sdskv-server.cc 80.4 KB
Newer Older
Matthieu Dorier's avatar
Matthieu Dorier committed
1 2 3 4 5 6 7
/*
 * (C) 2015 The University of Chicago
 * 
 * See COPYRIGHT in top-level directory.
 */

#include <map>
Matthieu Dorier's avatar
Matthieu Dorier committed
8
#include <iostream>
Matthieu Dorier's avatar
Matthieu Dorier committed
9
#include <unordered_map>
10 11
#include <remi/remi-client.h>
#include <remi/remi-server.h>
Matthieu Dorier's avatar
Matthieu Dorier committed
12 13 14 15 16 17 18 19 20 21
#define SDSKV
#include "datastore/datastore_factory.h"
#include "sdskv-rpc-types.h"
#include "sdskv-server.h"

struct sdskv_server_context_t
{
    std::unordered_map<sdskv_database_id_t, AbstractDataStore*> databases;
    std::map<std::string, sdskv_database_id_t> name2id;
    std::map<sdskv_database_id_t, std::string> id2name;
22
    std::map<std::string, sdskv_compare_fn> compfunctions;
23 24
    remi_client_t   remi_client;
    remi_provider_t remi_provider;
25 26 27
    sdskv_pre_migration_callback_fn pre_migration_callback;
    sdskv_post_migration_callback_fn post_migration_callback;
    void* migration_uargs;
28

29 30 31 32
    ABT_rwlock lock; // write-locked during migration, read-locked by all other
    // operations. There should be something better to avoid locking everything
    // but we are going with that for simplicity for now.

33
    hg_id_t sdskv_put_id;
Matthieu Dorier's avatar
Matthieu Dorier committed
34
    hg_id_t sdskv_put_multi_id;
35 36
    hg_id_t sdskv_bulk_put_id;
    hg_id_t sdskv_get_id;
Matthieu Dorier's avatar
Matthieu Dorier committed
37
    hg_id_t sdskv_get_multi_id;
38 39
    hg_id_t sdskv_exists_id;
    hg_id_t sdskv_erase_id;
Matthieu Dorier's avatar
Matthieu Dorier committed
40
    hg_id_t sdskv_erase_multi_id;
41
    hg_id_t sdskv_length_id;
Matthieu Dorier's avatar
Matthieu Dorier committed
42
    hg_id_t sdskv_length_multi_id;
43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59
    hg_id_t sdskv_bulk_get_id;
    hg_id_t sdskv_open_id;
    hg_id_t sdskv_list_keys_id;
    hg_id_t sdskv_list_keyvals_id;
    /* migration */
    hg_id_t sdskv_migrate_keys_id;
    hg_id_t sdskv_migrate_key_range_id;
    hg_id_t sdskv_migrate_keys_prefixed_id;
    hg_id_t sdskv_migrate_all_keys_id;
    hg_id_t sdskv_migrate_database_id;
};

template<typename F>
struct scoped_call {
    F _f;
    scoped_call(const F& f) : _f(f) {}
    ~scoped_call() { _f(); }
Matthieu Dorier's avatar
Matthieu Dorier committed
60 61
};

62 63 64 65 66
template<typename F>
inline scoped_call<F> at_exit(F&& f) {
    return scoped_call<F>(std::forward<F>(f));
}

Matthieu Dorier's avatar
Matthieu Dorier committed
67
DECLARE_MARGO_RPC_HANDLER(sdskv_put_ult)
Matthieu Dorier's avatar
Matthieu Dorier committed
68
DECLARE_MARGO_RPC_HANDLER(sdskv_put_multi_ult)
Matthieu Dorier's avatar
Matthieu Dorier committed
69
DECLARE_MARGO_RPC_HANDLER(sdskv_length_ult)
Matthieu Dorier's avatar
Matthieu Dorier committed
70
DECLARE_MARGO_RPC_HANDLER(sdskv_length_multi_ult)
Matthieu Dorier's avatar
Matthieu Dorier committed
71
DECLARE_MARGO_RPC_HANDLER(sdskv_get_ult)
Matthieu Dorier's avatar
Matthieu Dorier committed
72
DECLARE_MARGO_RPC_HANDLER(sdskv_get_multi_ult)
Matthieu Dorier's avatar
Matthieu Dorier committed
73 74 75
DECLARE_MARGO_RPC_HANDLER(sdskv_open_ult)
DECLARE_MARGO_RPC_HANDLER(sdskv_bulk_put_ult)
DECLARE_MARGO_RPC_HANDLER(sdskv_bulk_get_ult)
76
DECLARE_MARGO_RPC_HANDLER(sdskv_list_keys_ult)
77
DECLARE_MARGO_RPC_HANDLER(sdskv_list_keyvals_ult)
Matthieu Dorier's avatar
Matthieu Dorier committed
78
DECLARE_MARGO_RPC_HANDLER(sdskv_erase_ult)
Matthieu Dorier's avatar
Matthieu Dorier committed
79
DECLARE_MARGO_RPC_HANDLER(sdskv_erase_multi_ult)
80
DECLARE_MARGO_RPC_HANDLER(sdskv_exists_ult)
81 82 83 84
DECLARE_MARGO_RPC_HANDLER(sdskv_migrate_keys_ult)
DECLARE_MARGO_RPC_HANDLER(sdskv_migrate_key_range_ult)
DECLARE_MARGO_RPC_HANDLER(sdskv_migrate_keys_prefixed_ult)
DECLARE_MARGO_RPC_HANDLER(sdskv_migrate_all_keys_ult)
85
DECLARE_MARGO_RPC_HANDLER(sdskv_migrate_database_ult)
Matthieu Dorier's avatar
Matthieu Dorier committed
86

Matthieu Dorier's avatar
Matthieu Dorier committed
87 88
static void sdskv_server_finalize_cb(void *data);

89 90 91 92
static int sdskv_pre_migration_callback(remi_fileset_t fileset, void* uargs);

static int sdskv_post_migration_callback(remi_fileset_t fileset, void* uargs);

Matthieu Dorier's avatar
Matthieu Dorier committed
93 94
extern "C" int sdskv_provider_register(
        margo_instance_id mid,
95
        uint16_t provider_id,
Matthieu Dorier's avatar
Matthieu Dorier committed
96 97 98 99
        ABT_pool abt_pool,
        sdskv_provider_t* provider)
{
    sdskv_server_context_t *tmp_svr_ctx;
100
    int ret;
Matthieu Dorier's avatar
Matthieu Dorier committed
101 102 103 104 105

    /* check if a provider with the same multiplex id already exists */
    {
        hg_id_t id;
        hg_bool_t flag;
106
        margo_provider_registered_name(mid, "sdskv_put_rpc", provider_id, &id, &flag);
Matthieu Dorier's avatar
Matthieu Dorier committed
107
        if(flag == HG_TRUE) {
108
            fprintf(stderr, "sdskv_provider_register(): a provider with the same provider id (%d) already exists\n", provider_id);
109
            return SDSKV_ERR_MERCURY;
Matthieu Dorier's avatar
Matthieu Dorier committed
110 111 112
        }
    }

113 114 115
    /* check if a REMI provider exists with the same provider id */
    {
        int flag;
116
        remi_provider_registered(mid, provider_id, &flag, NULL, NULL, NULL);
117 118 119 120 121 122
        if(flag) {
            fprintf(stderr, "sdskv_provider_register(): a REMI provider with the same (%d) already exists\n", provider_id);
            return SDSKV_ERR_REMI;
        }
    }

Matthieu Dorier's avatar
Matthieu Dorier committed
123
    /* allocate the resulting structure */    
Matthieu Dorier's avatar
Matthieu Dorier committed
124
    tmp_svr_ctx = new sdskv_server_context_t;
Matthieu Dorier's avatar
Matthieu Dorier committed
125
    if(!tmp_svr_ctx)
126
        return SDSKV_ERR_ALLOCATION;
Matthieu Dorier's avatar
Matthieu Dorier committed
127

128 129
    tmp_svr_ctx->remi_client   = REMI_CLIENT_NULL;
    tmp_svr_ctx->remi_provider = REMI_PROVIDER_NULL;
130 131 132
    tmp_svr_ctx->pre_migration_callback = NULL;
    tmp_svr_ctx->post_migration_callback = NULL;
    tmp_svr_ctx->migration_uargs = NULL;
133 134 135 136 137 138 139 140

    /* Create rwlock */
    ret = ABT_rwlock_create(&(tmp_svr_ctx->lock));
    if(ret != ABT_SUCCESS) {
        free(tmp_svr_ctx);
        return SDSKV_ERR_ARGOBOTS;
    }

