blockchain.h

#pragma once
 
#include "constants.h"
#include "uthash.h"
#include "base_block.h"
#include "constants.h"
#include "leveldb/c.h"
 
typedef struct BlockChain {
  unsigned char id[BLOCK_HASH_LEN];
  Block *block;
  UT_hash_handle hh;
} BlockChain;
 
BlockChain *blockchain;
unsigned char top_block_header_hash[BLOCK_HASH_LEN];
unsigned long chain_height;
 
char *blockchain_path;
leveldb_t *blockchain_db;  // Level DB Database
 
/* Initializes the global blockchain variables */
int blockchain_init_leveldb(char *db_env);
 
int destroy_blockchain();
 
int blockchain_add_leveldb(Block *block);
 
int blockchain_find_leveldb(Block **found_block, unsigned char *block_hash);
 
int blockchain_remove_leveldb(unsigned char *block_hash);
 
int blockchain_count(unsigned int *num_entries);
 
/*
Prints the entire blockchain Hashmap to stdout
 
prefix: string to put in front of all print commands used for tabbing structure
*/
void print_blockchain_hashmap(char *prefix);
void pretty_print_blockchain_hashmap();
 
int read_top_hash(unsigned char *dest);
 
int write_top_hash();
 
int delete_top_hash();
 
int read_chain();
 
int write_chain_height();
 
int delete_chain_height();