deploy network and contract (#395)

* deploy network and contract * update binary names * install deps * contract script * use POST req to sent tx * add github actions * fix lint * update makefile * go mod verify and tidy * define amount on gentx * gitignore * install solcjs * install tools, clean up, fix deployment * include make contract-tools * use node in actions env * fix binary path Co-authored-by: Federico Kunze <31522760+fedekunze@users.noreply.github.com> Co-authored-by: Federico Kunze <federico.kunze94@gmail.com>
2020-09-08 15:25:16 -07:00 · 2020-09-08 15:25:16 -07:00 · 5a29e808d3
commit 5a29e808d3
parent d6783707dc
8 changed files with 335 additions and 13 deletions
--- a/.github/workflows/deploy-contract.yml
+++ b/.github/workflows/deploy-contract.yml
@ -0,0 +1,38 @@
+name: Deploy Contract
+on:
+  pull_request:
+    branches:
+      - "development"
+
+jobs:
+  cleanup-runs:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: rokroskar/workflow-run-cleanup-action@master
+        env:
+          GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
+    if: "!startsWith(github.ref, 'refs/tags/') && github.ref != 'refs/heads/development'"
+
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js
+        uses: actions/setup-node@v1
+        with:
+          node-version: '12.x'
+      - name: Install dependencies
+        run: npm install
+      - uses: technote-space/get-diff-action@v3.1
+        id: git_diff
+        with:
+          SUFFIX_FILTER: |
+            .go
+            .mod
+            .sum
+            .sol
+      - name: Test contract
+        run: |
+          sudo make contract-tools
+          sudo make test-contract
+        if: "env.GIT_DIFF != ''"
--- a/.gitignore
+++ b/.gitignore
@ -54,3 +54,7 @@ dependency-graph.png
 *.aux
 *.out
 *.synctex.gz
+
+# Contracts
+*.bin
+*.abi
--- a/2
+++ b/2
@ -23,7 +23,7 @@ FROM alpine
 RUN apk add --update ca-certificates
 WORKDIR /root

-# Copy over binaries from the build-env 
+# Copy over binaries from the build-env
 COPY --from=build-env /go/src/github.com/Chainsafe/ethermint/build/ethermintd /usr/bin/ethermintd
 COPY --from=build-env /go/src/github.com/Chainsafe/ethermint/build/ethermintcli /usr/bin/ethermintcli

--- a/49
+++ b/49
@ -182,10 +182,47 @@ RUNSIM         = $(TOOLS_DESTDIR)/runsim
 runsim: $(RUNSIM)
 $(RUNSIM):
 	@echo "Installing runsim..."
-	@(cd /tmp && go get github.com/cosmos/tools/cmd/runsim@v1.0.0)
+	@(cd /tmp && ${GO_MOD} go get github.com/cosmos/tools/cmd/runsim@v1.0.0)
+
+contract-tools:
+ifeq (, $(shell which stringer))
+	@echo "Installing stringer..."
+	@go install golang.org/x/tools/cmd/stringer
+else
+	@echo "stringer already installed; skipping..."
+endif
+
+ifeq (, $(shell which go-bindata))
+	@echo "Installing go-bindata..."
+	@go install github.com/kevinburke/go-bindata/go-bindata
+else
+	@echo "go-bindata already installed; skipping..."
+endif
+
+ifeq (, $(shell which gencodec))
+	@echo "Installing gencodec..."
+	@go install github.com/fjl/gencodec
+else
+	@echo "gencodec already installed; skipping..."
+endif
+
+ifeq (, $(shell which protoc-gen-go))
+	@echo "Installing protoc-gen-go..."
+	@go install github.com/golang/protobuf/protoc-gen-go
+else
+	@echo "protoc-gen-go already installed; skipping..."
+endif
+
+ifeq (, $(shell which solcjs))
+	@echo "Installing solcjs..."
+	@apt-get install -f -y protobuf-compiler
+	@npm install -g solc@0.5.11
+else
+	@echo "solcjs already installed; skipping..."
+endif

 tools: tools-stamp
-tools-stamp: runsim
+tools-stamp: contract-tools runsim
 	# Create dummy file to satisfy dependency and avoid
 	# rebuilding when this Makefile target is hit twice
 	# in a row.
@ -217,6 +254,12 @@ test-import:
 test-rpc:
 	./scripts/integration-test-all.sh -q 1 -z 1 -s 2