Matthieu Dorier's avatar
Matthieu Dorier committed
141 142
    /* register RPCs */
    hg_id_t rpc_id;
143
    rpc_id = MARGO_REGISTER_PROVIDER(mid, "sdskv_put_rpc",
Matthieu Dorier's avatar
Matthieu Dorier committed
144
            put_in_t, put_out_t,
145
            sdskv_put_ult, provider_id, abt_pool);
146
    tmp_svr_ctx->sdskv_put_id = rpc_id;
147
    margo_register_data(mid, rpc_id, (void*)tmp_svr_ctx, NULL);
Matthieu Dorier's avatar
Matthieu Dorier committed
148 149 150 151 152
    rpc_id = MARGO_REGISTER_PROVIDER(mid, "sdskv_put_multi_rpc",
            put_multi_in_t, put_multi_out_t,
            sdskv_put_multi_ult, provider_id, abt_pool);
    tmp_svr_ctx->sdskv_put_multi_id = rpc_id;
    margo_register_data(mid, rpc_id, (void*)tmp_svr_ctx, NULL);
153
    rpc_id = MARGO_REGISTER_PROVIDER(mid, "sdskv_bulk_put_rpc",
Matthieu Dorier's avatar
Matthieu Dorier committed
154
            bulk_put_in_t, bulk_put_out_t,
155
            sdskv_bulk_put_ult, provider_id, abt_pool);
156
    tmp_svr_ctx->sdskv_bulk_put_id = rpc_id;
157 158
    margo_register_data(mid, rpc_id, (void*)tmp_svr_ctx, NULL);
    rpc_id = MARGO_REGISTER_PROVIDER(mid, "sdskv_get_rpc",
Matthieu Dorier's avatar
Matthieu Dorier committed
159
            get_in_t, get_out_t,
160
            sdskv_get_ult, provider_id, abt_pool);
161
    tmp_svr_ctx->sdskv_get_id = rpc_id;
162
    margo_register_data(mid, rpc_id, (void*)tmp_svr_ctx, NULL);
Matthieu Dorier's avatar
Matthieu Dorier committed
163 164 165 166 167
    rpc_id = MARGO_REGISTER_PROVIDER(mid, "sdskv_get_multi_rpc",
            get_multi_in_t, get_multi_out_t,
            sdskv_get_multi_ult, provider_id, abt_pool);
    tmp_svr_ctx->sdskv_get_multi_id = rpc_id;
    margo_register_data(mid, rpc_id, (void*)tmp_svr_ctx, NULL);
168
    rpc_id = MARGO_REGISTER_PROVIDER(mid, "sdskv_length_rpc",
Matthieu Dorier's avatar
Matthieu Dorier committed
169
            length_in_t, length_out_t,
170
            sdskv_length_ult, provider_id, abt_pool);
171
    tmp_svr_ctx->sdskv_length_id = rpc_id;
172
    margo_register_data(mid, rpc_id, (void*)tmp_svr_ctx, NULL);
Matthieu Dorier's avatar
Matthieu Dorier committed
173 174 175 176 177
    rpc_id = MARGO_REGISTER_PROVIDER(mid, "sdskv_length_multi_rpc",
            length_multi_in_t, length_multi_out_t,
            sdskv_length_multi_ult, provider_id, abt_pool);
    tmp_svr_ctx->sdskv_length_multi_id = rpc_id;
    margo_register_data(mid, rpc_id, (void*)tmp_svr_ctx, NULL);
178 179 180
    rpc_id = MARGO_REGISTER_PROVIDER(mid, "sdskv_exists_rpc",
            exists_in_t, exists_out_t,
            sdskv_exists_ult, provider_id, abt_pool);
181
    tmp_svr_ctx->sdskv_exists_id = rpc_id;
182
    margo_register_data(mid, rpc_id, (void*)tmp_svr_ctx, NULL);
183
    rpc_id = MARGO_REGISTER_PROVIDER(mid, "sdskv_bulk_get_rpc",
Matthieu Dorier's avatar
Matthieu Dorier committed
184
            bulk_get_in_t, bulk_get_out_t,
185
            sdskv_bulk_get_ult, provider_id, abt_pool);
186
    tmp_svr_ctx->sdskv_bulk_get_id = rpc_id;
187 188
    margo_register_data(mid, rpc_id, (void*)tmp_svr_ctx, NULL);
    rpc_id = MARGO_REGISTER_PROVIDER(mid, "sdskv_open_rpc",
Matthieu Dorier's avatar
Matthieu Dorier committed
189
            open_in_t, open_out_t,
190
            sdskv_open_ult, provider_id, abt_pool);
191
    tmp_svr_ctx->sdskv_open_id = rpc_id;
192 193
    margo_register_data(mid, rpc_id, (void*)tmp_svr_ctx, NULL);
    rpc_id = MARGO_REGISTER_PROVIDER(mid, "sdskv_list_keys_rpc",
194
            list_keys_in_t, list_keys_out_t,
195
            sdskv_list_keys_ult, provider_id, abt_pool);
196
    tmp_svr_ctx->sdskv_list_keys_id = rpc_id;
197 198
    margo_register_data(mid, rpc_id, (void*)tmp_svr_ctx, NULL);
    rpc_id = MARGO_REGISTER_PROVIDER(mid, "sdskv_list_keyvals_rpc",
199
            list_keyvals_in_t, list_keyvals_out_t,
200
            sdskv_list_keyvals_ult, provider_id, abt_pool);
201
    tmp_svr_ctx->sdskv_list_keyvals_id = rpc_id;
202 203
    margo_register_data(mid, rpc_id, (void*)tmp_svr_ctx, NULL);
    rpc_id = MARGO_REGISTER_PROVIDER(mid, "sdskv_erase_rpc",
Matthieu Dorier's avatar
Matthieu Dorier committed
204
            erase_in_t, erase_out_t,
205
            sdskv_erase_ult, provider_id, abt_pool);
206
    tmp_svr_ctx->sdskv_erase_id = rpc_id;
207
    margo_register_data(mid, rpc_id, (void*)tmp_svr_ctx, NULL);
Matthieu Dorier's avatar
Matthieu Dorier committed
208 209 210 211 212
    rpc_id = MARGO_REGISTER_PROVIDER(mid, "sdskv_erase_multi_rpc",
            erase_multi_in_t, erase_multi_out_t,
            sdskv_erase_multi_ult, provider_id, abt_pool);
    tmp_svr_ctx->sdskv_erase_multi_id = rpc_id;
    margo_register_data(mid, rpc_id, (void*)tmp_svr_ctx, NULL);
213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233
    /* migration RPC */
    rpc_id = MARGO_REGISTER_PROVIDER(mid, "sdskv_migrate_keys_rpc",
            migrate_keys_in_t, migrate_keys_out_t,
            sdskv_migrate_keys_ult, provider_id, abt_pool);
    tmp_svr_ctx->sdskv_migrate_keys_id = rpc_id;
    margo_register_data(mid, rpc_id, (void*)tmp_svr_ctx, NULL);
    rpc_id = MARGO_REGISTER_PROVIDER(mid, "sdskv_migrate_key_range_rpc",
            migrate_key_range_in_t, migrate_keys_out_t,
            sdskv_migrate_key_range_ult, provider_id, abt_pool);
    tmp_svr_ctx->sdskv_migrate_key_range_id = rpc_id;
    margo_register_data(mid, rpc_id, (void*)tmp_svr_ctx, NULL);
    rpc_id = MARGO_REGISTER_PROVIDER(mid, "sdskv_migrate_keys_prefixed_rpc",
            migrate_keys_prefixed_in_t, migrate_keys_out_t,
            sdskv_migrate_keys_prefixed_ult, provider_id, abt_pool);
    tmp_svr_ctx->sdskv_migrate_keys_prefixed_id = rpc_id;
    margo_register_data(mid, rpc_id, (void*)tmp_svr_ctx, NULL);
    rpc_id = MARGO_REGISTER_PROVIDER(mid, "sdskv_migrate_all_keys_rpc",
            migrate_all_keys_in_t, migrate_keys_out_t,
            sdskv_migrate_all_keys_ult, provider_id, abt_pool);
    tmp_svr_ctx->sdskv_migrate_all_keys_id = rpc_id;
    margo_register_data(mid, rpc_id, (void*)tmp_svr_ctx, NULL);
234 235 236 237 238 239 240
    rpc_id = MARGO_REGISTER_PROVIDER(mid, "sdskv_migrate_database_rpc",
            migrate_database_in_t, migrate_database_out_t,
            sdskv_migrate_database_ult, provider_id, abt_pool);
    tmp_svr_ctx->sdskv_migrate_database_id = rpc_id;
    margo_register_data(mid, rpc_id, (void*)tmp_svr_ctx, NULL);

    /* register a REMI client */
241
    ret = remi_client_init(mid, ABT_IO_INSTANCE_NULL, &(tmp_svr_ctx->remi_client));
242
    if(ret != REMI_SUCCESS) {
243
        sdskv_server_finalize_cb(tmp_svr_ctx);
244 245 246 247
        return SDSKV_ERR_REMI;
    }

