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prop224: Directory cache support

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This implements the proposal 224 directory descriptor cache store and lookup
functionalities. Furthermore, it merges the OOM call for the HSDir cache with
current protocol v2 and the new upcoming v3.

Add hs_cache.{c|h} with store/lookup API.

Closes #18572

Signed-off-by: David Goulet <dgoulet@torproject.org>
Signed-off-by: George Kadianakis <desnacked@riseup.net>
This commit is contained in:
David Goulet
2016-03-29 15:08:04 -04:00
committed by David Goulet
parent 473f99bf7b
commit 025610612d
11 changed files with 483 additions and 74 deletions
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src/or/rendcache.h
+10 -3
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@@ -53,10 +53,17 @@ typedef enum {
REND_CACHE_TYPE_SERVICE = 2,
} rend_cache_type_t;
/* Return maximum lifetime in seconds of a cache entry. */
static inline time_t
rend_cache_max_entry_lifetime(void)
{
return REND_CACHE_MAX_AGE + REND_CACHE_MAX_SKEW;
}
void rend_cache_init(void);
void rend_cache_clean(time_t now, rend_cache_type_t cache_type);
void rend_cache_failure_clean(time_t now);
void rend_cache_clean_v2_descs_as_dir(time_t now, size_t min_to_remove);
size_t rend_cache_clean_v2_descs_as_dir(time_t cutoff);
void rend_cache_purge(void);
void rend_cache_free_all(void);
int rend_cache_lookup_entry(const char *query, int version,
@@ -77,6 +84,8 @@ void rend_cache_intro_failure_note(rend_intro_point_failure_t failure,
const uint8_t *identity,
const char *service_id);
void rend_cache_failure_purge(void);
void rend_cache_decrement_allocation(size_t n);
void rend_cache_increment_allocation(size_t n);
#ifdef RENDCACHE_PRIVATE
@@ -89,8 +98,6 @@ STATIC int cache_failure_intro_lookup(const uint8_t *identity,
const char *service_id,
rend_cache_failure_intro_t
**intro_entry);
STATIC void rend_cache_decrement_allocation(size_t n);
STATIC void rend_cache_increment_allocation(size_t n);
STATIC rend_cache_failure_intro_t *rend_cache_failure_intro_entry_new(
rend_intro_point_failure_t failure);
STATIC rend_cache_failure_t *rend_cache_failure_entry_new(void);