Close #124: Add support for Postgres as a storage solution
This commit is contained in:
TwinProduction
809
storage/store/sql/sql.go
Normal file
809
storage/store/sql/sql.go
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@ -0,0 +1,809 @@
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package sql
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import (
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"database/sql"
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"errors"
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"fmt"
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"log"
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"strings"
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"time"
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"github.com/TwinProduction/gatus/core"
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"github.com/TwinProduction/gatus/storage/store/common"
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"github.com/TwinProduction/gatus/storage/store/common/paging"
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"github.com/TwinProduction/gatus/util"
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_ "github.com/lib/pq"
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_ "modernc.org/sqlite"
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)
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//////////////////////////////////////////////////////////////////////////////////////////////////
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// Note that only exported functions in this file may create, commit, or rollback a transaction //
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//////////////////////////////////////////////////////////////////////////////////////////////////
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const (
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// arraySeparator is the separator used to separate multiple strings in a single column.
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// It's a dirty hack, but it's only used for persisting errors, and since this data will likely only ever be used
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// for aesthetic purposes, I deemed it wasn't worth the performance impact of yet another one-to-many table.
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arraySeparator = "|~|"
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uptimeCleanUpThreshold = 10 * 24 * time.Hour // Maximum uptime age before triggering a clean up
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eventsCleanUpThreshold = common.MaximumNumberOfEvents + 10 // Maximum number of events before triggering a clean up
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resultsCleanUpThreshold = common.MaximumNumberOfResults + 10 // Maximum number of results before triggering a clean up
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uptimeRetention = 7 * 24 * time.Hour
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)
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var (
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// ErrFilePathNotSpecified is the error returned when path parameter passed in NewStore is blank
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ErrFilePathNotSpecified = errors.New("file path cannot be empty")
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// ErrDatabaseDriverNotSpecified is the error returned when the driver parameter passed in NewStore is blank
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ErrDatabaseDriverNotSpecified = errors.New("database driver cannot be empty")
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errNoRowsReturned = errors.New("expected a row to be returned, but none was")
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)
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// Store that leverages a database
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type Store struct {
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driver, file string
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db *sql.DB
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}
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// NewStore initializes the database and creates the schema if it doesn't already exist in the file specified
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func NewStore(driver, path string) (*Store, error) {
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if len(driver) == 0 {
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return nil, ErrDatabaseDriverNotSpecified
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}
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if len(path) == 0 {
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return nil, ErrFilePathNotSpecified
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}
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store := &Store{driver: driver, file: path}
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var err error
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if store.db, err = sql.Open(driver, path); err != nil {
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return nil, err
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}
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if driver == "sqlite" {
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_, _ = store.db.Exec("PRAGMA foreign_keys=ON")
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_, _ = store.db.Exec("PRAGMA journal_mode=WAL")
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_, _ = store.db.Exec("PRAGMA synchronous=NORMAL")
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// Prevents driver from running into "database is locked" errors
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// This is because we're using WAL to improve performance
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store.db.SetMaxOpenConns(1)
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}
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if err = store.createSchema(); err != nil {
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_ = store.db.Close()
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return nil, err
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}
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return store, nil
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}
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// createSchema creates the schema required to perform all database operations.