    /* register a REMI provider */
248
    ret = remi_provider_register(mid, ABT_IO_INSTANCE_NULL, provider_id, abt_pool, &(tmp_svr_ctx->remi_provider));
249
    if(ret != REMI_SUCCESS) {
250
        sdskv_server_finalize_cb(tmp_svr_ctx);
251 252 253
        return SDSKV_ERR_REMI;
    }
    ret = remi_provider_register_migration_class(tmp_svr_ctx->remi_provider,
Matthieu Dorier's avatar
Matthieu Dorier committed
254
            "sdskv", sdskv_pre_migration_callback,
255 256
            sdskv_post_migration_callback, NULL, tmp_svr_ctx);
    if(ret != REMI_SUCCESS) {
257
        sdskv_server_finalize_cb(tmp_svr_ctx);
258 259 260
        return SDSKV_ERR_REMI;
    }

261 262 263
    /* install the bake server finalize callback */
    margo_push_finalize_callback(mid, &sdskv_server_finalize_cb, tmp_svr_ctx);

Matthieu Dorier's avatar
Matthieu Dorier committed
264 265 266
    if(provider != SDSKV_PROVIDER_IGNORE)
        *provider = tmp_svr_ctx;

267
    return SDSKV_SUCCESS;
Matthieu Dorier's avatar
Matthieu Dorier committed
268 269
}

270
extern "C" int sdskv_provider_add_comparison_function(
271 272 273 274 275 276 277 278 279 280 281
        sdskv_provider_t provider,
        const char* function_name,
        sdskv_compare_fn comp_fn) 
{
    if(provider->compfunctions.find(std::string(function_name))
        != provider->compfunctions.end())
        return SDSKV_ERR_COMP_FUNC;
    provider->compfunctions[std::string(function_name)] = comp_fn;
    return SDSKV_SUCCESS;
}

282
extern "C" int sdskv_provider_attach_database(
Matthieu Dorier's avatar
Matthieu Dorier committed
283
        sdskv_provider_t provider,
284
        const sdskv_config_t* config,
Matthieu Dorier's avatar
Matthieu Dorier committed
285 286
        sdskv_database_id_t* db_id)
{
287 288 289 290 291 292 293 294 295
    sdskv_compare_fn comp_fn = NULL;
    if(config->db_comp_fn_name) {
        std::string k(config->db_comp_fn_name);
        auto it = provider->compfunctions.find(k);
        if(it == provider->compfunctions.end())
            return SDSKV_ERR_COMP_FUNC;
        comp_fn = it->second;
    }

296 297
    auto db = datastore_factory::open_datastore(config->db_type, 
            std::string(config->db_name), std::string(config->db_path));
298
    if(db == nullptr) return SDSKV_ERR_DB_CREATE;
299
    if(comp_fn) {
300
        db->set_comparison_function(config->db_comp_fn_name, comp_fn);
301
    }
Matthieu Dorier's avatar
Matthieu Dorier committed
302
    sdskv_database_id_t id = (sdskv_database_id_t)(db);
303 304 305
    if(config->db_no_overwrite) {
        db->set_no_overwrite();
    }
Matthieu Dorier's avatar
Matthieu Dorier committed
306

307 308 309
    ABT_rwlock_wrlock(provider->lock);
    auto r = at_exit([provider]() { ABT_rwlock_unlock(provider->lock); });

310 311
    provider->name2id[std::string(config->db_name)] = id;
    provider->id2name[id] = std::string(config->db_name);
Matthieu Dorier's avatar
Matthieu Dorier committed
312 313
    provider->databases[id] = db;

314 315
    *db_id = id;

316
    return SDSKV_SUCCESS;
Matthieu Dorier's avatar
Matthieu Dorier committed
317 318 319 320 321 322
}

extern "C" int sdskv_provider_remove_database(
        sdskv_provider_t provider,
        sdskv_database_id_t db_id)
{
323 324
    ABT_rwlock_wrlock(provider->lock);
    auto r = at_exit([provider]() { ABT_rwlock_unlock(provider->lock); });
Matthieu Dorier's avatar
Matthieu Dorier committed
325 326 327 328 329 330 331
    if(provider->databases.count(db_id)) {
        auto dbname = provider->id2name[db_id];
        provider->id2name.erase(db_id);
        provider->name2id.erase(dbname);
        auto db = provider->databases[db_id];
        delete db;
        provider->databases.erase(db_id);
332
        return SDSKV_SUCCESS;
Matthieu Dorier's avatar
Matthieu Dorier committed
333
    } else {
334
        return SDSKV_ERR_UNKNOWN_DB;
Matthieu Dorier's avatar
Matthieu Dorier committed
335 336 337 338 339 340
    }
}

extern "C" int sdskv_provider_remove_all_databases(
        sdskv_provider_t provider)
{
341 342
    ABT_rwlock_wrlock(provider->lock);
    auto r = at_exit([provider]() { ABT_rwlock_unlock(provider->lock); });
Matthieu Dorier's avatar
Matthieu Dorier committed
343 344 345 346 347 348 349
    for(auto db : provider->databases) {
        delete db.second;
    }
    provider->databases.clear();
    provider->name2id.clear();
    provider->id2name.clear();

350
    return SDSKV_SUCCESS;
Matthieu Dorier's avatar
Matthieu Dorier committed
351 352 353 354 355 356
}

extern "C" int sdskv_provider_count_databases(
        sdskv_provider_t provider,
        uint64_t* num_db)
{
357 358
    ABT_rwlock_rdlock(provider->lock);
    auto r = at_exit([provider]() { ABT_rwlock_unlock(provider->lock); });
Matthieu Dorier's avatar
Matthieu Dorier committed
359
    *num_db = provider->databases.size();
360
    return SDSKV_SUCCESS;
Matthieu Dorier's avatar
Matthieu Dorier committed
361 362 363 364 365 366 367
}

extern "C" int sdskv_provider_list_databases(
        sdskv_provider_t provider,
        sdskv_database_id_t* targets)
{
    unsigned i = 0;
368 369
    ABT_rwlock_rdlock(provider->lock);
    auto r = at_exit([provider]() { ABT_rwlock_unlock(provider->lock); });
Matthieu Dorier's avatar
Matthieu Dorier committed
370 371 372 373
    for(auto p : provider->name2id) {
        targets[i] = p.second;
        i++;
    }
374
    return SDSKV_SUCCESS;
Matthieu Dorier's avatar
Matthieu Dorier committed
375 376
}

377 378 379 380 381 382 383
extern "C" int sdskv_provider_compute_database_size(
        sdskv_provider_t provider,
        sdskv_database_id_t database_id,
        size_t* size)
{
    int ret;
    // find the database
384
    ABT_rwlock_rdlock(provider->lock);
385 386
    auto it = provider->databases.find(database_id);
    if(it == provider->databases.end()) {
387
        ABT_rwlock_unlock(provider->lock);
388 389 390
        return SDSKV_ERR_UNKNOWN_DB;
    }
    auto database = it->second;
391 392
    ABT_rwlock_unlock(provider->lock);

393 394 395 396 397 398 399 400 401 402
    database->sync();

    /* create a fileset */
    remi_fileset_t fileset = database->create_and_populate_fileset();
    if(fileset == REMI_FILESET_NULL) {
        return SDSKV_OP_NOT_IMPL;
    }
    /* issue the migration */
    ret = remi_fileset_compute_size(fileset, 0, size);
    if(ret != REMI_SUCCESS) {
403
        std::cerr << "[SDSKV] error: remi_fileset_compute_size returned " << ret << std::endl;
404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420
        return SDSKV_ERR_REMI;
    }
    return SDSKV_SUCCESS;
}

extern "C" int sdskv_provider_set_migration_callbacks(
        sdskv_provider_t provider,
        sdskv_pre_migration_callback_fn pre_cb,
        sdskv_post_migration_callback_fn  post_cb,
        void* uargs)
{
    provider->pre_migration_callback = pre_cb;
    provider->post_migration_callback = post_cb;
    provider->migration_uargs = uargs;
    return SDSKV_SUCCESS;
}

Matthieu Dorier's avatar
Matthieu Dorier committed
421 422 423 424 425 426 427 428 429 430
static void sdskv_put_ult(hg_handle_t handle)
{
    hg_return_t hret;
    put_in_t in;
    put_out_t out;

    margo_instance_id mid = margo_hg_handle_get_instance(handle);
    assert(mid);
    const struct hg_info* info = margo_get_info(handle);
    sdskv_provider_t svr_ctx = 
431
        (sdskv_provider_t)margo_registered_data(mid, info->id);
Matthieu Dorier's avatar
Matthieu Dorier committed
432
    if(!svr_ctx) {
Matthieu Dorier's avatar
Matthieu Dorier committed
433
        fprintf(stderr, "Error (sdskv_put_ult): SDSKV could not find provider\n"); 
434
        out.ret = SDSKV_ERR_UNKNOWN_PR;
Matthieu Dorier's avatar
Matthieu Dorier committed
435 436 437 438
        margo_respond(handle, &out);
        margo_destroy(handle);
        return;
    }
439

