rest: added getTotals endpoint

spv: added totals for blockchain stats

include/dogecoin/spv.h

@@ -57,6 +57,11 @@ typedef struct dogecoin_spv_client_
     uint64_t last_block_size;
     uint64_t last_block_tx_count;
     uint64_t last_block_total_tx_size;
+    uint64_t total_num_tx;
+    uint64_t total_num_addresses;
+    uint64_t total_blockchain_size;
+    uint64_t total_num_inputs;
+    uint64_t total_num_outputs;
 
     /* callbacks */
     /* ========= */

src/rest.c

@@ -223,6 +223,16 @@ void dogecoin_http_request_cb(struct evhttp_request *req, void *arg) {
         evbuffer_add_printf(evb, "Block size: %lu\n", size);
         evbuffer_add_printf(evb, "Tx count: %lu\n", tx_count);
         evbuffer_add_printf(evb, "Total tx size: %lu\n", total_tx_size);
+    } else if (strcmp(path, "/getTotals") == 0) {
+        uint64_t num_tx = client->total_num_tx;
+        uint64_t blockchain_size = client->total_blockchain_size;
+        uint64_t num_inputs = client->total_num_inputs;
+        uint64_t num_outputs = client->total_num_outputs;
+
+        evbuffer_add_printf(evb, "Total number of transactions: %lu\n", num_tx);
+        evbuffer_add_printf(evb, "Total blockchain size: %lu\n", blockchain_size);
+        evbuffer_add_printf(evb, "Total number of inputs: %lu\n", num_inputs);
+        evbuffer_add_printf(evb, "Total number of outputs: %lu\n", num_outputs);
     } else {
         evhttp_send_error(req, HTTP_NOTFOUND, "Not Found");
         evbuffer_free(evb);

src/spv.c

@@ -586,6 +586,10 @@ void dogecoin_net_spv_post_cmd(dogecoin_node *node, dogecoin_p2p_msg_hdr *hdr, s
             client->last_block_tx_count = amount_of_txs;
             client->last_block_size = hdr->data_len;
 
+            // update totals for the client
+            client->total_num_tx += amount_of_txs;
+            client->total_blockchain_size += hdr->data_len;
+
             uint64_t total_tx_size = 0;
 
             size_t consumedlength = 0;
@@ -606,6 +610,10 @@ void dogecoin_net_spv_post_cmd(dogecoin_node *node, dogecoin_p2p_msg_hdr *hdr, s
                 deser_skip(buf, consumedlength);
                 if (client->sync_transaction) { client->sync_transaction(client->sync_transaction_ctx, tx, i, pindex); }
                 total_tx_size += consumedlength;
+
+                // update totals for the client
+                client->total_num_inputs += tx->vin->len;
+                client->total_num_outputs += tx->vout->len;
                 dogecoin_tx_free(tx);
             }
             client->last_block_total_tx_size = total_tx_size;