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CLIENT-3300 Improve transaction example.
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Fix duplicate system library includes in examples makefile.
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@BrianNichols
BrianNichols committed Jan 24, 2025
1 parent da2bf9a commit ff2be82
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177 changes: 115 additions & 62 deletions examples/basic_examples/transaction/src/main/example.c
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,7 @@
#include <stdlib.h>

#include <aerospike/aerospike.h>
#include <aerospike/aerospike_batch.h>
#include <aerospike/aerospike_key.h>
#include <aerospike/aerospike_txn.h>
#include <aerospike/as_error.h>
Expand All @@ -31,114 +32,166 @@

#include "example_utils.h"

static void
abort_txn(aerospike* as, as_txn* txn)
{
as_error err;
as_status status = aerospike_abort(as, &err, txn, NULL);

if (status != AEROSPIKE_OK) {
LOG("aerospike_abort() returned %d - %s", err.code, err.message);
}
example_cleanup(as);
}
static as_status run_commands(aerospike* as, as_txn* txn);

int
main(int argc, char* argv[])
{
// Parse command line arguments.
if (! example_get_opts(argc, argv, EXAMPLE_BASIC_OPTS)) {
exit(-1);
return -1;
}

// Connect to cluster.
as_error err;
as_status status;
aerospike as;

example_connect_to_aerospike(&as);
example_remove_test_record(&as);

// Initialize transaction.
as_txn txn;
as_txn_init(&txn);
LOG("Initialize transaction: %" PRId64, (int64_t)txn.id);
printf("Initialize transaction: %" PRIu64 "\n", txn.id);

// Run commands in a transaction. The commands must use a single namespace and
// the namespace must be configured as strong-consistency.
status = run_commands(&as, &txn);

if (status == AEROSPIKE_OK) {
printf("Commit transaction: %" PRIu64 "\n", txn.id);
as_commit_status commit_status;
status = aerospike_commit(&as, &err, &txn, &commit_status);

if (status != AEROSPIKE_OK) {
printf("aerospike_commit() returned %d - %s\n", err.code, err.message);
// Do not call aerospike_abort() if the commit fails.
if (commit_status == AS_COMMIT_MARK_ROLL_FORWARD_ABANDONED) {
// The commit read-verify step succeeded, but the transaction monitor
// could not be marked for roll-forward. In this case, the transaction
// could be re-committed.
printf("Transaction can be re-committed\n");
}
else {
// The commit read-verify step failed. The transaction has been
// permanently aborted.
printf("Transaction aborted\n");
}
}
}
else {
printf("Abort transaction: %" PRIu64 "\n", txn.id);
as_status s = aerospike_abort(&as, &err, &txn, NULL);

// Perform commands in a transaction.
as_policy_write pw;
as_policy_write_copy(&as.config.policies.write, &pw);
pw.base.txn = &txn;
if (s != AEROSPIKE_OK) {
printf("aerospike_abort() returned %d - %s\n", err.code, err.message);
}
}

// Cleanup.
as_txn_destroy(&txn);
aerospike_close(&as, &err);
aerospike_destroy(&as);
return status == AEROSPIKE_OK? 0 : -1;
}

static bool batch_write_cb(const as_batch_result* results, uint32_t n_keys, void* udata);

static as_status
run_commands(aerospike* as, as_txn* txn)
{
as_error err;
as_status status;

LOG("aerospike_key_put()");
printf("Write record\n");

as_policy_write pw;
as_policy_write_copy(&as->config.policies.write, &pw);
pw.base.txn = txn;

as_key key;
as_key_init_int64(&key, "test", "demoset", 1);
as_key_init_int64(&key, g_namespace, g_set, 1);

as_record rec;
as_record_inita(&rec, 1);
as_record_set_int64(&rec, "a", 1234);

as_error err;
status = aerospike_key_put(as, &err, &pw, &key, &rec);

if (aerospike_key_put(&as, &err, &pw, &key, &rec) != AEROSPIKE_OK) {
LOG("aerospike_key_put() returned %d - %s", err.code, err.message);
abort_txn(&as, &txn);
exit(-1);
if (status != AEROSPIKE_OK) {
printf("aerospike_key_put() 1 returned %d - %s\n", err.code, err.message);
return status;
}
as_record_destroy(&rec);