Matthieu Dorier's avatar
Matthieu Dorier committed
440 441
    hret = margo_get_input(handle, &in);
    if(hret != HG_SUCCESS) {
442
        out.ret = SDSKV_ERR_MERCURY;
Matthieu Dorier's avatar
Matthieu Dorier committed
443 444 445 446 447
        margo_respond(handle, &out);
        margo_destroy(handle);
        return;
    }

448
    ABT_rwlock_rdlock(svr_ctx->lock);
Matthieu Dorier's avatar
Matthieu Dorier committed
449 450
    auto it = svr_ctx->databases.find(in.db_id);
    if(it == svr_ctx->databases.end()) {
451
        ABT_rwlock_unlock(svr_ctx->lock);
452
        out.ret = SDSKV_ERR_UNKNOWN_DB;
Matthieu Dorier's avatar
Matthieu Dorier committed
453 454 455 456 457
        margo_respond(handle, &out);
        margo_free_input(handle, &in);
        margo_destroy(handle);
        return;
    }
458 459
    auto db = it->second;
    ABT_rwlock_unlock(svr_ctx->lock);
Matthieu Dorier's avatar
Matthieu Dorier committed
460

461 462
    ds_bulk_t kdata(in.key.data, in.key.data+in.key.size);
    ds_bulk_t vdata(in.value.data, in.value.data+in.value.size);
Matthieu Dorier's avatar
Matthieu Dorier committed
463

464
    if(db->put(kdata, vdata)) {
465
        out.ret = SDSKV_SUCCESS;
Matthieu Dorier's avatar
Matthieu Dorier committed
466
    } else {
467
        out.ret = SDSKV_ERR_PUT;
Matthieu Dorier's avatar
Matthieu Dorier committed
468 469 470 471 472 473 474 475
    }

    margo_respond(handle, &out);
    margo_free_input(handle, &in);
    margo_destroy(handle);
}
DEFINE_MARGO_RPC_HANDLER(sdskv_put_ult)

Matthieu Dorier's avatar
Matthieu Dorier committed
476
static void sdskv_put_multi_ult(hg_handle_t handle)
Matthieu Dorier's avatar
Matthieu Dorier committed
477
{
Matthieu Dorier's avatar
Matthieu Dorier committed
478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498
    hg_return_t hret;
    put_multi_in_t in;
    put_multi_out_t out;
    out.ret = SDSKV_SUCCESS;
    std::vector<char> local_keys_buffer;
    std::vector<char> local_vals_buffer;
    hg_bulk_t local_keys_bulk_handle;
    hg_bulk_t local_vals_bulk_handle;

    auto r1 = at_exit([&handle]() { margo_destroy(handle); });
    auto r2 = at_exit([&handle,&out]() { margo_respond(handle, &out); });


    margo_instance_id mid = margo_hg_handle_get_instance(handle);
    const struct hg_info* info = margo_get_info(handle);
    sdskv_provider_t svr_ctx = 
        (sdskv_provider_t)margo_registered_data(mid, info->id);
    if(!svr_ctx) {
        out.ret = SDSKV_ERR_UNKNOWN_PR;
        return;
    }
Matthieu Dorier's avatar
Matthieu Dorier committed
499

500

Matthieu Dorier's avatar
Matthieu Dorier committed
501 502 503 504 505 506 507
    hret = margo_get_input(handle, &in);
    if(hret != HG_SUCCESS) {
        out.ret = SDSKV_ERR_MERCURY;
        return;
    }
    auto r3 = at_exit([&handle,&in]() { margo_free_input(handle, &in); });

508
    ABT_rwlock_rdlock(svr_ctx->lock);
Matthieu Dorier's avatar
Matthieu Dorier committed
509 510
    auto it = svr_ctx->databases.find(in.db_id);
    if(it == svr_ctx->databases.end()) {
511
        ABT_rwlock_unlock(svr_ctx->lock); 
Matthieu Dorier's avatar
Matthieu Dorier committed
512 513 514
        out.ret = SDSKV_ERR_UNKNOWN_DB;
        return;
    }
515 516
    auto db = it->second;
    ABT_rwlock_unlock(svr_ctx->lock);
Matthieu Dorier's avatar
Matthieu Dorier committed
517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568

    // allocate a buffer to receive the keys and a buffer to receive the values
    local_keys_buffer.resize(in.keys_bulk_size);
    local_vals_buffer.resize(in.vals_bulk_size);
    std::vector<void*> keys_addr(1); keys_addr[0] = (void*)local_keys_buffer.data();
    std::vector<void*> vals_addr(1); vals_addr[0] = (void*)local_vals_buffer.data();
    
    /* create bulk handle to receive keys */
    hret = margo_bulk_create(mid, 1, keys_addr.data(), &in.keys_bulk_size,
            HG_BULK_WRITE_ONLY, &local_keys_bulk_handle);
    if(hret != HG_SUCCESS) {
        out.ret = SDSKV_ERR_MERCURY;
        return;
    }
    auto r6 = at_exit([&local_keys_bulk_handle]() { margo_bulk_free(local_keys_bulk_handle); });

    /* create bulk handle to receive values */
    hret = margo_bulk_create(mid, 1, vals_addr.data(), &in.vals_bulk_size,
            HG_BULK_WRITE_ONLY, &local_vals_bulk_handle);
    if(hret != HG_SUCCESS) {
        out.ret = SDSKV_ERR_MERCURY;
        return;
    }
    auto r7 = at_exit([&local_vals_bulk_handle]() { margo_bulk_free(local_vals_bulk_handle); });

    /* transfer keys */
    hret = margo_bulk_transfer(mid, HG_BULK_PULL, info->addr, in.keys_bulk_handle, 0,
            local_keys_bulk_handle, 0, in.keys_bulk_size);
    if(hret != HG_SUCCESS) {
        out.ret = SDSKV_ERR_MERCURY;
        return;
    }

    /* transfer values */
    hret = margo_bulk_transfer(mid, HG_BULK_PULL, info->addr, in.vals_bulk_handle, 0,
            local_vals_bulk_handle, 0, in.vals_bulk_size);
    if(hret != HG_SUCCESS) {
        out.ret = SDSKV_ERR_MERCURY;
        return;
    }

    /* interpret beginning of the key buffer as a list of key sizes */
    hg_size_t* key_sizes = (hg_size_t*)local_keys_buffer.data();
    /* interpret beginning of the value buffer as a list of value sizes */
    hg_size_t* val_sizes = (hg_size_t*)local_vals_buffer.data();

    /* go through the key/value pairs and insert them */
    uint64_t keys_offset = sizeof(hg_size_t)*in.num_keys;
    uint64_t vals_offset = sizeof(hg_size_t)*in.num_keys;
    for(unsigned i=0; i < in.num_keys; i++) {
        ds_bulk_t kdata(local_keys_buffer.data()+keys_offset, local_keys_buffer.data()+keys_offset+key_sizes[i]);
        ds_bulk_t vdata(local_vals_buffer.data()+vals_offset, local_vals_buffer.data()+vals_offset+val_sizes[i]);
569
        db->put(kdata, vdata);
Matthieu Dorier's avatar
Matthieu Dorier committed
570 571 572 573 574 575 576 577 578 579
        keys_offset += key_sizes[i];
        vals_offset += val_sizes[i];
    }

    return;
}
DEFINE_MARGO_RPC_HANDLER(sdskv_put_multi_ult)

static void sdskv_length_ult(hg_handle_t handle)
{
Matthieu Dorier's avatar
Matthieu Dorier committed
580 581 582 583 584 585 586 587
    hg_return_t hret;
    length_in_t in;
    length_out_t out;

    margo_instance_id mid = margo_hg_handle_get_instance(handle);
    assert(mid);
    const struct hg_info* info = margo_get_info(handle);
    sdskv_provider_t svr_ctx = 
588
        (sdskv_provider_t)margo_registered_data(mid, info->id);
Matthieu Dorier's avatar
Matthieu Dorier committed
589 590
    if(!svr_ctx) {
        fprintf(stderr, "Error: SDSKV could not find provider\n"); 
591
        out.ret = SDSKV_ERR_UNKNOWN_PR;
Matthieu Dorier's avatar
Matthieu Dorier committed
592 593 594 595 596 597 598
        margo_respond(handle, &out);
        margo_destroy(handle);
        return;
    }

    hret = margo_get_input(handle, &in);
    if(hret != HG_SUCCESS) {
599
        out.ret = SDSKV_ERR_MERCURY;
Matthieu Dorier's avatar
Matthieu Dorier committed
600 601 602 603 604
        margo_respond(handle, &out);
        margo_destroy(handle);
        return;
    }

