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onion-wownero-blockchain-explorer
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index2() added

This commit is contained in:
moneroexamples 2016-05-01 10:02:37 +08:00
parent 245471d418
commit 6d84e1e7a5
3 changed files with 153 additions and 4 deletions
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11
src/MicroCore.cpp
View File

@ -32,10 +32,12 @@ namespace xmreg
* Initialize m_blockchain_storage with the BlockchainLMDB object.
*/
bool
MicroCore::init(const string& blockchain_path)
MicroCore::init(const string& _blockchain_path)
{
int db_flags = 0;
blockchain_path = _blockchain_path;
//db_flags |= MDB_RDONLY;
//db_flags |= MDB_NOLOCK;
//db_flags |= MDB_SYNC;
@ -45,7 +47,7 @@ namespace xmreg
db_flags = DEFAULT_FLAGS;
BlockchainDB* db = nullptr;
db = new BlockchainLMDB();
db = new BlockchainLMDB();
try
{
@ -322,5 +324,10 @@ namespace xmreg
return true;
}
string
MicroCore::get_blkchain_path()
{
return blockchain_path;
}
}

7
src/MicroCore.h
View File

@ -28,6 +28,8 @@ namespace xmreg
*/
class MicroCore {
string blockchain_path;
tx_memory_pool m_mempool;
Blockchain m_blockchain_storage;
@ -35,7 +37,7 @@ namespace xmreg
MicroCore();
bool
init(const string& blockchain_path);
init(const string& _blockchain_path);
Blockchain&
get_core();
@ -64,6 +66,9 @@ namespace xmreg
uint64_t
get_blk_timestamp(uint64_t blk_height);
string
get_blkchain_path();
virtual ~MicroCore();
};

139
src/page.h
View File

@ -27,6 +27,7 @@
#define TMPL_DIR "./templates"
#define TMPL_PARIALS_DIR TMPL_DIR "/partials"
#define TMPL_INDEX TMPL_DIR "/index.html"
#define TMPL_INDEX2 TMPL_DIR "/index2.html"
#define TMPL_MEMPOOL TMPL_DIR "/mempool.html"
#define TMPL_HEADER TMPL_DIR "/header.html"
#define TMPL_FOOTER TMPL_DIR "/footer.html"
@ -194,6 +195,13 @@ namespace xmreg {
}
/**
* @brief Show recent blocks and mempool
* @param page_no block page to show
* @param refresh_page enable autorefresh
* @return rendered index page
*/
string
index(uint64_t page_no = 0, bool refresh_page = false)
{
@ -377,6 +385,135 @@ namespace xmreg {
}
/**
* @brief show recent transactions and mempool
* @param page_no block page to show
* @param refresh_page enable autorefresh
* @return rendered index page
*/
string
index2(uint64_t page_no = 0, bool refresh_page = false)
{
//get current server timestamp
server_timestamp = std::time(nullptr);
// number of last blocks to show
uint64_t no_of_last_blocks {20 + 1};
// get the current blockchain height. Just to check
uint64_t height =
xmreg::MyLMDB::get_blockchain_height(mcore->get_blkchain_path());
// initalise page tempate map with basic info about blockchain
mstch::map context {
{"refresh" , refresh_page},
{"height" , std::to_string(height)},
{"server_timestamp", xmreg::timestamp_to_str(server_timestamp)},
{"age_format" , string("[h:m:d]")},
{"page_no" , std::to_string(page_no)},
{"total_page_no" , std::to_string(height / (no_of_last_blocks))},
{"is_page_zero" , !bool(page_no)},
{"next_page" , std::to_string(page_no + 1)},
{"prev_page" , std::to_string((page_no > 0 ? page_no - 1 : 0))},
{"txs" , mstch::array()}, // will keep tx to show
};
// get reference to txs mstch map to be field below
mstch::array& txs = boost::get<mstch::array>(context["txs"]);
// calculate starting and ending block numbers to show
uint64_t start_height = height - no_of_last_blocks * (page_no + 1);
uint64_t end_height = height - no_of_last_blocks * (page_no);
// previous blk timestamp, initalised to lowest possible value
double prev_blk_timestamp {std::numeric_limits<double>::lowest()};
// iterate over last no_of_last_blocks of blocks
for (uint64_t i = start_height; i <= end_height; ++i)
{
// get block at the given height i
block blk;
if (!mcore->get_block_by_height(i, blk))
{
cerr << "Cant get block: " << i << endl;
continue;
}
// get block age
pair<string, string> age = get_age(server_timestamp, blk.timestamp);
context["age_format"] = age.second;
// get time difference [m] between previous and current blocks
string time_delta_str {};
if (prev_blk_timestamp > std::numeric_limits<double>::lowest())
{
time_delta_str = fmt::format("{:0.2f}",
(double(blk.timestamp) - double(prev_blk_timestamp))/60.0);
}
// get all transactions in the block found
// initialize the first list with transaction for solving
// the block i.e. coinbase.
list<cryptonote::transaction> blk_txs {blk.miner_tx};
list<crypto::hash> missed_txs;
if (!core_storage->get_transactions(blk.tx_hashes, blk_txs, missed_txs))
{
cerr << "Cant get transactions in block: " << i << endl;
continue;
}
for (const cryptonote::transaction& tx : blk_txs)
{
tx_details txd = get_tx_details(tx);
mstch::map txd_map = txd.get_mstch_map();
//add age to the txd mstch map
txd_map.insert({"time_delta", time_delta_str});
txd_map.insert({"age" , age.first});
txs.push_back(txd_map);
}
} // for (uint64_t i = start_height; i <= end_height; ++i)
// reverse txs and remove last (i.e., oldest)
// tx. This is done so that time delats
// are easier to calcualte in the above for loop
std::reverse(txs.begin(), txs.end());
// if we look at the genesis time, we should not remove
// the last block, i.e. genesis one.
if (!(start_height < 2))
{
txs.pop_back();
}
// get memory pool rendered template
string mempool_html = mempool();
// append mempool_html to the index context map
context["mempool_info"] = mempool_html;
// read index.html
string index_html = xmreg::read(TMPL_INDEX2);
// add header and footer
string full_page = get_full_page(index_html);
// render the page
return mstch::render(full_page, context);
}
string
mempool()
{
@ -550,7 +687,7 @@ namespace xmreg {
// timescale representation for each tx in the block
vector<string> mixin_timescales_str;
// for each transaction in the memory pool
// for each transaction in the block
for (size_t i = 0; i < blk.tx_hashes.size(); ++i)
{
// get transaction info of the tx in the mempool