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feat(db): Implement importer and listener for permanode #631

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The listener subscribes newly confirmed transactions from IRI and adds inserting tasks into the task queue of thread pool.

The importer reads confirmed transactions from historical transaction files dumped from IRI and adds inserting tasks into the task queue of thread pool.

Each worker in the thread pool establishes a session connected to ScyllaDB cluster and takes inserting tasks.

storage/scylladb_permanode_thpool.c Outdated Show resolved Hide resolved
docs/permanode.md Outdated Show resolved Hide resolved
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The listener subscribes newly confirmed transactions from IRI and adds inserting tasks into the task queue of thread pool.

The importer reads confirmed transactions from historical transaction files dumped from IRI and adds inserting tasks into the task queue of thread pool.

Each worker in the thread pool establishes a session connected to ScyllaDB cluster and takes inserting tasks.
@YingHan-Chen YingHan-Chen added A-storage Area - Storage C-feature Category - feature C-doc Category - Document labels May 21, 2020

static status_t init_importer_data(db_importer_thread_t* thread_data, db_permanode_pool_t* pool, char* file_list) {
status_t ret = SC_OK;
pthread_mutex_init(&thread_data->thread_mutex, NULL);
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Do we need error checking here?

status_t ret = SC_OK;
pthread_mutex_init(&thread_data->thread_mutex, NULL);
thread_data->pool = pool;
thread_data->file_path = strdup(file_list);
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ditto


status_t ret = SC_OK;
db_importer_thread_t* thread_data = (db_importer_thread_t*)data;
pthread_mutex_lock(&thread_data->thread_mutex);
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ditto

ta_log_error("Failed to open file %s\n", file_name_buffer);
goto exit;
}
ta_log_info("%s %s\n", "starting to import file : ", file_name_buffer);
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You will get an extra space after the colon


exit:
if (ret == SC_OK) {
ta_log_info("%s %s\n", "Successfully import file : ", thread_data->file_path);
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ditto

worker_threads = malloc(thread_num * sizeof(pthread_t));
worker_data = malloc(thread_num * sizeof(db_worker_thread_t));

db_permanode_thpool_init(&pool);
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ditto

db_permanode_thpool_init_worker(worker_data + i, &pool, db_host);
pthread_create(&worker_threads[i], NULL, db_permanode_worker_handler, (void*)&worker_data[i]);
}
init_importer_data(&importer_data, &pool, file_path);
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ditto

init_importer_data(&importer_data, &pool, file_path);
pthread_create(&importer_thread, NULL, (void*)importer_handler, (void*)&importer_data);

pthread_join(importer_thread, NULL);
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ditto

*
* @param[in] data pointer to db_permanode_pool_t
*
* @return NULL
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There is no returning NULL here

#include "scylladb_identity.h"
#include "scylladb_permanode.h"

#include "scylladb_permanode_thpool.h"
/**
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add a new line between line 15 and 16

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