605
    ABT_rwlock_rdlock(svr_ctx->lock);
Matthieu Dorier's avatar
Matthieu Dorier committed
606 607
    auto it = svr_ctx->databases.find(in.db_id);
    if(it == svr_ctx->databases.end()) {
608
        ABT_rwlock_unlock(svr_ctx->lock);
609
        out.ret = SDSKV_ERR_UNKNOWN_DB;
Matthieu Dorier's avatar
Matthieu Dorier committed
610 611 612 613 614
        margo_respond(handle, &out);
        margo_free_input(handle, &in);
        margo_destroy(handle);
        return;
    }
615 616
    auto db = it->second;
    ABT_rwlock_unlock(svr_ctx->lock);
Matthieu Dorier's avatar
Matthieu Dorier committed
617
    
618
    ds_bulk_t kdata(in.key.data, in.key.data+in.key.size);
Matthieu Dorier's avatar
Matthieu Dorier committed
619 620

    ds_bulk_t vdata;
621
    if(db->get(kdata, vdata)) {
Matthieu Dorier's avatar
Matthieu Dorier committed
622
        out.size = vdata.size();
623
        out.ret  = SDSKV_SUCCESS;
Matthieu Dorier's avatar
Matthieu Dorier committed
624 625
    } else {
        out.size = 0;
626
        out.ret  = SDSKV_ERR_UNKNOWN_KEY;
Matthieu Dorier's avatar
Matthieu Dorier committed
627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647
    }

    margo_respond(handle, &out);
    margo_free_input(handle, &in);
    margo_destroy(handle); 

    return;
}
DEFINE_MARGO_RPC_HANDLER(sdskv_length_ult)

static void sdskv_get_ult(hg_handle_t handle)
{

    hg_return_t hret;
    get_in_t in;
    get_out_t out;

    margo_instance_id mid = margo_hg_handle_get_instance(handle);
    assert(mid);
    const struct hg_info* info = margo_get_info(handle);
    sdskv_provider_t svr_ctx = 
648
        (sdskv_provider_t)margo_registered_data(mid, info->id);
Matthieu Dorier's avatar
Matthieu Dorier committed
649 650
    if(!svr_ctx) {
        fprintf(stderr, "Error: SDSKV could not find provider\n"); 
651
        out.ret = SDSKV_ERR_UNKNOWN_PR;
Matthieu Dorier's avatar
Matthieu Dorier committed
652 653 654 655 656 657 658
        margo_respond(handle, &out);
        margo_destroy(handle);
        return;
    }

    hret = margo_get_input(handle, &in);
    if(hret != HG_SUCCESS) {
659
        out.ret = SDSKV_ERR_MERCURY;
660 661
        out.value.data = nullptr;
        out.value.size = 0;
Matthieu Dorier's avatar
Matthieu Dorier committed
662 663 664 665 666
        margo_respond(handle, &out);
        margo_destroy(handle);
        return;
    }

667
    ABT_rwlock_rdlock(svr_ctx->lock);
Matthieu Dorier's avatar
Matthieu Dorier committed
668 669
    auto it = svr_ctx->databases.find(in.db_id);
    if(it == svr_ctx->databases.end()) {
670
        ABT_rwlock_unlock(svr_ctx->lock);
671
        out.ret = SDSKV_ERR_UNKNOWN_DB;
672 673
        out.value.data = nullptr;
        out.value.size = 0;
Matthieu Dorier's avatar
Matthieu Dorier committed
674 675 676 677 678
        margo_respond(handle, &out);
        margo_free_input(handle, &in);
        margo_destroy(handle);
        return;
    }
679 680
    auto db = it->second;
    ABT_rwlock_unlock(svr_ctx->lock);
Matthieu Dorier's avatar
Matthieu Dorier committed
681
    
682
    ds_bulk_t kdata(in.key.data, in.key.data+in.key.size);
Matthieu Dorier's avatar
Matthieu Dorier committed
683 684

    ds_bulk_t vdata;
685
    if(db->get(kdata, vdata)) {
Matthieu Dorier's avatar
Matthieu Dorier committed
686
        if(vdata.size() <= in.vsize) {
687 688
            out.value.size = vdata.size();
            out.value.data = vdata.data();
689
            out.ret = SDSKV_SUCCESS;
Matthieu Dorier's avatar
Matthieu Dorier committed
690
        } else {
691 692
            out.value.size = 0;
            out.value.data = nullptr;
693
            out.ret = SDSKV_ERR_SIZE;
Matthieu Dorier's avatar
Matthieu Dorier committed
694 695
        }
    } else {
696 697
        out.value.size = 0;
        out.value.data = nullptr;
698
        out.ret   = SDSKV_ERR_UNKNOWN_KEY;
Matthieu Dorier's avatar
Matthieu Dorier committed
699 700 701 702 703 704 705 706 707 708
    }

    margo_respond(handle, &out);
    margo_free_input(handle, &in);
    margo_destroy(handle); 

    return;
}
DEFINE_MARGO_RPC_HANDLER(sdskv_get_ult)

Matthieu Dorier's avatar
Matthieu Dorier committed
709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742
static void sdskv_get_multi_ult(hg_handle_t handle)
{

    hg_return_t hret;
    get_multi_in_t in;
    get_multi_out_t out;
    out.ret = SDSKV_SUCCESS;
    std::vector<char> local_keys_buffer;
    std::vector<char> local_vals_buffer;
    hg_bulk_t local_keys_bulk_handle;
    hg_bulk_t local_vals_bulk_handle;

    auto r1 = at_exit([&handle]() { margo_destroy(handle); });
    auto r2 = at_exit([&handle,&out]() { margo_respond(handle, &out); });

    /* get margo instance and provider */
    margo_instance_id mid = margo_hg_handle_get_instance(handle);
    const struct hg_info* info = margo_get_info(handle);
    sdskv_provider_t svr_ctx = 
        (sdskv_provider_t)margo_registered_data(mid, info->id);
    if(!svr_ctx) {
        out.ret = SDSKV_ERR_UNKNOWN_PR;
        return;
    }

    /* deserialize input */
    hret = margo_get_input(handle, &in);
    if(hret != HG_SUCCESS) {
        out.ret = SDSKV_ERR_MERCURY;
        return;
    }
    auto r3 = at_exit([&handle,&in]() { margo_free_input(handle, &in); });

    /* find the target database */
743
    ABT_rwlock_rdlock(svr_ctx->lock);
Matthieu Dorier's avatar
Matthieu Dorier committed
744 745
    auto it = svr_ctx->databases.find(in.db_id);
    if(it == svr_ctx->databases.end()) {
746
        ABT_rwlock_unlock(svr_ctx->lock);
Matthieu Dorier's avatar
Matthieu Dorier committed
747 748 749
        out.ret = SDSKV_ERR_UNKNOWN_DB;
        return;
    }
750 751
    auto db = it->second;
    ABT_rwlock_unlock(svr_ctx->lock);
Matthieu Dorier's avatar
Matthieu Dorier committed
752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810

    /* allocate buffers to receive the keys */
    local_keys_buffer.resize(in.keys_bulk_size);
    std::vector<void*> keys_addr(1);
    keys_addr[0] = (void*)local_keys_buffer.data();
    
    /* create bulk handle to receive key sizes and packed keys */
    hret = margo_bulk_create(mid, 1, keys_addr.data(), &in.keys_bulk_size,
            HG_BULK_WRITE_ONLY, &local_keys_bulk_handle);
    if(hret != HG_SUCCESS) {
        out.ret = SDSKV_ERR_MERCURY;
        return;
    }
    auto r6 = at_exit([&local_keys_bulk_handle]() { margo_bulk_free(local_keys_bulk_handle); });

    /* allocate buffer to send/receive the values */
    local_vals_buffer.resize(in.vals_bulk_size);
    std::vector<void*> vals_addr(1);
    vals_addr[0] = (void*)local_vals_buffer.data();

    /* create bulk handle to receive max value sizes and to send values */
    hret = margo_bulk_create(mid, 1, vals_addr.data(), &in.vals_bulk_size,
            HG_BULK_READWRITE, &local_vals_bulk_handle);
    if(hret != HG_SUCCESS) {
        out.ret = SDSKV_ERR_MERCURY;
        return;
    }
    auto r7 = at_exit([&local_vals_bulk_handle]() { margo_bulk_free(local_vals_bulk_handle); });

