136 lines
4.4 KiB
C
136 lines
4.4 KiB
C
//
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// Created by nicol on 2018-03-18.
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//
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#ifndef ESC_ESC_H
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#define ESC_ESC_H
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#include <stdint.h>
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// bool
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typedef int bool_t;
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#define BOOL_TRUE 1
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#define BOOL_FALSE 0
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// array
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typedef struct st_array array_t;
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typedef void (*array_deallocator)(void*);
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array_t* array_create(size_t n, ...);
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void array_destroy(array_t* array, array_deallocator destroyer);
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// uuid
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#if defined(_WIN32) && defined(UUID_DEFINED)
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#undef uuid_t
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#endif
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typedef struct st_uuid uuid_t;
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uuid_t* uuid_create();
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void uuid_destroy(uuid_t*);
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// buffer
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typedef struct st_buffer buffer_t;
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void buffer_destroy(buffer_t*);
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buffer_t* buffer_from_string(const char* str);
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size_t buffer_size(buffer_t* b);
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// error
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#define ERROR_MSG_SIZE 1024
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typedef struct st_error {
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const char* file;
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int line;
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int code;
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char message[ERROR_MSG_SIZE];
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} error_t;
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// esc
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#define ESC_VERSION_NOSTREAM -1
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#define ESC_VERSION_EMPTYSTREAM -1
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#define ESC_VERSION_ANY -2
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typedef struct st_esc_position esc_position_t;
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typedef struct st_esc_connection_settings esc_connection_settings_t;
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typedef struct st_esc_connection esc_connection_t;
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typedef struct st_esc_credentials esc_credentials_t;
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typedef struct st_esc_recorded_event {
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uuid_t* event_id;
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const char* event_type;
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int64_t event_number;
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const char *event_stream_id;
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int64_t created_epoch;
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buffer_t* data;
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buffer_t* metadata;
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} esc_recorded_event_t;
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typedef struct st_esc_resolved_event {
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esc_recorded_event_t* event;
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esc_recorded_event_t* link;
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esc_position_t* original_position;
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} esc_resolved_event_t;
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struct st_all_events_slice {
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char* read_direction;
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esc_position_t* from_position;
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esc_position_t* next_position;
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size_t n_events;
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esc_resolved_event_t** events;
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int is_end_of_stream;
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};
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typedef struct st_all_events_slice esc_all_events_slice_t;
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typedef struct st_esc_write_result {
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int64_t next_expected_version;
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esc_position_t* log_position;
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} esc_write_result_t;
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typedef struct st_esc_event_data esc_event_data_t;
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typedef struct st_esc_subscription esc_subscription_t;
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typedef void (*esc_event_appeared_t)(void* ctx, esc_subscription_t* s, esc_resolved_event_t* ev);
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typedef struct st_event_appeared_callback {
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esc_event_appeared_t fn;
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void* ctx;
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} esc_event_appeared_callback_t;
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typedef void (*esc_subscription_droppped_t)(void* ctx, esc_subscription_t* subscription, const char* reason, error_t* error);
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typedef struct st_subscription_dropped_callback {
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esc_subscription_droppped_t fn;
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void* ctx;
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} esc_subscription_dropped_callback_t;
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esc_connection_settings_t* const esc_default_connection_settings;
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// Connection
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esc_connection_t* esc_connection_create(esc_connection_settings_t* connection_settings, const char* addr, const char* connection_name);
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void esc_connection_destroy(esc_connection_t* conn);
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int esc_connection_connect(esc_connection_t* conn);
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void esc_connection_close(esc_connection_t* conn);
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esc_credentials_t* esc_credentials_create(const char* username, const char* password);
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void esc_credentials_destroy(esc_credentials_t* creds);
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esc_event_data_t* esc_event_data_create(uuid_t* event_id, const char* event_type, bool_t is_json, buffer_t* data, buffer_t* metadata);
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void esc_event_data_destroy(esc_event_data_t*);
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esc_write_result_t* esc_append_to_stream(esc_connection_t* conn, const char* stream, int64_t expected_version, array_t* events);
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void esc_write_result_destroy(esc_write_result_t* write_result);
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esc_all_events_slice_t* esc_connection_read_all_forward(esc_connection_t* conn, esc_position_t* last_checkpoint, unsigned int count, esc_credentials_t* credentials);
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void esc_all_events_slice_destroy(esc_all_events_slice_t* all_events_slice);
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error_t* esc_connection_last_error(esc_connection_t* conn);
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// Subscriptions
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extern esc_event_appeared_callback_t esc_empty_event_appeared_callback;
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extern esc_subscription_dropped_callback_t esc_empty_subscription_dropped_callback;
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esc_subscription_t* esc_connection_subscribe_to_all(esc_connection_t* conn, bool_t resolve_link_tos, esc_event_appeared_callback_t event_appeared_callback, esc_subscription_dropped_callback_t subscription_dropped_callback, esc_credentials_t* credentials);
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void esc_subscription_stop(esc_subscription_t* subscription);
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void esc_subscription_destroy(esc_subscription_t* subscription);
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// Formatting
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const char* uuid_format(uuid_t* uuid, char* buf, size_t buf_size);
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const char* esc_position_format(esc_position_t* position, char* buffer, size_t buf_size);
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#endif //ESC_ESC_H
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