Write create & delete sla events when initially syncing configs

pkg/icingadb/sla.go

@@ -0,0 +1,137 @@
+package icingadb
+
+import (
+	"context"
+	"github.com/icinga/icingadb/pkg/contracts"
+	v1 "github.com/icinga/icingadb/pkg/icingadb/v1"
+	"github.com/icinga/icingadb/pkg/types"
+	"github.com/pkg/errors"
+	"golang.org/x/sync/errgroup"
+	"time"
+)
+
+type SlaHistoryTrail struct {
+	Id                 types.Int `json:"id" db:"-"`
+	v1.EnvironmentMeta `json:",inline"`
+	HostId             types.Binary    `json:"host_id"`
+	ServiceId          types.Binary    `json:"service_id"`
+	EventType          string          `json:"event_type"`
+	EventTime          types.UnixMilli `json:"event_time"`
+}
+
+// Fingerprint implements the contracts.Fingerprinter interface.
+func (sht SlaHistoryTrail) Fingerprint() contracts.Fingerprinter {
+	return sht
+}
+
+// ID implements part of the contracts.IDer interface.
+func (sht SlaHistoryTrail) ID() contracts.ID {
+	return sht.Id
+}
+
+// SetID implements part of the contracts.IDer interface.
+func (sht *SlaHistoryTrail) SetID(id contracts.ID) {
+	sht.Id = id.(types.Int)
+}
+
+type SlaServiceHistoryTrailColumns struct {
+	v1.EntityWithoutChecksum `json:",inline"`
+	HostId                   types.Binary `json:"host_id"`
+}
+
+func CheckableToSlaTrailEntities(ctx context.Context, g *errgroup.Group, checkables <-chan contracts.Entity, eventType string) <-chan contracts.Entity {
+	entities := make(chan contracts.Entity, 1)
+
+	g.Go(func() error {
+		defer close(entities)
+
+		env, err := getEnvironmentId(ctx)
+		if err != nil {
+			return err
+		}
+
+		// Use the same event time for all chackables
+		now := time.Now()
+
+		for {
+			select {
+			case checkable, ok := <-checkables:
+				if !ok {
+					return nil
+				}
+
+				entity := &SlaHistoryTrail{
+					EnvironmentMeta: v1.EnvironmentMeta{EnvironmentId: env},
+					EventType:       eventType,
+					EventTime:       types.UnixMilli(now),
+				}
+
+				switch ptr := checkable.(type) {
+				case *v1.Host:
+					entity.HostId = ptr.Id
+				case *v1.Service:
+					entity.HostId = ptr.HostId
+					entity.ServiceId = ptr.Id
+				}
+
+				entities <- entity
+			case <-ctx.Done():
+				return ctx.Err()
+			}
+		}
+	})
+
+	return entities
+}
+
+// HostIdsToSlaHistoryTrail transforms the IDs from the passed channel into sla history trail struct
+// and streams them into a returned channel.
+func HostIdsToSlaHistoryTrail(ctx context.Context, g *errgroup.Group, ids <-chan any, eventType string) <-chan contracts.Entity {
+	entities := make(chan contracts.Entity, 1)
+	g.Go(func() error {
+		defer close(entities)
+
+		env, err := getEnvironmentId(ctx)
+		if err != nil {
+			return err
+		}
+
+		// Use the same event time for all hosts
+		now := time.Now()
+
+		for {
+			select {
+			case id, ok := <-ids:
+				if !ok {
+					return nil
+				}
+
+				entities <- &SlaHistoryTrail{
+					EnvironmentMeta: v1.EnvironmentMeta{EnvironmentId: env},
+					HostId:          id.(types.Binary),
+					EventType:       eventType,
+					EventTime:       types.UnixMilli(now),
+				}
+			case <-ctx.Done():
+				return ctx.Err()
+			}
+		}
+	})
+
+	return entities
+}
+
+// Get environment id from the given context
+func getEnvironmentId(ctx context.Context) (types.Binary, error) {
+	env, ok := v1.EnvironmentFromContext(ctx)
+	if !ok {
+		return nil, errors.New("can't get environment from context")
+	}
+
+	return env.Id, nil
+}
+
+// Assert interface compliance.
+var (
+	_ contracts.Entity = (*SlaHistoryTrail)(nil)
+)