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func (s *Store) createSchema() error {
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if s.driver == "sqlite" {
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return s.createSQLiteSchema()
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}
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return s.createPostgresSchema()
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}
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// GetAllServiceStatuses returns all monitored core.ServiceStatus
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// with a subset of core.Result defined by the page and pageSize parameters
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func (s *Store) GetAllServiceStatuses(params *paging.ServiceStatusParams) ([]*core.ServiceStatus, error) {
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tx, err := s.db.Begin()
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if err != nil {
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return nil, err
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}
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keys, err := s.getAllServiceKeys(tx)
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if err != nil {
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_ = tx.Rollback()
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return nil, err
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}
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serviceStatuses := make([]*core.ServiceStatus, 0, len(keys))
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for _, key := range keys {
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serviceStatus, err := s.getServiceStatusByKey(tx, key, params)
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if err != nil {
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continue
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}
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serviceStatuses = append(serviceStatuses, serviceStatus)
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}
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if err = tx.Commit(); err != nil {
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_ = tx.Rollback()
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}
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return serviceStatuses, err
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}
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// GetServiceStatus returns the service status for a given service name in the given group
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func (s *Store) GetServiceStatus(groupName, serviceName string, params *paging.ServiceStatusParams) (*core.ServiceStatus, error) {
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return s.GetServiceStatusByKey(util.ConvertGroupAndServiceToKey(groupName, serviceName), params)
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}
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// GetServiceStatusByKey returns the service status for a given key
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func (s *Store) GetServiceStatusByKey(key string, params *paging.ServiceStatusParams) (*core.ServiceStatus, error) {
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tx, err := s.db.Begin()
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if err != nil {
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return nil, err
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}
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serviceStatus, err := s.getServiceStatusByKey(tx, key, params)
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if err != nil {
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_ = tx.Rollback()
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return nil, err
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}
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if err = tx.Commit(); err != nil {
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_ = tx.Rollback()
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}
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return serviceStatus, err
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}
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// GetUptimeByKey returns the uptime percentage during a time range
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func (s *Store) GetUptimeByKey(key string, from, to time.Time) (float64, error) {
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if from.After(to) {
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return 0, common.ErrInvalidTimeRange
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}
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tx, err := s.db.Begin()
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if err != nil {
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return 0, err
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}
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serviceID, _, _, err := s.getServiceIDGroupAndNameByKey(tx, key)
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if err != nil {
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_ = tx.Rollback()
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return 0, err
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}
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uptime, _, err := s.getServiceUptime(tx, serviceID, from, to)
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if err != nil {
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_ = tx.Rollback()
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return 0, err
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}
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if err = tx.Commit(); err != nil {
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_ = tx.Rollback()
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}
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return uptime, nil
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}
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// GetAverageResponseTimeByKey returns the average response time in milliseconds (value) during a time range
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func (s *Store) GetAverageResponseTimeByKey(key string, from, to time.Time) (int, error) {
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if from.After(to) {
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return 0, common.ErrInvalidTimeRange
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}
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tx, err := s.db.Begin()
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if err != nil {
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return 0, err
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}
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serviceID, _, _, err := s.getServiceIDGroupAndNameByKey(tx, key)
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if err != nil {
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_ = tx.Rollback()
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return 0, err
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}
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averageResponseTime, err := s.getServiceAverageResponseTime(tx, serviceID, from, to)
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if err != nil {
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_ = tx.Rollback()
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return 0, err
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}
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if err = tx.Commit(); err != nil {
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_ = tx.Rollback()
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}
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return averageResponseTime, nil
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}
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// GetHourlyAverageResponseTimeByKey returns a map of hourly (key) average response time in milliseconds (value) during a time range
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func (s *Store) GetHourlyAverageResponseTimeByKey(key string, from, to time.Time) (map[int64]int, error) {
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if from.After(to) {
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return nil, common.ErrInvalidTimeRange
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}
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tx, err := s.db.Begin()
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if err != nil {
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return nil, err
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}
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serviceID, _, _, err := s.getServiceIDGroupAndNameByKey(tx, key)
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if err != nil {
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_ = tx.Rollback()
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return nil, err
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}
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hourlyAverageResponseTimes, err := s.getServiceHourlyAverageResponseTimes(tx, serviceID, from, to)
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if err != nil {
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_ = tx.Rollback()
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return nil, err
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}
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if err = tx.Commit(); err != nil {
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_ = tx.Rollback()
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}
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return hourlyAverageResponseTimes, nil
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}
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// Insert adds the observed result for the specified service into the store
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func (s *Store) Insert(service *core.Service, result *core.Result) error {
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tx, err := s.db.Begin()
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if err != nil {
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return err
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}
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//start := time.Now()
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serviceID, err := s.getServiceID(tx, service)
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if err != nil {
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if err == common.ErrServiceNotFound {
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// Service doesn't exist in the database, insert it
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if serviceID, err = s.insertService(tx, service); err != nil {
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_ = tx.Rollback()
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log.Printf("[sql][Insert] Failed to create service with group=%s; service=%s: %s", service.Group, service.Name, err.Error())
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return err
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}
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} else {
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_ = tx.Rollback()
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log.Printf("[sql][Insert] Failed to retrieve id of service with group=%s; service=%s: %s", service.Group, service.Name, err.Error())
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return err
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}
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}
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// First, we need to check if we need to insert a new event.