    /* transfer keys */
    hret = margo_bulk_transfer(mid, HG_BULK_PULL, info->addr, in.keys_bulk_handle, 0,
            local_keys_bulk_handle, 0, in.keys_bulk_size);
    if(hret != HG_SUCCESS) {
        out.ret = SDSKV_ERR_MERCURY;
        return;
    }

    /* transfer sizes allocated by user for the values (beginning of value segment) */
    hret = margo_bulk_transfer(mid, HG_BULK_PULL, info->addr, in.vals_bulk_handle, 0,
            local_vals_bulk_handle, 0, in.num_keys*sizeof(hg_size_t));
    if(hret != HG_SUCCESS) {
        out.ret = SDSKV_ERR_MERCURY;
        return;
    }

    /* interpret beginning of the key buffer as a list of key sizes */
    hg_size_t* key_sizes = (hg_size_t*)local_keys_buffer.data();
    /* find beginning of packed keys */
    char* packed_keys = local_keys_buffer.data() + in.num_keys*sizeof(hg_size_t);
    /* interpret beginning of the value buffer as a list of value sizes */
    hg_size_t* val_sizes = (hg_size_t*)local_vals_buffer.data();
    /* find beginning of region where to pack values */
    char* packed_values = local_vals_buffer.data() + in.num_keys*sizeof(hg_size_t);

    /* go through the key/value pairs and get the values from the database */
    for(unsigned i=0; i < in.num_keys; i++) {
        ds_bulk_t kdata(packed_keys, packed_keys+key_sizes[i]);
        ds_bulk_t vdata;
        size_t client_allocated_value_size = val_sizes[i];
811
        if(db->get(kdata, vdata)) {
Matthieu Dorier's avatar
Matthieu Dorier committed
812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870
            if(vdata.size() > val_sizes[i]) {
                val_sizes[i] = 0;
            } else {
                val_sizes[i] = vdata.size();
                memcpy(packed_values, vdata.data(), val_sizes[i]);
            }
        } else {
            val_sizes[i] = 0;
        }
        packed_keys += key_sizes[i];
        packed_values += client_allocated_value_size;
    }

    /* do a PUSH operation to push back the values to the client */
    hret = margo_bulk_transfer(mid, HG_BULK_PUSH, info->addr, in.vals_bulk_handle, 0,
            local_vals_bulk_handle, 0, in.vals_bulk_size);
    if(hret != HG_SUCCESS) {
        out.ret = SDSKV_ERR_MERCURY;
        return;
    }

    return;
}
DEFINE_MARGO_RPC_HANDLER(sdskv_get_multi_ult)

static void sdskv_length_multi_ult(hg_handle_t handle)
{

    hg_return_t hret;
    length_multi_in_t in;
    length_multi_out_t out;
    out.ret = SDSKV_SUCCESS;
    std::vector<char> local_keys_buffer;
    std::vector<hg_size_t> local_vals_size_buffer;
    hg_bulk_t local_keys_bulk_handle;
    hg_bulk_t local_vals_size_bulk_handle;

    auto r1 = at_exit([&handle]() { margo_destroy(handle); });
    auto r2 = at_exit([&handle,&out]() { margo_respond(handle, &out); });

    /* get margo instance and provider */
    margo_instance_id mid = margo_hg_handle_get_instance(handle);
    const struct hg_info* info = margo_get_info(handle);
    sdskv_provider_t svr_ctx = 
        (sdskv_provider_t)margo_registered_data(mid, info->id);
    if(!svr_ctx) {
        out.ret = SDSKV_ERR_UNKNOWN_PR;
        return;
    }

    /* deserialize input */
    hret = margo_get_input(handle, &in);
    if(hret != HG_SUCCESS) {
        out.ret = SDSKV_ERR_MERCURY;
        return;
    }
    auto r3 = at_exit([&handle,&in]() { margo_free_input(handle, &in); });

    /* find the target database */
871
    ABT_rwlock_rdlock(svr_ctx->lock);
Matthieu Dorier's avatar
Matthieu Dorier committed
872 873
    auto it = svr_ctx->databases.find(in.db_id);
    if(it == svr_ctx->databases.end()) {
874
        ABT_rwlock_unlock(svr_ctx->lock);
Matthieu Dorier's avatar
Matthieu Dorier committed
875 876 877
        out.ret = SDSKV_ERR_UNKNOWN_DB;
        return;
    }
878 879
    auto db = it->second;
    ABT_rwlock_unlock(svr_ctx->lock);
Matthieu Dorier's avatar
Matthieu Dorier committed
880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926

    /* allocate buffers to receive the keys */
    local_keys_buffer.resize(in.keys_bulk_size);
    std::vector<void*> keys_addr(1);
    keys_addr[0] = (void*)local_keys_buffer.data();
    
    /* create bulk handle to receive key sizes and packed keys */
    hret = margo_bulk_create(mid, 1, keys_addr.data(), &in.keys_bulk_size,
            HG_BULK_WRITE_ONLY, &local_keys_bulk_handle);
    if(hret != HG_SUCCESS) {
        out.ret = SDSKV_ERR_MERCURY;
        return;
    }
    auto r6 = at_exit([&local_keys_bulk_handle]() { margo_bulk_free(local_keys_bulk_handle); });

    /* allocate buffer to send the values */
    local_vals_size_buffer.resize(in.num_keys);
    std::vector<void*> vals_sizes_addr(1);
    hg_size_t local_vals_size_buffer_size = in.num_keys * sizeof(hg_size_t);
    vals_sizes_addr[0] = (void*)local_vals_size_buffer.data();

    /* create bulk handle to send values sizes */
    hret = margo_bulk_create(mid, 1, vals_sizes_addr.data(), &local_vals_size_buffer_size,
            HG_BULK_READ_ONLY, &local_vals_size_bulk_handle);
    if(hret != HG_SUCCESS) {
        out.ret = SDSKV_ERR_MERCURY;
        return;
    }
    auto r7 = at_exit([&local_vals_size_bulk_handle]() { margo_bulk_free(local_vals_size_bulk_handle); });

    /* transfer keys */
    hret = margo_bulk_transfer(mid, HG_BULK_PULL, info->addr, in.keys_bulk_handle, 0,
            local_keys_bulk_handle, 0, in.keys_bulk_size);
    if(hret != HG_SUCCESS) {
        out.ret = SDSKV_ERR_MERCURY;
        return;
    }

    /* interpret beginning of the key buffer as a list of key sizes */
    hg_size_t* key_sizes = (hg_size_t*)local_keys_buffer.data();
    /* find beginning of packed keys */
    char* packed_keys = local_keys_buffer.data() + in.num_keys*sizeof(hg_size_t);

    /* go through the key/value pairs and get the values from the database */
    for(unsigned i=0; i < in.num_keys; i++) {
        ds_bulk_t kdata(packed_keys, packed_keys+key_sizes[i]);
        ds_bulk_t vdata;
927
        if(db->get(kdata, vdata)) {
Matthieu Dorier's avatar
Matthieu Dorier committed
928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946
            local_vals_size_buffer[i] = vdata.size();
        } else {
            local_vals_size_buffer[i] = 0;
        }
        packed_keys += key_sizes[i];
    }

    /* do a PUSH operation to push back the value sizes to the client */
    hret = margo_bulk_transfer(mid, HG_BULK_PUSH, info->addr, in.vals_size_bulk_handle, 0,
            local_vals_size_bulk_handle, 0, local_vals_size_buffer_size);
    if(hret != HG_SUCCESS) {
        out.ret = SDSKV_ERR_MERCURY;
        return;
    }

    return;
}
DEFINE_MARGO_RPC_HANDLER(sdskv_length_multi_ult)

Matthieu Dorier's avatar
Matthieu Dorier committed
947 948 949 950 951 952 953 954 955 956 957
static void sdskv_open_ult(hg_handle_t handle)
{

    hg_return_t hret;
    open_in_t in;
    open_out_t out;

    margo_instance_id mid = margo_hg_handle_get_instance(handle);
    assert(mid);
    const struct hg_info* info = margo_get_info(handle);
    sdskv_provider_t svr_ctx = 
958
        (sdskv_provider_t)margo_registered_data(mid, info->id);
Matthieu Dorier's avatar
Matthieu Dorier committed
959
    if(!svr_ctx) {
Matthieu Dorier's avatar
Matthieu Dorier committed
960
        fprintf(stderr, "Error (sdskv_open_ult): SDSKV could not find provider with id\n"); 
961
        out.ret = SDSKV_ERR_UNKNOWN_PR;
Matthieu Dorier's avatar
Matthieu Dorier committed
962 963 964 965 966 967 968
        margo_respond(handle, &out);
        margo_destroy(handle);
        return;
    }

    hret = margo_get_input(handle, &in);
    if(hret != HG_SUCCESS) {
969
        out.ret = SDSKV_ERR_MERCURY;
Matthieu Dorier's avatar
Matthieu Dorier committed
970 971 972 973 974
        margo_respond(handle, &out);
        margo_destroy(handle);
        return;
    }