pkg/icingadb/sync.go

@@ -15,6 +15,7 @@ import (
 	"go.uber.org/zap"
 	"golang.org/x/sync/errgroup"
 	"runtime"
+	"strings"
 	"time"
 )
 
@@ -129,9 +130,29 @@ func (s Sync) ApplyDelta(ctx context.Context, delta *Delta) error {
 			entities = delta.Create.Entities(ctx)
 		}
 
+		var createdEntities chan contracts.Entity
+		onSuccessHandlers := []OnSuccess[contracts.Entity]{OnSuccessIncrement[contracts.Entity](stat)}
+
+		switch delta.Subject.Entity().(type) {
+		case *v1.Host, *v1.Service:
+			createdEntities = make(chan contracts.Entity)
+			onSuccessHandlers = append(onSuccessHandlers, OnSuccessSendTo[contracts.Entity](createdEntities))
+		}
+
 		g.Go(func() error {
-			return s.db.CreateStreamed(ctx, entities, OnSuccessIncrement[contracts.Entity](stat))
+			if createdEntities != nil {
+				defer close(createdEntities)
+			}
+
+			return s.db.CreateStreamed(ctx, entities, onSuccessHandlers...)
 		})
+
+		if createdEntities != nil {
+			s.logger.Infof("Inserting %d items of type %s sla history trails of type create", len(delta.Create), utils.Key(utils.Name(delta.Subject.Entity()), ' '))
+			g.Go(func() error {
+				return s.db.CreateStreamed(ctx, CheckableToSlaTrailEntities(ctx, g, createdEntities, "create"))
+			})
+		}
 	}
 
 	// Update
@@ -161,9 +182,52 @@ func (s Sync) ApplyDelta(ctx context.Context, delta *Delta) error {
 	// Delete
 	if len(delta.Delete) > 0 {
 		s.logger.Infof("Deleting %d items of type %s", len(delta.Delete), utils.Key(utils.Name(delta.Subject.Entity()), ' '))
+		entity := delta.Subject.Entity()
+		if _, ok := entity.(*v1.Service); ok {
+			s.logger.Infof("Inserting %d items of type service sla history trails of type delete", len(delta.Delete))
+			g.Go(func() error {
+				columns := &SlaServiceHistoryTrailColumns{}
+				query := s.db.BuildSelectStmt(entity, columns)
+				if len(delta.Delete) == 1 {
+					query += ` WHERE id = ?`
+				} else {
+					var placeholders []string
+					for i := 0; i < len(delta.Delete); i++ {
+						placeholders = append(placeholders, "?")
+					}
+
+					query += fmt.Sprintf(` WHERE id IN (%s)`, strings.Join(placeholders, `, `))
+				}
+				entities, err := s.db.YieldAll(ctx, delta.Subject.Factory(), query, false, delta.Delete.IDs()...)
+				com.ErrgroupReceive(g, err)
+
+				return s.db.CreateStreamed(ctx, entities)
+			})
+		}
+
+		var hostIds chan any
+		onSuccessHandlers := []OnSuccess[any]{OnSuccessIncrement[any](stat)}
+
+		_, isHost := entity.(*v1.Host)
+		if isHost {
+			hostIds = make(chan any, 1)
+			onSuccessHandlers = append(onSuccessHandlers, OnSuccessSendTo[any](hostIds))
+		}
+
 		g.Go(func() error {
-			return s.db.Delete(ctx, delta.Subject.Entity(), delta.Delete.IDs(), OnSuccessIncrement[any](stat))
+			if isHost {
+				defer close(hostIds)
+			}
+
+			return s.db.Delete(ctx, delta.Subject.Entity(), delta.Delete.IDs(), onSuccessHandlers...)
 		})
+
+		if isHost {
+			s.logger.Infof("Inserting %d items of type host sla history trails of type delete", len(delta.Delete))
+			g.Go(func() error {
+				return s.db.CreateStreamed(ctx, HostIdsToSlaHistoryTrail(ctx, g, hostIds, "delete"))
+			})
+		}
 	}
 
