()
|
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|
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for _, spec := range specs {
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err = applyPackSpec(tx, spec)
|
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if err != nil {
|
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return errors.Wrapf(err, "applying pack '%s'", spec.Name)
|
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}
|
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}
|
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return nil
|
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})
|
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|
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err = tx.Commit()
|
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return errors.Wrap(err, "commit transaction")
|
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return err
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}
|
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|
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func applyPackSpec(tx *sqlx.Tx, spec *kolide.PackSpec) error {
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@ -121,44 +105,77 @@ func applyPackSpec(tx *sqlx.Tx, spec *kolide.PackSpec) error {
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}
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func (d *Datastore) GetPackSpecs() (specs []*kolide.PackSpec, err error) {
|
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tx, err := d.db.Beginx()
|
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if err != nil {
|
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return nil, errors.Wrap(err, "begin GetPackSpecs transaction")
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}
|
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err = d.withRetryTxx(func(tx *sqlx.Tx) error {
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// Get basic specs
|
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query := "SELECT id, name, description, platform FROM packs"
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if err := tx.Select(&specs, query); err != nil {
|
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return errors.Wrap(err, "get packs")
|
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}
|
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|
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defer func() {
|
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if err != nil {
|
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rbErr := tx.Rollback()
|
||||
// It seems possible that there might be a case in
|
||||
// which the error we are dealing with here was thrown
|
||||
// by the call to tx.Commit(), and the docs suggest
|
||||
// this call would then result in sql.ErrTxDone.
|
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if rbErr != nil && rbErr != sql.ErrTxDone {
|
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panic(fmt.Sprintf("got err '%s' rolling back after err '%s'", rbErr, err))
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// Load targets
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for _, spec := range specs {
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query = `
|
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SELECT l.name
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FROM labels l JOIN pack_targets pt
|
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WHERE pack_id = ? AND pt.type = ? AND pt.target_id = l.id
|
||||
`
|
||||
if err := tx.Select(&spec.Targets.Labels, query, spec.ID, kolide.TargetLabel); err != nil {
|
||||
return errors.Wrap(err, "get pack targets")
|
||||
}
|
||||
}
|
||||
}()
|
||||
|
||||
// Get basic specs
|
||||
query := "SELECT id, name, description, platform FROM packs"
|
||||
if err := tx.Select(&specs, query); err != nil {
|
||||
return nil, errors.Wrap(err, "get packs")
|
||||
// Load queries
|
||||
for _, spec := range specs {
|
||||
query = `
|
||||
SELECT
|
||||
query_name, name, description, ` + "`interval`" + `,
|
||||
snapshot, removed, shard, platform, version
|
||||
FROM scheduled_queries
|
||||
WHERE pack_id = ?
|
||||
`
|
||||
if err := tx.Select(&spec.Queries, query, spec.ID); err != nil {
|
||||
return errors.Wrap(err, "get pack queries")
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
})
|
||||
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Load targets
|
||||
for _, spec := range specs {
|
||||
return specs, nil
|
||||
}
|
||||
|
||||
func (d *Datastore) GetPackSpec(name string) (spec *kolide.PackSpec, err error) {
|
||||
err = d.withRetryTxx(func(tx *sqlx.Tx) error {
|
||||
// Get basic spec
|
||||
var specs []*kolide.PackSpec
|
||||
query := "SELECT id, name, description, platform FROM packs WHERE name = ?"