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//
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// A new event must be added if either of the following cases happen:
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// 1. There is only 1 event. The total number of events for a service can only be 1 if the only existing event is
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// of type EventStart, in which case we will have to create a new event of type EventHealthy or EventUnhealthy
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// based on result.Success.
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// 2. The lastResult.Success != result.Success. This implies that the service went from healthy to unhealthy or
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// vice-versa, in which case we will have to create a new event of type EventHealthy or EventUnhealthy
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// based on result.Success.
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numberOfEvents, err := s.getNumberOfEventsByServiceID(tx, serviceID)
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if err != nil {
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log.Printf("[sql][Insert] Failed to retrieve total number of events for group=%s; service=%s: %s", service.Group, service.Name, err.Error())
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}
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if numberOfEvents == 0 {
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// There's no events yet, which means we need to add the EventStart and the first healthy/unhealthy event
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err = s.insertEvent(tx, serviceID, &core.Event{
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Type: core.EventStart,
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Timestamp: result.Timestamp.Add(-50 * time.Millisecond),
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})
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if err != nil {
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// Silently fail
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log.Printf("[sql][Insert] Failed to insert event=%s for group=%s; service=%s: %s", core.EventStart, service.Group, service.Name, err.Error())
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}
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event := core.NewEventFromResult(result)
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if err = s.insertEvent(tx, serviceID, event); err != nil {
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// Silently fail
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log.Printf("[sql][Insert] Failed to insert event=%s for group=%s; service=%s: %s", event.Type, service.Group, service.Name, err.Error())
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}
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} else {
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// Get the success value of the previous result
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var lastResultSuccess bool
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if lastResultSuccess, err = s.getLastServiceResultSuccessValue(tx, serviceID); err != nil {
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log.Printf("[sql][Insert] Failed to retrieve outcome of previous result for group=%s; service=%s: %s", service.Group, service.Name, err.Error())
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} else {
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// If we managed to retrieve the outcome of the previous result, we'll compare it with the new result.
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// If the final outcome (success or failure) of the previous and the new result aren't the same, it means
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// that the service either went from Healthy to Unhealthy or Unhealthy -> Healthy, therefore, we'll add
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// an event to mark the change in state
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if lastResultSuccess != result.Success {
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event := core.NewEventFromResult(result)
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if err = s.insertEvent(tx, serviceID, event); err != nil {
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// Silently fail
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log.Printf("[sql][Insert] Failed to insert event=%s for group=%s; service=%s: %s", event.Type, service.Group, service.Name, err.Error())
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}
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}
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}
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// Clean up old events if there's more than twice the maximum number of events
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// This lets us both keep the table clean without impacting performance too much
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// (since we're only deleting MaximumNumberOfEvents at a time instead of 1)
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if numberOfEvents > eventsCleanUpThreshold {
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if err = s.deleteOldServiceEvents(tx, serviceID); err != nil {
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log.Printf("[sql][Insert] Failed to delete old events for group=%s; service=%s: %s", service.Group, service.Name, err.Error())
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}
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}
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}
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// Second, we need to insert the result.
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if err = s.insertResult(tx, serviceID, result); err != nil {
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log.Printf("[sql][Insert] Failed to insert result for group=%s; service=%s: %s", service.Group, service.Name, err.Error())
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_ = tx.Rollback() // If we can't insert the result, we'll rollback now since there's no point continuing
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return err
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}
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// Clean up old results
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numberOfResults, err := s.getNumberOfResultsByServiceID(tx, serviceID)
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if err != nil {
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log.Printf("[sql][Insert] Failed to retrieve total number of results for group=%s; service=%s: %s", service.Group, service.Name, err.Error())
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} else {
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if numberOfResults > resultsCleanUpThreshold {
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if err = s.deleteOldServiceResults(tx, serviceID); err != nil {
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log.Printf("[sql][Insert] Failed to delete old results for group=%s; service=%s: %s", service.Group, service.Name, err.Error())
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}
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}
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}
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// Finally, we need to insert the uptime data.