+test-contract:
+	@type "npm" 2> /dev/null || (echo 'Npm does not exist. Please install node.js and npm."' && exit 1)
+	@type "solcjs" 2> /dev/null || (echo 'Solcjs does not exist. Please install solcjs using make contract-tools."' && exit 1)
+	@type "protoc" 2> /dev/null || (echo 'Failed to install protoc. Please reinstall protoc using make contract-tools.' && exit 1)
+	bash scripts/contract-test.sh
+
 test-sim-nondeterminism:
 	@echo "Running non-determinism test..."
 	@go test -mod=readonly $(SIMAPP) -run TestAppStateDeterminism -Enabled=true \
@ -249,7 +292,7 @@ test-sim-multi-seed-short: runsim
 	@echo "Running multi-seed application simulation. This may take awhile!"
 	@$(BINDIR)/runsim -Jobs=4 -SimAppPkg=$(SIMAPP) -ExitOnFail 50 10 TestFullAppSimulation

-.PHONY: test test-unit test-race test-import test-rpc
+.PHONY: test test-unit test-race test-import test-rpc test-contract

 .PHONY: test-sim-nondeterminism test-sim-custom-genesis-fast test-sim-import-export test-sim-after-import \
 	test-sim-custom-genesis-multi-seed test-sim-multi-seed-long test-sim-multi-seed-short
--- a/go.sum
+++ b/go.sum
@ -158,10 +158,6 @@ github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymF
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
-github.com/ethereum/go-ethereum v1.9.18 h1:+vzvufVD7+OfQa07IJP20Z7AGZsJaw0M6JIA/WQcqy8=
-github.com/ethereum/go-ethereum v1.9.18/go.mod h1:JSSTypSMTkGZtAdAChH2wP5dZEvPGh3nUTuDpH+hNrg=
-github.com/ethereum/go-ethereum v1.9.19 h1:c9IrhzqPKY+ZkS/YhXCO3rgNzlxsVrCYIRvrIAFmIWM=
-github.com/ethereum/go-ethereum v1.9.19/go.mod h1:JSSTypSMTkGZtAdAChH2wP5dZEvPGh3nUTuDpH+hNrg=
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@ -269,6 +265,7 @@ github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoA
 github.com/gorilla/websocket v1.4.1-0.20190629185528-ae1634f6a989/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
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+github.com/graph-gophers/graphql-go v0.0.0-20191115155744-f33e81362277 h1:E0whKxgp2ojts0FDgUA8dl62bmH0LxKanMoBr6MDTDM=
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 github.com/grpc-ecosystem/go-grpc-middleware v1.0.1-0.20190118093823-f849b5445de4/go.mod h1:FiyG127CGDf3tlThmgyCl78X/SZQqEOJBCDaAfeWzPs=
@ -319,6 +316,7 @@ github.com/huin/goupnp v1.0.0/go.mod h1:n9v9KO1tAxYH82qOn+UTIFQDmx5n1Zxd/ClZDMX7
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+github.com/influxdata/influxdb v1.2.3-0.20180221223340-01288bdb0883 h1:FSeK4fZCo8u40n2JMnyAsd6x7+SbvoOMHvQOU/n10P4=
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@ -436,6 +434,7 @@ github.com/openconfig/reference v0.0.0-20190727015836-8dfd928c9696/go.mod h1:ym2
 github.com/opentracing-contrib/go-observer v0.0.0-20170622124052-a52f23424492/go.mod h1:Ngi6UdF0k5OKD5t5wlmGhe/EDKPoUM3BXZSSfIuJbis=
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+github.com/opentracing/opentracing-go v1.1.0 h1:pWlfV3Bxv7k65HYwkikxat0+s3pV4bsqf19k25Ur8rU=
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@ -661,6 +660,7 @@ golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU
 golang.org/x/mobile v0.0.0-20190719004257-d2bd2a29d028/go.mod h1:E/iHnbuqvinMTCcRqshq8CkpyQDoeVncDDYHnLhea+o=
 golang.org/x/mod v0.0.0-20190513183733-4bf6d317e70e/go.mod h1:mXi4GBBbnImb6dmsKGUJ2LatrhH/nqhxcFungHvyanc=
 golang.org/x/mod v0.1.0/go.mod h1:0QHyrYULN0/3qlju5TqG8bIK38QM8yzMo5ekMj3DlcY=
+golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee h1:WG0RUwxtNT4qqaXX3DPA8zHFNm/D9xaBpxzHt1WcA/E=
 golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@ -696,6 +696,7 @@ golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e h1:vcxGaoTs7kV8m5Np9uUNQin4BrLOthgV7252N8V+FwY=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180823144017-11551d06cbcc/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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@ -732,6 +733,7 @@ golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
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+golang.org/x/time v0.0.0-20191024005414-555d28b269f0 h1:/5xXl8Y5W96D+TtHSlonuFqGHIWVuyCkGJLwGh9JJFs=
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@ -756,6 +758,7 @@ golang.org/x/tools v0.0.0-20191029041327-9cc4af7d6b2c/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191112195655-aa38f8e97acc/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20200103221440-774c71fcf114/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
+golang.org/x/tools v0.0.0-20200221224223-e1da425f72fd h1:hHkvGJK23seRCflePJnVa9IMv8fsuavSCWKd11kDQFs=
 golang.org/x/tools v0.0.0-20200221224223-e1da425f72fd/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
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@ -828,6 +831,7 @@ gopkg.in/jcmturner/gokrb5.v7 v7.5.0/go.mod h1:l8VISx+WGYp+Fp7KRbsiUuXTTOnxIc3Tuv
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 gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce h1:+JknDZhAj8YMt7GC73Ei8pv4MzjDUNPHgQWJdtMAaDU=
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+gopkg.in/olebedev/go-duktape.v3 v3.0.0-20200619000410-60c24ae608a6 h1:a6cXbcDDUkSBlpnkWV1bJ+vv3mOgQEltEJ2rPxroVu0=
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 gopkg.in/redis.v4 v4.2.4/go.mod h1:8KREHdypkCEojGKQcjMqAODMICIVwZAONWq8RowTITA=
 gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
--- a/init.sh
+++ b/init.sh
@ -23,18 +23,24 @@ ethermintcli keys add $KEY
 # Set moniker and chain-id for Ethermint (Moniker can be anything, chain-id must be an integer)
 ethermintd init $MONIKER --chain-id $CHAINID

