// Package periodic provides APOC periodic execution functions.
//
// This package implements all apoc.periodic.* functions for scheduled
// and batch execution of operations.
package periodic
import (
"context"
"fmt"
"time"
)
// Iterate executes a statement for each item in a collection.
//
// Example:
//
// apoc.periodic.iterate('MATCH (n) RETURN n', 'SET n.processed = true', {batchSize: 1000})
func Iterate(cypherIterate, cypherAction string, config map[string]interface{}) map[string]interface{} {
batchSize := 1000
if bs, ok := config["batchSize"].(int); ok {
batchSize = bs
}
parallel := false
if p, ok := config["parallel"].(bool); ok {
parallel = p
}
// Placeholder implementation
return map[string]interface{}{
"batches": 0,
"total": 0,
"timeTaken": 0,
"committedOperations": 0,
"failedOperations": 0,
"failedBatches": 0,
"retries": 0,
"errorMessages": map[string]interface{}{},
"batch": map[string]interface{}{
"total": 0,
"committed": 0,
"failed": 0,
},
"operations": map[string]interface{}{
"total": 0,
"committed": 0,
"failed": 0,
},
"batchSize": batchSize,
"parallel": parallel,
}
}
// Commit executes statements in batches with commits.
//
// Example:
//
// apoc.periodic.commit('MATCH (n) WHERE n.processed = false RETURN n LIMIT $limit', {limit: 1000})
func Commit(statement string, params map[string]interface{}) map[string]interface{} {
limit := 1000
if l, ok := params["limit"].(int); ok {
limit = l
}
return map[string]interface{}{
"updates": 0,
"executions": 0,
"runtime": 0,
"batches": 0,
"failedBatches": 0,
"batchErrors": map[string]interface{}{},
"limit": limit,
}
}
// Repeat executes a statement repeatedly with a delay.
//
// Example:
//
// apoc.periodic.repeat('cleanup', 'MATCH (n:Temp) DELETE n', 60)
func Repeat(name, statement string, rate int64) context.CancelFunc {
ctx, cancel := context.WithCancel(context.Background())
go func() {
ticker := time.NewTicker(time.Duration(rate) * time.Second)
defer ticker.Stop()
for {
select {
case <-ctx.Done():
return
case <-ticker.C:
// Execute statement
fmt.Printf("Executing periodic task '%s': %s\n", name, statement)
}
}
}()
return cancel
}
// Schedule schedules a statement to run at specific times.
//
// Example:
//
// apoc.periodic.schedule('backup', '0 0 * * *', 'CALL apoc.export.json.all()')
func Schedule(name, cron, statement string) context.CancelFunc {
ctx, cancel := context.WithCancel(context.Background())
go func() {
// Parse cron expression and schedule
// Placeholder - would implement cron scheduling
for {
select {
case <-ctx.Done():
return
case <-time.After(1 * time.Hour):
fmt.Printf("Executing scheduled task '%s': %s\n", name, statement)
}
}
}()
return cancel
}
// Countdown executes a statement after a delay.
//
// Example:
//
// apoc.periodic.countdown('cleanup', 'MATCH (n:Temp) DELETE n', 300)
func Countdown(name, statement string, delay int64) {
go func() {
time.Sleep(time.Duration(delay) * time.Second)
fmt.Printf("Executing countdown task '%s': %s\n", name, statement)
// Execute statement
}()
}
// Cancel cancels a periodic task.
//
// Example:
//
// apoc.periodic.cancel('cleanup')
func Cancel(name string) bool {
// Placeholder - would cancel named task
return true
}
// List lists all periodic tasks.
//
// Example:
//
// apoc.periodic.list() => [{name: 'cleanup', rate: 60, ...}]
func List() []map[string]interface{} {
// Placeholder - would list active tasks
return []map[string]interface{}{}
}
// Submit submits a background job.
//
// Example:
//
// apoc.periodic.submit('job1', 'MATCH (n) RETURN count(n)')
func Submit(name, statement string) map[string]interface{} {
go func() {
fmt.Printf("Executing background job '%s': %s\n", name, statement)
// Execute statement
}()
return map[string]interface{}{
"name": name,
"delay": 0,
"rate": 0,
"done": false,
"cancelled": false,
}
}
// Rock executes a statement on a schedule until stopped.
//
// Example:
//
// apoc.periodic.rock('sync', 'CALL apoc.load.json(...)', 300)
func Rock(name, statement string, rate int64) context.CancelFunc {
return Repeat(name, statement, rate)
}
// Truncate truncates large batch operations.
//
// Example:
//
// apoc.periodic.truncate({table: 'logs', batchSize: 10000})
func Truncate(config map[string]interface{}) map[string]interface{} {
batchSize := 10000
if bs, ok := config["batchSize"].(int); ok {
batchSize = bs
}
return map[string]interface{}{
"deleted": 0,
"batches": 0,
"batchSize": batchSize,
}
}