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// Because the uptime data significantly outlives the results, we can't rely on the results for determining the uptime
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if err = s.updateServiceUptime(tx, serviceID, result); err != nil {
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log.Printf("[sql][Insert] Failed to update uptime for group=%s; service=%s: %s", service.Group, service.Name, err.Error())
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}
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// Clean up old uptime entries
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ageOfOldestUptimeEntry, err := s.getAgeOfOldestServiceUptimeEntry(tx, serviceID)
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if err != nil {
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log.Printf("[sql][Insert] Failed to retrieve oldest service uptime entry for group=%s; service=%s: %s", service.Group, service.Name, err.Error())
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} else {
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if ageOfOldestUptimeEntry > uptimeCleanUpThreshold {
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if err = s.deleteOldUptimeEntries(tx, serviceID, time.Now().Add(-(uptimeRetention + time.Hour))); err != nil {
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log.Printf("[sql][Insert] Failed to delete old uptime entries for group=%s; service=%s: %s", service.Group, service.Name, err.Error())
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}
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}
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}
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//log.Printf("[sql][Insert] Successfully inserted result in duration=%dms", time.Since(start).Milliseconds())
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if err = tx.Commit(); err != nil {
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_ = tx.Rollback()
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}
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return err
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}
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// DeleteAllServiceStatusesNotInKeys removes all rows owned by a service whose key is not within the keys provided
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func (s *Store) DeleteAllServiceStatusesNotInKeys(keys []string) int {
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var err error
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var result sql.Result
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if len(keys) == 0 {
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// Delete everything
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result, err = s.db.Exec("DELETE FROM service")
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} else {
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args := make([]interface{}, 0, len(keys))
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query := "DELETE FROM service WHERE service_key NOT IN ("
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for i := range keys {
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query += fmt.Sprintf("$%d,", i+1)
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args = append(args, keys[i])
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}
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query = query[:len(query)-1] + ")"
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result, err = s.db.Exec(query, args...)
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}
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if err != nil {
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log.Printf("[sql][DeleteAllServiceStatusesNotInKeys] Failed to delete rows that do not belong to any of keys=%v: %s", keys, err.Error())
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return 0
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}
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rowsAffects, _ := result.RowsAffected()
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return int(rowsAffects)
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}
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// Clear deletes everything from the store
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func (s *Store) Clear() {
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_, _ = s.db.Exec("DELETE FROM service")
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}
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// Save does nothing, because this store is immediately persistent.
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func (s *Store) Save() error {
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return nil
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}
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// Close the database handle
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func (s *Store) Close() {
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_ = s.db.Close()
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}
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// insertService inserts a service in the store and returns the generated id of said service