+# Change parameter token denominations to aphoton
+cat $HOME/.ethermintd/config/genesis.json | jq '.app_state["staking"]["params"]["bond_denom"]="aphoton"' > $HOME/.ethermintd/config/tmp_genesis.json && mv $HOME/.ethermintd/config/tmp_genesis.json $HOME/.ethermintd/config/genesis.json
+cat $HOME/.ethermintd/config/genesis.json | jq '.app_state["crisis"]["constant_fee"]["denom"]="aphoton"' > $HOME/.ethermintd/config/tmp_genesis.json && mv $HOME/.ethermintd/config/tmp_genesis.json $HOME/.ethermintd/config/genesis.json
+cat $HOME/.ethermintd/config/genesis.json | jq '.app_state["gov"]["deposit_params"]["min_deposit"][0]["denom"]="aphoton"' > $HOME/.ethermintd/config/tmp_genesis.json && mv $HOME/.ethermintd/config/tmp_genesis.json $HOME/.ethermintd/config/genesis.json
+cat $HOME/.ethermintd/config/genesis.json | jq '.app_state["mint"]["params"]["mint_denom"]="aphoton"' > $HOME/.ethermintd/config/tmp_genesis.json && mv $HOME/.ethermintd/config/tmp_genesis.json $HOME/.ethermintd/config/genesis.json
+
+# Enable faucet
+cat $HOME/.ethermintd/config/genesis.json | jq '.app_state["faucet"]["enable_faucet"]=true' >  $HOME/.ethermintd/config/tmp_genesis.json && mv $HOME/.ethermintd/config/tmp_genesis.json $HOME/.ethermintd/config/genesis.json
+
 # Allocate genesis accounts (cosmos formatted addresses)
-ethermintd add-genesis-account $(ethermintcli keys show $KEY -a) 1000000000000000000aphoton,1000000000000000000stake
+ethermintd add-genesis-account $(ethermintcli keys show $KEY -a) 100000000000000000000aphoton