|
||||
if err := tx.Select(&specs, query, name); err != nil {
|
||||
return errors.Wrap(err, "get packs")
|
||||
}
|
||||
if len(specs) == 0 {
|
||||
return notFound("Pack").WithName(name)
|
||||
}
|
||||
if len(specs) > 1 {
|
||||
return errors.Errorf("expected 1 pack row, got %d", len(specs))
|
||||
}
|
||||
|
||||
spec = specs[0]
|
||||
|
||||
// Load targets
|
||||
query = `
|
||||
SELECT l.name
|
||||
FROM labels l JOIN pack_targets pt
|
||||
WHERE pack_id = ? AND pt.type = ? AND pt.target_id = l.id
|
||||
`
|
||||
if err := tx.Select(&spec.Targets.Labels, query, spec.ID, kolide.TargetLabel); err != nil {
|
||||
return nil, errors.Wrap(err, "get pack targets")
|
||||
return errors.Wrap(err, "get pack targets")
|
||||
}
|
||||
}
|
||||
|
||||
// Load queries
|
||||
for _, spec := range specs {
|
||||
// Load queries
|
||||
query = `
|
||||
SELECT
|
||||
query_name, name, description, ` + "`interval`" + `,
|
||||
@ -167,77 +184,14 @@ FROM scheduled_queries
|
||||
WHERE pack_id = ?
|
||||
`
|
||||
if err := tx.Select(&spec.Queries, query, spec.ID); err != nil {
|
||||
return nil, errors.Wrap(err, "get pack queries")
|
||||
return errors.Wrap(err, "get pack queries")
|
||||
}
|
||||
}
|
||||
|
||||
err = tx.Commit()
|
||||
return nil
|
||||
})
|
||||
|
||||
if err != nil {
|
||||
return nil, errors.Wrap(err, "commit transaction")
|
||||
}
|
||||
|
||||
return specs, nil
|
||||
}
|
||||
|
||||
func (d *Datastore) GetPackSpec(name string) (spec *kolide.PackSpec, err error) {
|
||||
tx, err := d.db.Beginx()
|
||||
if err != nil {
|
||||
return nil, errors.Wrap(err, "begin GetPackSpecs transaction")
|
||||
}
|
||||
|
||||
defer func() {
|
||||
if err != nil {
|
||||
rbErr := tx.Rollback()
|
||||
// It seems possible that there might be a case in
|
||||
// which the error we are dealing with here was thrown
|
||||
// by the call to tx.Commit(), and the docs suggest
|
||||
// this call would then result in sql.ErrTxDone.
|
||||
if rbErr != nil && rbErr != sql.ErrTxDone {
|
||||
panic(fmt.Sprintf("got err '%s' rolling back after err '%s'", rbErr, err))
|
||||
}
|
||||
}
|
||||
}()
|
||||
|
||||
// Get basic spec
|
||||
var specs []*kolide.PackSpec
|
||||
query := "SELECT id, name, description, platform FROM packs WHERE name = ?"
|
||||
if err := tx.Select(&specs, query, name); err != nil {
|
||||
return nil, errors.Wrap(err, "get packs")
|
||||
}
|
||||
if len(specs) == 0 {
|
||||
return nil, notFound("Pack").WithName(name)
|
||||
}
|
||||
if len(specs) > 1 {
|
||||
return nil, errors.Errorf("expected 1 pack row, got %d", len(specs))
|
||||
}
|
||||
|
||||
spec = specs[0]
|
||||
|
||||
// Load targets
|
||||
query = `
|
||||
SELECT l.name
|
||||
FROM labels l JOIN pack_targets pt
|
||||
WHERE pack_id = ? AND pt.type = ? AND pt.target_id = l.id
|
||||
`
|
||||
if err := tx.Select(&spec.Targets.Labels, query, spec.ID, kolide.TargetLabel); err != nil {
|
||||
return nil, errors.Wrap(err, "get pack targets")
|
||||
}
|
||||
|
||||
// Load queries
|
||||
query = `
|
||||
SELECT
|
||||
query_name, name, description, ` + "`interval`" + `,
|
||||
snapshot, removed, shard, platform, version
|
||||
FROM scheduled_queries
|
||||
WHERE pack_id = ?
|
||||
`
|
||||
if err := tx.Select(&spec.Queries, query, spec.ID); err != nil {
|
||||
return nil, errors.Wrap(err, "get pack queries")
|
||||
}
|
||||
|
||||
err = tx.Commit()
|
||||
if err != nil {
|
||||
return nil, errors.Wrap(err, "commit transaction")
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return spec, nil
|
||||
|
||||
Loading…
Reference in New Issue
Block a user