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func (s *Store) insertService(tx *sql.Tx, service *core.Service) (int64, error) {
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//log.Printf("[sql][insertService] Inserting service with group=%s and name=%s", service.Group, service.Name)
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var id int64
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err := tx.QueryRow(
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"INSERT INTO service (service_key, service_name, service_group) VALUES ($1, $2, $3) RETURNING service_id",
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service.Key(),
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service.Name,
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service.Group,
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).Scan(&id)
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if err != nil {
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return 0, err
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}
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return id, nil
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}
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// insertEvent inserts a service event in the store
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func (s *Store) insertEvent(tx *sql.Tx, serviceID int64, event *core.Event) error {
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_, err := tx.Exec(
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"INSERT INTO service_event (service_id, event_type, event_timestamp) VALUES ($1, $2, $3)",
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serviceID,
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event.Type,
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event.Timestamp.UTC(),
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)
|
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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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// insertResult inserts a result in the store
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func (s *Store) insertResult(tx *sql.Tx, serviceID int64, result *core.Result) error {
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var serviceResultID int64
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err := tx.QueryRow(
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`
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INSERT INTO service_result (service_id, success, errors, connected, status, dns_rcode, certificate_expiration, hostname, ip, duration, timestamp)
|
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VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11)
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RETURNING service_result_id
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`,
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serviceID,
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result.Success,
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strings.Join(result.Errors, arraySeparator),
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result.Connected,
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result.HTTPStatus,
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result.DNSRCode,
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result.CertificateExpiration,
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result.Hostname,
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result.IP,
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result.Duration,
|
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result.Timestamp.UTC(),
|
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).Scan(&serviceResultID)
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if err != nil {
|
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return err
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}
|
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return s.insertConditionResults(tx, serviceResultID, result.ConditionResults)
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}
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|
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func (s *Store) insertConditionResults(tx *sql.Tx, serviceResultID int64, conditionResults []*core.ConditionResult) error {
|
||||
var err error
|
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for _, cr := range conditionResults {
|
||||
_, err = tx.Exec("INSERT INTO service_result_condition (service_result_id, condition, success) VALUES ($1, $2, $3)",
|
||||
serviceResultID,
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cr.Condition,
|
||||
cr.Success,
|
||||
)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *Store) updateServiceUptime(tx *sql.Tx, serviceID int64, result *core.Result) error {
|
||||
unixTimestampFlooredAtHour := result.Timestamp.Truncate(time.Hour).Unix()
|
||||
var successfulExecutions int
|
||||
if result.Success {
|
||||
successfulExecutions = 1
|
||||
}
|
||||
_, err := tx.Exec(
|
||||
`
|
||||
INSERT INTO service_uptime (service_id, hour_unix_timestamp, total_executions, successful_executions, total_response_time)
|
||||
VALUES ($1, $2, $3, $4, $5)
|
||||