 # Sign genesis transaction
-ethermintd gentx --name $KEY --keyring-backend test
+ethermintd gentx --name $KEY --amount=1000000000000000000aphoton --keyring-backend test

 # Collect genesis tx
 ethermintd collect-gentxs

-# Enable faucet
-cat  $HOME/.ethermintd/config/genesis.json | jq '.app_state["faucet"]["enable_faucet"]=true' >  $HOME/.ethermintd/config/tmp_genesis.json && mv $HOME/.ethermintd/config/tmp_genesis.json $HOME/.ethermintd/config/genesis.json
-
 echo -e '\n\ntestnet faucet enabled'
 echo -e 'to transfer tokens to your account address use:'
 echo -e "ethermintcli tx faucet request 100aphoton --from $KEY\n"
--- a/scripts/contract-test.sh
+++ b/scripts/contract-test.sh
@ -0,0 +1,73 @@
+#!/bin/bash
+
+KEY="mykey"
+TESTKEY="test"
+CHAINID=123321
+MONIKER="localtestnet"
+
+# stop and remove existing daemon and client data and process(es)
+rm -rf $PWD/.ethermint*
+pkill -f "ethermint*"
+
+type "ethermintd" 2> /dev/null || make build-ethermint
+type "ethermintcli" 2> /dev/null || make build-ethermint
+
+$PWD/build/ethermintcli config keyring-backend test
+
+# Set up config for CLI
+$PWD/build/ethermintcli config chain-id $CHAINID
+$PWD/build/ethermintcli config output json
+$PWD/build/ethermintcli config indent true
+$PWD/build/ethermintcli config trust-node true
+
+# if $KEY exists it should be deleted
+$PWD/build/ethermintcli keys add $KEY
+
+# Set moniker and chain-id for Ethermint (Moniker can be anything, chain-id must be an integer)
+$PWD/build/ethermintd init $MONIKER --chain-id $CHAINID
+
+# Change parameter token denominations to aphoton
+cat $HOME/.ethermintd/config/genesis.json | jq '.app_state["staking"]["params"]["bond_denom"]="aphoton"' > $HOME/.ethermintd/config/tmp_genesis.json && mv $HOME/.ethermintd/config/tmp_genesis.json $HOME/.ethermintd/config/genesis.json
+cat $HOME/.ethermintd/config/genesis.json | jq '.app_state["crisis"]["constant_fee"]["denom"]="aphoton"' > $HOME/.ethermintd/config/tmp_genesis.json && mv $HOME/.ethermintd/config/tmp_genesis.json $HOME/.ethermintd/config/genesis.json
+cat $HOME/.ethermintd/config/genesis.json | jq '.app_state["gov"]["deposit_params"]["min_deposit"][0]["denom"]="aphoton"' > $HOME/.ethermintd/config/tmp_genesis.json && mv $HOME/.ethermintd/config/tmp_genesis.json $HOME/.ethermintd/config/genesis.json
+cat $HOME/.ethermintd/config/genesis.json | jq '.app_state["mint"]["params"]["mint_denom"]="aphoton"' > $HOME/.ethermintd/config/tmp_genesis.json && mv $HOME/.ethermintd/config/tmp_genesis.json $HOME/.ethermintd/config/genesis.json
+
+# Enable faucet
+cat $HOME/.ethermintd/config/genesis.json | jq '.app_state["faucet"]["enable_faucet"]=true' >  $HOME/.ethermintd/config/tmp_genesis.json && mv $HOME/.ethermintd/config/tmp_genesis.json $HOME/.ethermintd/config/genesis.json
+
+# Allocate genesis accounts (cosmos formatted addresses)
+$PWD/build/ethermintd add-genesis-account "$("$PWD"/build/ethermintcli keys show "$KEY$i" -a)" 100000000000000000000aphoton
+
+# Sign genesis transaction
+$PWD/build/ethermintd gentx --name $KEY --amount=1000000000000000000aphoton --keyring-backend test
+
+# Collect genesis tx
+$PWD/build/ethermintd collect-gentxs
+
+# Run this to ensure everything worked and that the genesis file is setup correctly
+$PWD/build/ethermintd validate-genesis
+
+# Start the node (remove the --pruning=nothing flag if historical queries are not needed) in background and log to file