LOG("aerospike_key_put()");
printf("Write more records in a batch\n");

as_key_init_int64(&key, "test", "demoset", 2);
as_record_set_int64(&rec, "b", 5678);
as_policy_batch pb;
as_policy_batch_copy(&as->config.policies.batch_parent_write, &pb);
pb.base.txn = txn;

if (aerospike_key_put(&as, &err, &pw, &key, &rec) != AEROSPIKE_OK) {
LOG("aerospike_key_put() returned %d - %s", err.code, err.message);
abort_txn(&as, &txn);
exit(-1);
as_operations ops;
as_operations_inita(&ops, 1);
as_operations_add_write_int64(&ops, "c", 9999);

as_batch batch;
as_batch_inita(&batch, 2);

for (uint32_t i = 0; i < 2; i++) {
as_key_init_int64(as_batch_keyat(&batch, i), g_namespace, g_set, i);
}
as_record_destroy(&rec);

LOG("aerospike_key_get()");
status = aerospike_batch_operate(as, &err, &pb, NULL, &batch, &ops, batch_write_cb, NULL);
as_operations_destroy(&ops);

if (status != AEROSPIKE_OK) {
printf("aerospike_batch_operate() returned %d - %s\n", err.code, err.message);
return status;
}
as_batch_destroy(&batch);

printf("Read record\n");

as_policy_read pr;
as_policy_read_copy(&as.config.policies.read, &pr);
pr.base.txn = &txn;
as_policy_read_copy(&as->config.policies.read, &pr);
pr.base.txn = txn;

as_key_init_int64(&key, "test", "demoset", 3);
as_key_init_int64(&key, g_namespace, g_set, 3);

as_record* recp = NULL;
as_status status = aerospike_key_get(&as, &err, &pr, &key, &recp);
status = aerospike_key_get(as, &err, &pr, &key, &recp);

if (status != AEROSPIKE_OK && status != AEROSPIKE_ERR_RECORD_NOT_FOUND) {
LOG("aerospike_key_get() returned %d - %s", err.code, err.message);
abort_txn(&as, &txn);
exit(-1);
printf("aerospike_key_get() returned %d - %s\n", err.code, err.message);
return status;
}
as_record_destroy(recp);

LOG("aerospike_key_remove()");
printf("Delete record\n");

as_policy_remove prem;
as_policy_remove_copy(&as.config.policies.remove, &prem);
prem.base.txn = &txn;
prem.durable_delete = true;
as_policy_remove_copy(&as->config.policies.remove, &prem);
prem.base.txn = txn;
prem.durable_delete = true; // Required when deleting records in a transaction.

status = aerospike_key_remove(&as, &err, &prem, &key);
status = aerospike_key_remove(as, &err, &prem, &key);

if (status != AEROSPIKE_OK && status != AEROSPIKE_ERR_RECORD_NOT_FOUND) {
LOG("aerospike_key_remove() returned %d - %s", err.code, err.message);
abort_txn(&as, &txn);
exit(-1);
printf("aerospike_key_remove() returned %d - %s\n", err.code, err.message);
return status;
}

LOG("Commit transaction: %" PRId64, (int64_t)txn.id);
return AEROSPIKE_OK;
}

static bool
batch_write_cb(const as_batch_result* results, uint32_t n_keys, void* udata)
{
for (uint32_t i = 0; i < n_keys; i++) {
const as_batch_result* r = &results[i];

if (aerospike_commit(&as, &err, &txn, NULL) != AEROSPIKE_OK) {
LOG("aerospike_commit() returned %d - %s", err.code, err.message);
// Do not call aerospike_abort() when commit fails.
// aerospike_commit() will attempt an abort on failure.
example_cleanup(&as);
exit(-1);
if (r->result != AEROSPIKE_OK) {
printf("batch row[%u] returned %d\n", i, r->result);
}
}

// Cleanup transaction.
as_txn_destroy(&txn);
example_cleanup(&as);
return 0;
return true;
}
7 changes: 0 additions & 7 deletions examples/project/Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -106,13 +106,6 @@ endif

LD_FLAGS += -lssl -lcrypto -lpthread -lm -lz $(LINK_SUFFIX)

ifeq ($(OS),Linux)
LD_FLAGS += -lrt -ldl
else ifeq ($(OS),FreeBSD)
LD_FLAGS += -lrt
endif

LD_FLAGS += -lm -lz
CC = cc

###############################################################################
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