ON CONFLICT(service_id, hour_unix_timestamp) DO UPDATE SET
|
||||
total_executions = excluded.total_executions + service_uptime.total_executions,
|
||||
successful_executions = excluded.successful_executions + service_uptime.successful_executions,
|
||||
total_response_time = excluded.total_response_time + service_uptime.total_response_time
|
||||
`,
|
||||
serviceID,
|
||||
unixTimestampFlooredAtHour,
|
||||
1,
|
||||
successfulExecutions,
|
||||
result.Duration.Milliseconds(),
|
||||
)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *Store) getAllServiceKeys(tx *sql.Tx) (keys []string, err error) {
|
||||
rows, err := tx.Query("SELECT service_key FROM service ORDER BY service_key")
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
for rows.Next() {
|
||||
var key string
|
||||
_ = rows.Scan(&key)
|
||||
keys = append(keys, key)
|
||||
}
|
||||
_ = rows.Close()
|
||||
return
|
||||
}
|
||||
|
||||
func (s *Store) getServiceStatusByKey(tx *sql.Tx, key string, parameters *paging.ServiceStatusParams) (*core.ServiceStatus, error) {
|
||||
serviceID, serviceGroup, serviceName, err := s.getServiceIDGroupAndNameByKey(tx, key)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
serviceStatus := core.NewServiceStatus(key, serviceGroup, serviceName)
|
||||
if parameters.EventsPageSize > 0 {
|
||||
if serviceStatus.Events, err = s.getEventsByServiceID(tx, serviceID, parameters.EventsPage, parameters.EventsPageSize); err != nil {
|
||||
log.Printf("[sql][getServiceStatusByKey] Failed to retrieve events for key=%s: %s", key, err.Error())
|
||||
}
|
||||
}
|
||||
if parameters.ResultsPageSize > 0 {
|
||||
if serviceStatus.Results, err = s.getResultsByServiceID(tx, serviceID, parameters.ResultsPage, parameters.ResultsPageSize); err != nil {
|
||||
log.Printf("[sql][getServiceStatusByKey] Failed to retrieve results for key=%s: %s", key, err.Error())
|
||||
}
|
||||
}
|
||||
//if parameters.IncludeUptime {
|
||||
// now := time.Now()
|
||||
// serviceStatus.Uptime.LastHour, _, err = s.getServiceUptime(tx, serviceID, now.Add(-time.Hour), now)
|
||||
// serviceStatus.Uptime.LastTwentyFourHours, _, err = s.getServiceUptime(tx, serviceID, now.Add(-24*time.Hour), now)
|
||||
// serviceStatus.Uptime.LastSevenDays, _, err = s.getServiceUptime(tx, serviceID, now.Add(-7*24*time.Hour), now)
|
||||
//}
|
||||
return serviceStatus, nil
|
||||
}
|
||||
|
||||
func (s *Store) getServiceIDGroupAndNameByKey(tx *sql.Tx, key string) (id int64, group, name string, err error) {
|
||||
err = tx.QueryRow(
|
||||
`
|
||||
SELECT service_id, service_group, service_name
|
||||
FROM service
|
||||
WHERE service_key = $1
|
||||
LIMIT 1
|
||||
`,
|
||||
key,
|
||||
).Scan(&id, &group, &name)
|
||||
if err != nil {
|
||||
if err == sql.ErrNoRows {
|
||||
return 0, "", "", common.ErrServiceNotFound
|
||||
}
|
||||
return 0, "", "", err
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (s *Store) getEventsByServiceID(tx *sql.Tx, serviceID int64, page, pageSize int) (events []*core.Event, err error) {
|
||||
rows, err := tx.Query(
|
||||
`
|
||||
SELECT event_type, event_timestamp
|
||||
FROM service_event
|
||||
WHERE service_id = $1
|
||||
ORDER BY service_event_id ASC
|
||||
LIMIT $2 OFFSET $3
|
||||
`,
|
||||
serviceID,
|
||||
pageSize,
|
||||
(page-1)*pageSize,
|
||||
)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
for rows.Next() {
|
||||
event := &core.Event{}
|
||||
_ = rows.Scan(&event.Type, &event.Timestamp)
|
||||
events = append(events, event)
|
||||
}
|
||||
_ = rows.Close()
|
||||
return
|
||||
}
|
||||
|
||||
func (s *Store) getResultsByServiceID(tx *sql.Tx, serviceID int64, page, pageSize int) (results []*core.Result, err error) {
|
||||
rows, err := tx.Query(
|
||||
`
|
||||
SELECT service_result_id, success, errors, connected, status, dns_rcode, certificate_expiration, hostname, ip, duration, timestamp
|
||||
FROM service_result
|
||||
WHERE service_id = $1
|
||||
ORDER BY service_result_id DESC -- Normally, we'd sort by timestamp, but sorting by service_result_id is faster
|
||||
LIMIT $2 OFFSET $3
|
||||
`,
|
||||
//`
|
||||
// SELECT * FROM (
|
||||
// SELECT service_result_id, success, errors, connected, status, dns_rcode, certificate_expiration, hostname, ip, duration, timestamp
|
||||
// FROM service_result
|
||||
// WHERE service_id = $1
|
||||
// ORDER BY service_result_id DESC -- Normally, we'd sort by timestamp, but sorting by service_result_id is faster
|
||||
// LIMIT $2 OFFSET $3
|
||||
// )
|
||||
// ORDER BY service_result_id ASC -- Normally, we'd sort by timestamp, but sorting by service_result_id is faster
|
||||
//`,
|
||||
serviceID,
|
||||
pageSize,
|
||||
(page-1)*pageSize,
|
||||
)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
idResultMap := make(map[int64]*core.Result)
|
||||
for rows.Next() {
|
||||
result := &core.Result{}
|
||||
var id int64
|
||||
var joinedErrors string
|
||||
_ = rows.Scan(&id, &result.Success, &joinedErrors, &result.Connected, &result.HTTPStatus, &result.DNSRCode, &result.CertificateExpiration, &result.Hostname, &result.IP, &result.Duration, &result.Timestamp)
|
||||
if len(joinedErrors) != 0 {
|
||||
result.Errors = strings.Split(joinedErrors, arraySeparator)
|
||||
}
|
||||
//results = append(results, result)
|
||||
// This is faster than using a subselect
|
||||
results = append([]*core.Result{result}, results...)
