fetch_ml/native/queue_index/queue_index.h
Jeremie Fraeys d408a60eb1
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2026-02-12 13:28:15 -05:00

65 lines
2.1 KiB
C

#ifndef QUEUE_INDEX_H
#define QUEUE_INDEX_H
#include <stddef.h>
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
// Opaque handle for queue index
typedef struct qi_index qi_index_t;
// Task structure - matches Go queue.Task fields
// Fixed-size for binary format (no dynamic allocation in hot path)
typedef struct qi_task {
char id[64]; // Task ID
char job_name[128]; // Job name
int64_t priority; // Higher = more important
int64_t created_at; // Unix timestamp (nanoseconds)
int64_t next_retry; // Unix timestamp (nanoseconds), 0 if none
char status[16]; // "queued", "running", "finished", "failed"
uint32_t retries; // Current retry count
} qi_task_t;
// Index operations
qi_index_t* qi_open(const char* queue_dir);
void qi_close(qi_index_t* idx);
// Batch operations (amortize CGo overhead)
int qi_add_tasks(qi_index_t* idx, const qi_task_t* tasks, uint32_t count);
int qi_update_tasks(qi_index_t* idx, const qi_task_t* tasks, uint32_t count);
int qi_remove_tasks(qi_index_t* idx, const char** task_ids, uint32_t count);
// Priority queue operations
int qi_get_next_batch(qi_index_t* idx, qi_task_t* out_tasks, uint32_t max_count, uint32_t* out_count);
int qi_peek_next(qi_index_t* idx, qi_task_t* out_task);
// Query operations
int qi_get_task_by_id(qi_index_t* idx, const char* task_id, qi_task_t* out_task);
int qi_get_all_tasks(qi_index_t* idx, qi_task_t** out_tasks, size_t* count);
int qi_get_tasks_by_status(qi_index_t* idx, const char* status, qi_task_t** out_tasks, size_t* count);
// Index maintenance
int qi_rebuild_index(qi_index_t* idx);
int qi_compact_index(qi_index_t* idx);
// Memory management
void qi_free_task_array(qi_task_t* tasks);
void qi_free_string_array(char** strings, size_t count);
// Error handling
const char* qi_last_error(qi_index_t* idx);
void qi_clear_error(qi_index_t* idx);
// Utility
uint64_t qi_get_index_version(qi_index_t* idx);
int64_t qi_get_index_mtime(qi_index_t* idx);
size_t qi_get_task_count(qi_index_t* idx, const char* status);
#ifdef __cplusplus
}
#endif
#endif // QUEUE_INDEX_H