975
    ABT_rwlock_rdlock(svr_ctx->lock);
Matthieu Dorier's avatar
Matthieu Dorier committed
976 977
    auto it = svr_ctx->name2id.find(std::string(in.name));
    if(it == svr_ctx->name2id.end()) {
978
        ABT_rwlock_unlock(svr_ctx->lock);
979
        out.ret = SDSKV_ERR_DB_NAME;
Matthieu Dorier's avatar
Matthieu Dorier committed
980 981 982 983 984
        margo_respond(handle, &out);
        margo_free_input(handle, &in);
        margo_destroy(handle);
        return;
    }
985 986
    auto db = it->second;
    ABT_rwlock_unlock(svr_ctx->lock);
Matthieu Dorier's avatar
Matthieu Dorier committed
987

988
    out.db_id = db;
989
    out.ret  = SDSKV_SUCCESS;
Matthieu Dorier's avatar
Matthieu Dorier committed
990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009

    margo_respond(handle, &out);
    margo_free_input(handle, &in);
    margo_destroy(handle);
    return;
}
DEFINE_MARGO_RPC_HANDLER(sdskv_open_ult)

static void sdskv_bulk_put_ult(hg_handle_t handle)
{

    hg_return_t hret;
    bulk_put_in_t in;
    bulk_put_out_t out;
    hg_bulk_t bulk_handle;

    margo_instance_id mid = margo_hg_handle_get_instance(handle);
    assert(mid);
    const struct hg_info* info = margo_get_info(handle);
    sdskv_provider_t svr_ctx = 
1010
        (sdskv_provider_t)margo_registered_data(mid, info->id);
Matthieu Dorier's avatar
Matthieu Dorier committed
1011
    if(!svr_ctx) {
Matthieu Dorier's avatar
Matthieu Dorier committed
1012
        fprintf(stderr, "Error (sdskv_bulk_put_ult): SDSKV could not find provider\n"); 
1013
        out.ret = SDSKV_ERR_UNKNOWN_PR;
Matthieu Dorier's avatar
Matthieu Dorier committed
1014 1015 1016 1017 1018 1019 1020
        margo_respond(handle, &out);
        margo_destroy(handle);
        return;
    }

    hret = margo_get_input(handle, &in);
    if(hret != HG_SUCCESS) {
1021
        out.ret = SDSKV_ERR_MERCURY;
Matthieu Dorier's avatar
Matthieu Dorier committed
1022 1023 1024 1025 1026
        margo_respond(handle, &out);
        margo_destroy(handle);
        return;
    }

1027
    ABT_rwlock_rdlock(svr_ctx->lock);
1028
    auto it = svr_ctx->databases.find(in.db_id);
Matthieu Dorier's avatar
Matthieu Dorier committed
1029
    if(it == svr_ctx->databases.end()) {
1030
        ABT_rwlock_unlock(svr_ctx->lock);
1031
        out.ret = SDSKV_ERR_UNKNOWN_DB;
Matthieu Dorier's avatar
Matthieu Dorier committed
1032 1033 1034 1035 1036
        margo_respond(handle, &out);
        margo_free_input(handle, &in);
        margo_destroy(handle);
        return;
    }
1037 1038
    auto db = it->second;
    ABT_rwlock_unlock(svr_ctx->lock);
1039

1040
    ds_bulk_t vdata(in.vsize);
Matthieu Dorier's avatar
Matthieu Dorier committed
1041

1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066
    if(in.vsize > 0) {

        void *buffer = (void*)vdata.data();
        hg_size_t size = vdata.size();
        hret = margo_bulk_create(mid, 1, (void**)&buffer, &size,
                HG_BULK_WRITE_ONLY, &bulk_handle);
        if(hret != HG_SUCCESS) {
            out.ret = SDSKV_ERR_MERCURY;
            margo_respond(handle, &out);
            margo_free_input(handle, &in);
            margo_destroy(handle);
            return;
        }

        hret = margo_bulk_transfer(mid, HG_BULK_PULL, info->addr, in.handle, 0,
                bulk_handle, 0, vdata.size());
        if(hret != HG_SUCCESS) {
            out.ret = SDSKV_ERR_MERCURY;
            margo_respond(handle, &out);
            margo_free_input(handle, &in);
            margo_bulk_free(bulk_handle);
            margo_destroy(handle);
            return;
        }

Matthieu Dorier's avatar
Matthieu Dorier committed
1067
        margo_bulk_free(bulk_handle);
1068

Matthieu Dorier's avatar
Matthieu Dorier committed
1069 1070
    }

1071
    ds_bulk_t kdata(in.key.data, in.key.data+in.key.size);
Matthieu Dorier's avatar
Matthieu Dorier committed
1072

1073
    auto b = db->put(kdata, vdata);
Matthieu Dorier's avatar
Matthieu Dorier committed
1074 1075

    if(b) {
1076
        out.ret = SDSKV_SUCCESS;
Matthieu Dorier's avatar
Matthieu Dorier committed
1077
    } else {
1078
        out.ret = SDSKV_ERR_PUT;
Matthieu Dorier's avatar
Matthieu Dorier committed
1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100
    }

    margo_respond(handle, &out);
    margo_free_input(handle, &in);
    margo_destroy(handle);

    return;
}
DEFINE_MARGO_RPC_HANDLER(sdskv_bulk_put_ult)

static void sdskv_bulk_get_ult(hg_handle_t handle)
{

    hg_return_t hret;
    bulk_get_in_t in;
    bulk_get_out_t out;
    hg_bulk_t bulk_handle;

    margo_instance_id mid = margo_hg_handle_get_instance(handle);
    assert(mid);
    const struct hg_info* info = margo_get_info(handle);
    sdskv_provider_t svr_ctx = 
1101
        (sdskv_provider_t)margo_registered_data(mid, info->id);
Matthieu Dorier's avatar
Matthieu Dorier committed
1102
    if(!svr_ctx) {
Matthieu Dorier's avatar
Matthieu Dorier committed
1103
        fprintf(stderr, "Error (sdskv_bulk_get_ult): SDSKV could not find provider\n"); 
1104
        out.ret = SDSKV_ERR_UNKNOWN_PR;
Matthieu Dorier's avatar
Matthieu Dorier committed
1105 1106 1107 1108 1109 1110 1111
        margo_respond(handle, &out);
        margo_destroy(handle);
        return;
    }

    hret = margo_get_input(handle, &in);
    if(hret != HG_SUCCESS) {
1112
        out.ret = SDSKV_ERR_MERCURY;
Matthieu Dorier's avatar
Matthieu Dorier committed
1113 1114 1115 1116 1117
        margo_respond(handle, &out);
        margo_destroy(handle);
        return;
    }

1118
    ABT_rwlock_rdlock(svr_ctx->lock);
1119
    auto it = svr_ctx->databases.find(in.db_id);
Matthieu Dorier's avatar
Matthieu Dorier committed
1120
    if(it == svr_ctx->databases.end()) {
1121
        ABT_rwlock_unlock(svr_ctx->lock);
1122
        out.ret = SDSKV_ERR_UNKNOWN_DB;
Matthieu Dorier's avatar
Matthieu Dorier committed
1123 1124 1125 1126 1127
        margo_respond(handle, &out);
        margo_free_input(handle, &in);
        margo_destroy(handle);
        return;
    }
1128 1129
    auto db = it->second;
    ABT_rwlock_unlock(svr_ctx->lock);
Matthieu Dorier's avatar
Matthieu Dorier committed
1130
    
1131
    ds_bulk_t kdata(in.key.data, in.key.data+in.key.size);
Matthieu Dorier's avatar
Matthieu Dorier committed
1132 1133

    ds_bulk_t vdata;
1134
    auto b = db->get(kdata, vdata);
Matthieu Dorier's avatar
Matthieu Dorier committed
1135