|
||||
idResultMap[id] = result
|
||||
}
|
||||
_ = rows.Close()
|
||||
// Get the conditionResults
|
||||
for serviceResultID, result := range idResultMap {
|
||||
rows, err = tx.Query(
|
||||
`
|
||||
SELECT condition, success
|
||||
FROM service_result_condition
|
||||
WHERE service_result_id = $1
|
||||
`,
|
||||
serviceResultID,
|
||||
)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
for rows.Next() {
|
||||
conditionResult := &core.ConditionResult{}
|
||||
if err = rows.Scan(&conditionResult.Condition, &conditionResult.Success); err != nil {
|
||||
return
|
||||
}
|
||||
result.ConditionResults = append(result.ConditionResults, conditionResult)
|
||||
}
|
||||
_ = rows.Close()
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (s *Store) getServiceUptime(tx *sql.Tx, serviceID int64, from, to time.Time) (uptime float64, avgResponseTime time.Duration, err error) {
|
||||
rows, err := tx.Query(
|
||||
`
|
||||
SELECT SUM(total_executions), SUM(successful_executions), SUM(total_response_time)
|
||||
FROM service_uptime
|
||||
WHERE service_id = $1
|
||||
AND hour_unix_timestamp >= $2
|
||||
AND hour_unix_timestamp <= $3
|
||||
`,
|
||||
serviceID,
|
||||
from.Unix(),
|
||||
to.Unix(),
|
||||
)
|
||||
if err != nil {
|
||||
return 0, 0, err
|
||||
}
|
||||
var totalExecutions, totalSuccessfulExecutions, totalResponseTime int
|
||||
for rows.Next() {
|
||||
_ = rows.Scan(&totalExecutions, &totalSuccessfulExecutions, &totalResponseTime)
|
||||
break
|
||||
}
|
||||
_ = rows.Close()
|
||||
if totalExecutions > 0 {
|
||||
uptime = float64(totalSuccessfulExecutions) / float64(totalExecutions)
|
||||
avgResponseTime = time.Duration(float64(totalResponseTime)/float64(totalExecutions)) * time.Millisecond
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (s *Store) getServiceAverageResponseTime(tx *sql.Tx, serviceID int64, from, to time.Time) (int, error) {
|
||||
rows, err := tx.Query(
|
||||
`
|
||||
SELECT SUM(total_executions), SUM(total_response_time)
|
||||
FROM service_uptime
|
||||
WHERE service_id = $1
|
||||
AND total_executions > 0
|
||||
AND hour_unix_timestamp >= $2
|
||||
AND hour_unix_timestamp <= $3
|
||||
`,
|
||||
serviceID,
|
||||
from.Unix(),
|
||||
to.Unix(),
|
||||
)
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
var totalExecutions, totalResponseTime int
|
||||
for rows.Next() {
|
||||
_ = rows.Scan(&totalExecutions, &totalResponseTime)
|
||||
}
|
||||
_ = rows.Close()
|
||||
if totalExecutions == 0 {
|
||||
return 0, nil
|
||||
}
|
||||
return int(float64(totalResponseTime) / float64(totalExecutions)), nil
|
||||
}
|
||||
|
||||
func (s *Store) getServiceHourlyAverageResponseTimes(tx *sql.Tx, serviceID int64, from, to time.Time) (map[int64]int, error) {
|
||||
rows, err := tx.Query(
|
||||
`
|
||||
SELECT hour_unix_timestamp, total_executions, total_response_time
|
||||
FROM service_uptime
|
||||
WHERE service_id = $1
|
||||
AND total_executions > 0
|
||||
AND hour_unix_timestamp >= $2
|
||||
AND hour_unix_timestamp <= $3
|
||||
`,
|
||||
serviceID,
|
||||
from.Unix(),
|
||||
to.Unix(),
|
||||
)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
var totalExecutions, totalResponseTime int
|
||||
var unixTimestampFlooredAtHour int64
|
||||
hourlyAverageResponseTimes := make(map[int64]int)
|
||||
for rows.Next() {
|
||||
_ = rows.Scan(&unixTimestampFlooredAtHour, &totalExecutions, &totalResponseTime)
|
||||
hourlyAverageResponseTimes[unixTimestampFlooredAtHour] = int(float64(totalResponseTime) / float64(totalExecutions))
|
||||
}
|
||||
_ = rows.Close()
|
||||
return hourlyAverageResponseTimes, nil
|
||||
}
|
||||
|
||||
