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lighttpd2/include/lighttpd/actions.h

109 lines
3.2 KiB

#ifndef _LIGHTTPD_ACTIONS_H_
#define _LIGHTTPD_ACTIONS_H_
#ifndef _LIGHTTPD_BASE_H_
#error Please include <lighttpd/base.h> instead of this file
#endif
/* action type */
typedef enum {
ACTION_TSETTING,
ACTION_TFUNCTION,
ACTION_TCONDITION,
ACTION_TLIST,
ACTION_TBALANCER
} action_type;
typedef enum {
BACKEND_OVERLOAD,
BACKEND_DEAD
} backend_error;
struct action_regex_stack_element {
GString *string;
GMatchInfo *match_info;
};
typedef struct action_regex_stack_element action_regex_stack_element;
struct action_stack {
GArray* stack;
GArray* regex_stack;
gboolean backend_failed;
backend_error backend_error;
};
/* param is the param registered with the callbacks;
* in context the function can save extra data (like data for the stat-call)
* If the context gets popped from the action stack and context is not zero,
* the cleanup callback gets called.
* you should not use *context without a cleanup callback!!!
*/
typedef handler_t (*ActionFunc)(vrequest *vr, gpointer param, gpointer *context);
typedef handler_t (*ActionCleanup)(vrequest *vr, gpointer param, gpointer context);
typedef void (*ActionFree)(server *srv, gpointer param);
struct action_func {
ActionFunc func;
ActionCleanup cleanup;
ActionFree free;
gpointer param;
};
typedef struct action_func action_func;
typedef handler_t (*BackendSelect)(vrequest *vr, gboolean backlog_provided, gpointer param, gpointer *context);
typedef handler_t (*BackendFallback)(vrequest *vr, gboolean backlog_provided, gpointer param, gpointer *context, backend_error error);
typedef handler_t (*BackendFinished)(vrequest *vr, gpointer param, gpointer context);
typedef void (*BalancerFree)(server *srv, gpointer param);
struct balancer_func {
BackendSelect select;
BackendFallback fallback;
BackendFinished finished;
BalancerFree free;
gpointer param;
gboolean provide_backlog;
};
typedef struct balancer_func balancer_func;
struct action {
gint refcount;
action_type type;
union {
option_set setting;
struct {
condition *cond;
action *target; /** action target to jump to if condition is fulfilled */
action *target_else; /** like above but if condition is not fulfilled */
} condition;
action_func function;
GArray* list; /** array of (action*) */
balancer_func balancer;
} data;
};
/* no new/free function, so just use the struct direct (i.e. not a pointer) */
LI_API void action_stack_init(action_stack *as);
LI_API void action_stack_reset(vrequest *vr, action_stack *as);
LI_API void action_stack_clear(vrequest *vr, action_stack *as);
/** handle sublist now, remember current position (stack) */
LI_API void action_enter(struct vrequest *vr, action *a);
LI_API handler_t action_execute(struct vrequest *vr);
LI_API void action_release(server *srv, action *a);
LI_API void action_acquire(action *a);
/* create new action */
LI_API action *action_new_setting(option_set setting);
LI_API action *action_new_function(ActionFunc func, ActionCleanup fcleanup, ActionFree ffree, gpointer param);
LI_API action *action_new_list();
LI_API action *action_new_condition(condition *cond, action *target, action *target_else);
LI_API action *action_new_balancer(BackendSelect bselect, BackendFallback bfallback, BackendFinished bfinished, BalancerFree bfree, gpointer param, gboolean provide_backlog);
#endif