1136
    if(!b || vdata.size() > in.vsize) {
Matthieu Dorier's avatar
Matthieu Dorier committed
1137
        out.size = 0;
1138
        out.ret = SDSKV_ERR_SIZE;
Matthieu Dorier's avatar
Matthieu Dorier committed
1139 1140 1141 1142 1143 1144 1145 1146
        margo_respond(handle, &out);
        margo_free_input(handle, &in);
        margo_destroy(handle);
        return;
    }

    void *buffer = (void*)vdata.data();
    hg_size_t size = vdata.size();
1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169
    if(size > 0) {
        hret = margo_bulk_create(mid, 1, (void**)&buffer, &size,
                HG_BULK_READ_ONLY, &bulk_handle);
        if(hret != HG_SUCCESS) {
            out.size = 0;
            out.ret = SDSKV_ERR_MERCURY;
            margo_respond(handle, &out);
            margo_free_input(handle, &in);
            margo_destroy(handle);
            return;
        }

        hret = margo_bulk_transfer(mid, HG_BULK_PUSH, info->addr, in.handle, 0,
                bulk_handle, 0, vdata.size());
        if(hret != HG_SUCCESS) {
            out.size = 0;
            out.ret = SDSKV_ERR_MERCURY;
            margo_respond(handle, &out);
            margo_free_input(handle, &in);
            margo_bulk_free(bulk_handle);
            margo_destroy(handle);
            return;
        }
Matthieu Dorier's avatar
Matthieu Dorier committed
1170 1171 1172 1173

        margo_bulk_free(bulk_handle);
    }

1174
    out.size = size;
1175
    out.ret  = SDSKV_SUCCESS;
Matthieu Dorier's avatar
Matthieu Dorier committed
1176 1177 1178 1179 1180 1181 1182 1183 1184

    margo_respond(handle, &out);
    margo_free_input(handle, &in);
    margo_destroy(handle);

    return;
}
DEFINE_MARGO_RPC_HANDLER(sdskv_bulk_get_ult)

Matthieu Dorier's avatar
Matthieu Dorier committed
1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195
static void sdskv_erase_ult(hg_handle_t handle)
{

    hg_return_t hret;
    erase_in_t in;
    erase_out_t out;

    margo_instance_id mid = margo_hg_handle_get_instance(handle);
    assert(mid);
    const struct hg_info* info = margo_get_info(handle);
    sdskv_provider_t svr_ctx = 
1196
        (sdskv_provider_t)margo_registered_data(mid, info->id);
Matthieu Dorier's avatar
Matthieu Dorier committed
1197
    if(!svr_ctx) {
Matthieu Dorier's avatar
Matthieu Dorier committed
1198
        fprintf(stderr, "Error (sdskv_erase_ult): SDSKV could not find provider\n"); 
1199
        out.ret = SDSKV_ERR_UNKNOWN_PR;
Matthieu Dorier's avatar
Matthieu Dorier committed
1200 1201 1202 1203 1204 1205 1206
        margo_respond(handle, &out);
        margo_destroy(handle);
        return;
    }

    hret = margo_get_input(handle, &in);
    if(hret != HG_SUCCESS) {
1207
        out.ret = SDSKV_ERR_MERCURY;
Matthieu Dorier's avatar
Matthieu Dorier committed
1208 1209 1210 1211 1212
        margo_respond(handle, &out);
        margo_destroy(handle);
        return;
    }

1213
    ABT_rwlock_rdlock(svr_ctx->lock);
Matthieu Dorier's avatar
Matthieu Dorier committed
1214 1215
    auto it = svr_ctx->databases.find(in.db_id);
    if(it == svr_ctx->databases.end()) {
1216
        ABT_rwlock_unlock(svr_ctx->lock);
1217
        out.ret = SDSKV_ERR_UNKNOWN_DB;
Matthieu Dorier's avatar
Matthieu Dorier committed
1218 1219 1220 1221 1222
        margo_respond(handle, &out);
        margo_free_input(handle, &in);
        margo_destroy(handle);
        return;
    }
1223 1224
    auto db = it->second;
    ABT_rwlock_unlock(svr_ctx->lock);
Matthieu Dorier's avatar
Matthieu Dorier committed
1225
    
1226
    ds_bulk_t kdata(in.key.data, in.key.data+in.key.size);
Matthieu Dorier's avatar
Matthieu Dorier committed
1227

1228
    if(db->erase(kdata)) {
1229
        out.ret   = SDSKV_SUCCESS;
Matthieu Dorier's avatar
Matthieu Dorier committed
1230
    } else {
1231
        out.ret   = SDSKV_ERR_ERASE;
Matthieu Dorier's avatar
Matthieu Dorier committed
1232 1233 1234 1235 1236 1237 1238 1239 1240 1241
    }

    margo_respond(handle, &out);
    margo_free_input(handle, &in);
    margo_destroy(handle); 

    return;
}
DEFINE_MARGO_RPC_HANDLER(sdskv_erase_ult)

Matthieu Dorier's avatar
Matthieu Dorier committed
1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273
static void sdskv_erase_multi_ult(hg_handle_t handle)
{

    hg_return_t hret;
    erase_multi_in_t in;
    erase_multi_out_t out;
    out.ret = SDSKV_SUCCESS;
    std::vector<char> local_keys_buffer;
    hg_bulk_t local_keys_bulk_handle;

    auto r1 = at_exit([&handle]() { margo_destroy(handle); });
    auto r2 = at_exit([&handle,&out]() { margo_respond(handle, &out); });

    /* get margo instance and provider */
    margo_instance_id mid = margo_hg_handle_get_instance(handle);
    const struct hg_info* info = margo_get_info(handle);
    sdskv_provider_t svr_ctx = 
        (sdskv_provider_t)margo_registered_data(mid, info->id);
    if(!svr_ctx) {
        out.ret = SDSKV_ERR_UNKNOWN_PR;
        return;
    }

    /* deserialize input */
    hret = margo_get_input(handle, &in);
    if(hret != HG_SUCCESS) {
        out.ret = SDSKV_ERR_MERCURY;
        return;
    }
    auto r3 = at_exit([&handle,&in]() { margo_free_input(handle, &in); });

    /* find the target database */
1274
    ABT_rwlock_rdlock(svr_ctx->lock);
Matthieu Dorier's avatar
Matthieu Dorier committed
1275 1276
    auto it = svr_ctx->databases.find(in.db_id);
    if(it == svr_ctx->databases.end()) {
1277
        ABT_rwlock_unlock(svr_ctx->lock);
Matthieu Dorier's avatar
Matthieu Dorier committed
1278 1279 1280
        out.ret = SDSKV_ERR_UNKNOWN_DB;
        return;
    }
1281 1282
    auto db = it->second;
    ABT_rwlock_unlock(svr_ctx->lock);
Matthieu Dorier's avatar
Matthieu Dorier committed
1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305

    /* allocate buffers to receive the keys */
    local_keys_buffer.resize(in.keys_bulk_size);
    std::vector<void*> keys_addr(1);
    keys_addr[0] = (void*)local_keys_buffer.data();
    
    /* create bulk handle to receive key sizes and packed keys */
    hret = margo_bulk_create(mid, 1, keys_addr.data(), &in.keys_bulk_size,
            HG_BULK_WRITE_ONLY, &local_keys_bulk_handle);
    if(hret != HG_SUCCESS) {
        out.ret = SDSKV_ERR_MERCURY;
        return;
    }
    auto r6 = at_exit([&local_keys_bulk_handle]() { margo_bulk_free(local_keys_bulk_handle); });

    /* interpret beginning of the key buffer as a list of key sizes */
    hg_size_t* key_sizes = (hg_size_t*)local_keys_buffer.data();
    /* find beginning of packed keys */
    char* packed_keys = local_keys_buffer.data() + in.num_keys*sizeof(hg_size_t);

    /* go through the key/value pairs and erase them */
    for(unsigned i=0; i < in.num_keys; i++) {
        ds_bulk_t kdata(packed_keys, packed_keys+key_sizes[i]);
1306
        db->erase(kdata);
Matthieu Dorier's avatar
Matthieu Dorier committed
1307 1308 1309 1310 1311 1312 1313
        packed_keys += key_sizes[i];
    }

    return;
}
DEFINE_MARGO_RPC_HANDLER(sdskv_erase_multi_ult)

1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326
static void sdskv_exists_ult(hg_handle_t handle)
{

    hg_return_t hret;
    exists_in_t in;
    exists_out_t out;

    margo_instance_id mid = margo_hg_handle_get_instance(handle);
    assert(mid);
    const struct hg_info* info = margo_get_info(handle);
    sdskv_provider_t svr_ctx = 
        (sdskv_provider_t)margo_registered_data(mid, info->id);
    if(!svr_ctx) {
Matthieu Dorier's avatar
Matthieu Dorier committed
1327
        fprintf(stderr, "Error (sdskv_exists_ult): SDSKV could not find provider\n"); 
1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341
        out.ret = SDSKV_ERR_UNKNOWN_PR;
        margo_respond(handle, &out);
        margo_destroy(handle);
        return;
    }

    hret = margo_get_input(handle, &in);
    if(hret != HG_SUCCESS) {
        out.ret = SDSKV_ERR_MERCURY;
        margo_respond(handle, &out);
        margo_destroy(handle);
        return;
    }

1342
    ABT_rwlock_rdlock(svr_ctx->lock);
1343 1344
    auto it = svr_ctx->databases.find(in.db_id);
    if(it == svr_ctx->databases.end()) {
1345
        ABT_rwlock_unlock(svr_ctx->lock);