func (s *Store) getServiceID(tx *sql.Tx, service *core.Service) (int64, error) {
|
||||
var id int64
|
||||
err := tx.QueryRow("SELECT service_id FROM service WHERE service_key = $1", service.Key()).Scan(&id)
|
||||
if err != nil {
|
||||
if err == sql.ErrNoRows {
|
||||
return 0, common.ErrServiceNotFound
|
||||
}
|
||||
return 0, err
|
||||
}
|
||||
return id, nil
|
||||
}
|
||||
|
||||
func (s *Store) getNumberOfEventsByServiceID(tx *sql.Tx, serviceID int64) (int64, error) {
|
||||
var numberOfEvents int64
|
||||
err := tx.QueryRow("SELECT COUNT(1) FROM service_event WHERE service_id = $1", serviceID).Scan(&numberOfEvents)
|
||||
return numberOfEvents, err
|
||||
}
|
||||
|
||||
func (s *Store) getNumberOfResultsByServiceID(tx *sql.Tx, serviceID int64) (int64, error) {
|
||||
var numberOfResults int64
|
||||
err := tx.QueryRow("SELECT COUNT(1) FROM service_result WHERE service_id = $1", serviceID).Scan(&numberOfResults)
|
||||
return numberOfResults, err
|
||||
}
|
||||
|
||||
func (s *Store) getAgeOfOldestServiceUptimeEntry(tx *sql.Tx, serviceID int64) (time.Duration, error) {
|
||||
rows, err := tx.Query(
|
||||
`
|
||||
SELECT hour_unix_timestamp
|
||||
FROM service_uptime
|
||||
WHERE service_id = $1
|
||||
ORDER BY hour_unix_timestamp
|
||||
LIMIT 1
|
||||
`,
|
||||
serviceID,
|
||||
)
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
var oldestServiceUptimeUnixTimestamp int64
|
||||
var found bool
|
||||
for rows.Next() {
|
||||
_ = rows.Scan(&oldestServiceUptimeUnixTimestamp)
|
||||
found = true
|
||||
break
|
||||
}
|
||||
_ = rows.Close()
|
||||
if !found {
|
||||
return 0, errNoRowsReturned
|
||||
}
|
||||
return time.Since(time.Unix(oldestServiceUptimeUnixTimestamp, 0)), nil
|
||||
}
|
||||
|
||||
func (s *Store) getLastServiceResultSuccessValue(tx *sql.Tx, serviceID int64) (bool, error) {
|
||||
var success bool
|
||||
err := tx.QueryRow("SELECT success FROM service_result WHERE service_id = $1 ORDER BY service_result_id DESC LIMIT 1", serviceID).Scan(&success)
|
||||
if err != nil {
|
||||
if err == sql.ErrNoRows {
|
||||
return false, errNoRowsReturned
|
||||
}
|
||||
return false, err
|
||||
}
|
||||
return success, nil
|
||||
}
|
||||
|
||||
// deleteOldServiceEvents deletes old service events that are no longer needed
|
||||
func (s *Store) deleteOldServiceEvents(tx *sql.Tx, serviceID int64) error {
|
||||
_, err := tx.Exec(
|
||||
`
|
||||
DELETE FROM service_event
|
||||
WHERE service_id = $1
|
||||
AND service_event_id NOT IN (
|
||||
SELECT service_event_id
|
||||
FROM service_event
|
||||
WHERE service_id = $1
|
||||
ORDER BY service_event_id DESC
|
||||
LIMIT $2
|
||||
)
|
||||
`,
|
||||
serviceID,
|
||||
common.MaximumNumberOfEvents,
|
||||
)
|
||||
return err
|
||||
}
|
||||
|
||||
// deleteOldServiceResults deletes old service results that are no longer needed
|
||||
func (s *Store) deleteOldServiceResults(tx *sql.Tx, serviceID int64) error {
|
||||
_, err := tx.Exec(
|
||||
`
|
||||
DELETE FROM service_result
|
||||
WHERE service_id = $1
|
||||
AND service_result_id NOT IN (
|
||||
SELECT service_result_id
|
||||
FROM service_result
|
||||
WHERE service_id = $1
|
||||
ORDER BY service_result_id DESC
|
||||
LIMIT $2
|
||||
)
|
||||
`,
|
||||
serviceID,
|
||||
common.MaximumNumberOfResults,
|
||||
)
|
||||
return err
|
||||
}
|
||||
|
||||
func (s *Store) deleteOldUptimeEntries(tx *sql.Tx, serviceID int64, maxAge time.Time) error {
|
||||
_, err := tx.Exec("DELETE FROM service_uptime WHERE service_id = $1 AND hour_unix_timestamp < $2", serviceID, maxAge.Unix())
|
||||
return err
|
||||
}
|
||||
Reference in New Issue
Block a user