electricity billing stub; testing infrastructure

backend/dev/_local_chain.incl.sh

@@ -0,0 +1,14 @@
+# DONT run directly
+
+# settings
+
+EOS_DIR="$HOME/eos-hackathon"
+EOS_NETWORK="hackathon"
+EOS_DOCKER='docker'
+
+
+# computed - dont touch
+
+NODEOS_DATA="$EOS_DIR/nodeos"
+KEOSD_DATA="$EOS_DIR/keosd"
+

backend/dev/cleos

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+set -eu
+set -o pipefail
+
+BIN_DIR="$(cd $(dirname $0) && pwd)"
+
+. "$BIN_DIR/_local_chain.incl.sh"
+
+
+set -x
+
+$EOS_DOCKER run --rm --network "$EOS_NETWORK" \
+    eosio/eos-dev /opt/eosio/bin/cleos \
+    -u http://nodeos:8888/ \
+    --wallet-url http://keosd:8888/ \
+    "$@"

backend/dev/reset_local_chain.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+#
+#   Removes data of test single-node network
+#
+
+set -eu
+set -o pipefail
+
+BIN_DIR="$(cd $(dirname $0) && pwd)"
+
+. "$BIN_DIR/_local_chain.incl.sh"
+
+
+"$BIN_DIR/stop_local_chain.sh" &>/dev/null || true
+
+
+rm -rf "$EOS_DIR"

backend/dev/run_local_chain.sh

@@ -0,0 +1,42 @@
+#!/usr/bin/env bash
+#
+#   Starts test single-node network
+#
+
+set -eu
+set -o pipefail
+
+BIN_DIR="$(cd $(dirname $0) && pwd)"
+
+. "$BIN_DIR/_local_chain.incl.sh"
+
+
+mkdir -p "$EOS_DIR"
+mkdir -p "$NODEOS_DATA"
+mkdir -p "$KEOSD_DATA"
+
+
+set -x
+
+$EOS_DOCKER network create "$EOS_NETWORK"
+
+$EOS_DOCKER run --rm -d --network "$EOS_NETWORK" --name nodeos -v "$NODEOS_DATA":/data \
+    eosio/eos-dev /opt/eosio/bin/nodeos \
+    -d /data \
+    --http-server-address=0.0.0.0:8888 \
+    -e -p eosio --plugin eosio::chain_api_plugin --plugin eosio::history_api_plugin
+
+$EOS_DOCKER run --rm -d --network "$EOS_NETWORK" --name keosd -v "$KEOSD_DATA":/data \
+    eosio/eos-dev /opt/eosio/bin/keosd \
+    -d /data \
+    --http-server-address=0.0.0.0:8888 \
+
+set +x
+
+
+sleep 2
+
+EOS_KEY=$("$BIN_DIR/cleos" create key | perl -ne 'print $1 if /^Private key:\s+([^\s]+)/')
+
+
+echo OK

backend/dev/stop_local_chain.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+#
+#   Stops test single-node network
+#
+
+set -eu
+set -o pipefail
+
+BIN_DIR="$(cd $(dirname $0) && pwd)"
+
+. "$BIN_DIR/_local_chain.incl.sh"
+
+
+set -x
+
+
+$EOS_DOCKER stop keosd || true
+$EOS_DOCKER stop nodeos || true
+
+$EOS_DOCKER network rm "$EOS_NETWORK" || true
+
+
+set +x
+
+echo OK

backend/src/billing.hpp

@@ -12,7 +12,7 @@ using std::string;
 
 class billing {
     // @abi action
-    void bill(uint64_t device_data, account_name user2bill, string user_meta, string billing_meta) = 0;
+    virtual void bill(uint64_t device_data, account_name user2bill, string user_meta, string billing_meta) = 0;
 };
 
 

backend/src/billing_electricity.cpp

@@ -0,0 +1,53 @@
+//
+// Created by Eenae on 09.06.2018.
+//
+
+#include <eosiolib/eosio.hpp>
+#include <eosiolib/asset.hpp>
+#include <eosiolib/currency.hpp>
+
+#include <string>
+#include <sstream>
+#include <algorithm>
+#include <iterator>
+
+#include "billing.hpp"
+
+using eosio::asset;
+using eosio::const_mem_fun;
+using eosio::indexed_by;
+using std::string;
+using std::istringstream;
+
+
+class billing_electricity : /*public billing,*/ public eosio::contract {
+public:
+    billing_electricity(account_name self) :
+            contract(self) {}
+
+    // @abi action
+    void bill(uint64_t device_data, account_name user2bill, string user_meta, string billing_meta) {
+        // device_data is a number of measurements sent
+        // billing_meta: <float: watts/hour per measurement>\t<uint: payment per kWt/hour>
+
+        istringstream iss(billing_meta);
+
+        float wattPerMeasurement;
+        iss >> wattPerMeasurement;
+
+        uint64_t paymentPerKWT;
+        iss >> paymentPerKWT;
+
+        eosio::print( "wattPerMeasurement = ", wattPerMeasurement, "  paymentPerKWT = ", paymentPerKWT, "\n" );
+    }
+};
+
+EOSIO_ABI( billing_electricity, (bill) )
+
+
+int main(int argc, char **argv) {
+    billing_electricity(N("self")).bill(1U, N("foo"), string(), string("0.3125 2"));
+
+    return 0;
+}
+