 	return g.Wait()

schema/mysql/schema.sql

@@ -1321,6 +1321,18 @@ CREATE TABLE sla_history_downtime (
   INDEX idx_sla_history_downtime_env_downtime_end (environment_id, downtime_end) COMMENT 'Filter for sla history retention'
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
 
+CREATE TABLE sla_history_trail (
+  id bigint NOT NULL AUTO_INCREMENT,
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  host_id binary(20) NOT NULL COMMENT 'host.id (may reference already deleted hosts)',
+  service_id binary(20) DEFAULT NULL COMMENT 'service.id (may reference already deleted services)',
+
+  event_type enum('delete', 'create') NOT NULL,
+  event_time bigint unsigned NOT NULL COMMENT 'unix timestamp the event occurred',
+
+  PRIMARY KEY (id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
 CREATE TABLE icingadb_schema (
   id int unsigned NOT NULL AUTO_INCREMENT,
   version smallint unsigned NOT NULL,

schema/pgsql/schema.sql

@@ -17,6 +17,7 @@ CREATE TYPE boolenum AS ENUM ( 'n', 'y' );
 CREATE TYPE acked AS ENUM ( 'n', 'y', 'sticky' );
 CREATE TYPE state_type AS ENUM ( 'hard', 'soft' );
 CREATE TYPE checkable_type AS ENUM ( 'host', 'service' );
+CREATE TYPE sla_trail_event_type AS ENUM ( 'create', 'delete' );
 CREATE TYPE comment_type AS ENUM ( 'comment', 'ack' );
 CREATE TYPE notification_type AS ENUM ( 'downtime_start', 'downtime_end', 'downtime_removed', 'custom', 'acknowledgement', 'problem', 'recovery', 'flapping_start', 'flapping_end' );
 CREATE TYPE history_type AS ENUM ( 'notification', 'state_change', 'downtime_start', 'downtime_end', 'comment_add', 'comment_remove', 'flapping_start', 'flapping_end', 'ack_set', 'ack_clear' );
@@ -2147,6 +2148,23 @@ COMMENT ON COLUMN sla_history_downtime.downtime_id IS 'downtime.id (may referenc
 COMMENT ON COLUMN sla_history_downtime.downtime_start IS 'start time of the downtime';
 COMMENT ON COLUMN sla_history_downtime.downtime_end IS 'end time of the downtime';
 
+CREATE TABLE sla_history_trail (
+  id bigserial NOT NULL,
+  environment_id bytea20 NOT NULL,
+  host_id bytea20 NOT NULL,
+  service_id bytea20 DEFAULT NULL,
+
+  event_type sla_trail_event_type NOT NULL,
+  event_time biguint NOT NULL,
+
+  CONSTRAINT pk_sla_history_trail PRIMARY KEY (id)
+);
+
+COMMENT ON COLUMN sla_history_trail.environment_id IS 'environment.id';
+COMMENT ON COLUMN sla_history_trail.host_id IS 'host.id (may reference already deleted hosts)';
+COMMENT ON COLUMN sla_history_trail.service_id IS 'service.id (may reference already deleted services)';
+COMMENT ON COLUMN sla_history_trail.event_time IS 'unix timestamp the event occurred';
+
 CREATE SEQUENCE icingadb_schema_id_seq;
 
 CREATE TABLE icingadb_schema (