src/lib-dict/dict-fail.c

/* Copyright (c) 2017-2018 Dovecot authors, see the included COPYING file */

#include "lib.h"
#include "dict.h"
#include "dict-private.h"

struct dict_iterate_context dict_iter_unsupported =
{
    .dict = &dict_driver_fail,
};

struct dict_transaction_context dict_transaction_unsupported =
{
        .dict = &dict_driver_fail,
};

static int dict_fail_init(struct dict *dict_driver ATTR_UNUSED,
              const char *uri ATTR_UNUSED,
              const struct dict_settings *set ATTR_UNUSED,
              struct dict **dict_r ATTR_UNUSED, const char **error_r)
{
    *error_r = "Unsupported operation (dict does not support this feature)";
    return -1;
}

static void dict_fail_deinit(struct dict *dict ATTR_UNUSED)
{
}

static void dict_fail_wait(struct dict *dict ATTR_UNUSED)
{
}

static int dict_fail_lookup(struct dict *dict ATTR_UNUSED, pool_t pool ATTR_UNUSED,
                const char *key ATTR_UNUSED, const char **value_r ATTR_UNUSED,
                const char **error_r)
{
    *error_r = "Unsupported operation (dict does not support this feature)";
    return -1;
}

static struct dict_iterate_context *
dict_fail_iterate_init(struct dict *dict ATTR_UNUSED, const char *const *paths ATTR_UNUSED,
               enum dict_iterate_flags flags ATTR_UNUSED)
{
    return &dict_iter_unsupported;
}

static bool dict_fail_iterate(struct dict_iterate_context *ctx ATTR_UNUSED,
                  const char **key_r ATTR_UNUSED, const char **value_r ATTR_UNUSED)
{
    return FALSE;
}

static int dict_fail_iterate_deinit(struct dict_iterate_context *ctx ATTR_UNUSED,
                    const char **error_r)
{
    *error_r = "Unsupported operation (dict does not support this feature)";
    return -1;
}

static struct dict_transaction_context *dict_fail_transaction_init(struct dict *dict ATTR_UNUSED)
{
    return &dict_transaction_unsupported;
}

static void dict_fail_transaction_commit(struct dict_transaction_context *ctx ATTR_UNUSED,
                     bool async ATTR_UNUSED,
                     dict_transaction_commit_callback_t *callback,
                     void *context)
{
    struct dict_commit_result res = {
        .ret = DICT_COMMIT_RET_FAILED,
        .error = "Unsupported operation (dict does not support this feature)"
    };
    if (callback != NULL)
        callback(&res, context);
}

static void dict_fail_transaction_rollback(struct dict_transaction_context *ctx ATTR_UNUSED)
{
}

static void dict_fail_set(struct dict_transaction_context *ctx ATTR_UNUSED,
              const char *key ATTR_UNUSED, const char *value ATTR_UNUSED)
{
}

static void dict_fail_unset(struct dict_transaction_context *ctx ATTR_UNUSED,
                const char *key ATTR_UNUSED)
{
}

static void dict_fail_atomic_inc(struct dict_transaction_context *ctx ATTR_UNUSED,
                 const char *key ATTR_UNUSED, long long diff ATTR_UNUSED)
{
}

static bool dict_fail_switch_ioloop(struct dict *dict ATTR_UNUSED)
{
    return TRUE;
}

static void dict_fail_set_timestamp(struct dict_transaction_context *ctx ATTR_UNUSED,
                    const struct timespec *ts ATTR_UNUSED)
{
}

struct dict dict_driver_fail = {
    .name = "fail",
    .v = {
        .init = dict_fail_init,
        .deinit = dict_fail_deinit,
        .wait = dict_fail_wait,
        .lookup = dict_fail_lookup,
        .iterate_init = dict_fail_iterate_init,
        .iterate = dict_fail_iterate,
        .iterate_deinit = dict_fail_iterate_deinit,
        .transaction_init = dict_fail_transaction_init,
        .transaction_commit = dict_fail_transaction_commit,
        .transaction_rollback = dict_fail_transaction_rollback,
        .set = dict_fail_set,
        .unset = dict_fail_unset,
        .atomic_inc = dict_fail_atomic_inc,
        .lookup_async = NULL,
        .switch_ioloop = dict_fail_switch_ioloop,
        .set_timestamp = dict_fail_set_timestamp
    },
};