+$PWD/build/ethermintd start --pruning=nothing --rpc.unsafe --log_level "main:info,state:info,mempool:info" --trace > ethermintd.log &
+
+sleep 1
+
+# Start the rest server with unlocked faucet key in background and log to file
+$PWD/build/ethermintcli rest-server --laddr "tcp://localhost:8545" --unlock-key $KEY --chain-id $CHAINID --trace > ethermintcli.log &
+
+solcjs --abi $PWD/tests-solidity/suites/basic/contracts/Counter.sol --bin -o $PWD/tests-solidity/suites/basic/counter
+mv $PWD/tests-solidity/suites/basic/counter/*.abi $PWD/tests-solidity/suites/basic/counter/counter_sol.abi
+mv $PWD/tests-solidity/suites/basic/counter/*.bin $PWD/tests-solidity/suites/basic/counter/counter_sol.bin
+
+ACCT=$(curl --fail --silent -X POST --data '{"jsonrpc":"2.0","method":"eth_accounts","params":[],"id":1}' -H "Content-Type: application/json" http://localhost:8545 | grep -o '\0x[^"]*' 2>&1)
+
+echo $ACCT
+
+curl -X POST --data '{"jsonrpc":"2.0","method":"personal_unlockAccount","params":["'$ACCT'", ""],"id":1}' -H "Content-Type: application/json" http://localhost:8545
+
+PRIVKEY="$("$PWD"/build/ethermintcli keys unsafe-export-eth-key $KEY)"
+
+echo $PRIVKEY
+
+## need to get the private key from the account in order to check this functionality.
+cd tests-solidity/suites/basic/ && go get && go run main.go $ACCT
--- a/tests-solidity/suites/basic/main.go
+++ b/tests-solidity/suites/basic/main.go
@ -0,0 +1,154 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"os"
+	"time"
+
+	"github.com/ethereum/go-ethereum/common/hexutil"
+)
+
+var (
+	HOST = os.Getenv("HOST")
+	HOME = os.Getenv("PWD")
+)
+
+type Request struct {
+	Version string      `json:"jsonrpc"`
+	Method  string      `json:"method"`
+	Params  interface{} `json:"params"`
+	ID      int         `json:"id"`
+}
+
+type RPCError struct {
+	Code    int         `json:"code"`
+	Message string      `json:"message"`
+	Data    interface{} `json:"data,omitempty"`
+}
+
+type Response struct {
+	Error  *RPCError       `json:"error"`
+	ID     int             `json:"id"`
+	Result json.RawMessage `json:"result,omitempty"`
+}
+
+func createRequest(method string, params interface{}) Request {
+	return Request{
+		Version: "2.0",
+		Method:  method,
+		Params:  params,
+		ID:      1,
+	}
+}
+
+func getTransactionReceipt(hash hexutil.Bytes) (map[string]interface{}, error) {
+	param := []string{hash.String()}
+	rpcRes, err := call("eth_getTransactionReceipt", param)
+	if err != nil {
+		return nil, err
+	}
+
+	receipt := make(map[string]interface{})
+	err = json.Unmarshal(rpcRes.Result, &receipt)
+	if err != nil {
+		return nil, err
+	}
+
+	return receipt, nil
+}
+
+func waitForReceipt(hash hexutil.Bytes) (map[string]interface{}, error) {
+	for i := 0; i < 10; i++ {
+		receipt, err := getTransactionReceipt(hash)
+		if receipt != nil {
+			return receipt, err
+		} else if err != nil {
+			return nil, err
+		}
+
+		time.Sleep(time.Second)
+	}
+	return nil, errors.New("cound not find transaction on chain")
+}
+
+func call(method string, params interface{}) (*Response, error) {
+	if HOST == "" {
+		HOST = "http://localhost:8545"
+	}
+
+	req, err := json.Marshal(createRequest(method, params))
+	if err != nil {
+		return nil, err
+	}
+
+	var rpcRes *Response
+	time.Sleep(1000000 * time.Nanosecond)
+	/* #nosec */
+	res, err := http.Post(HOST, "application/json", bytes.NewBuffer(req))
+	if err != nil {
+		return nil, err
+	}
+
+	decoder := json.NewDecoder(res.Body)
+	rpcRes = new(Response)
+	err = decoder.Decode(&rpcRes)
+	if err != nil {
+		return nil, err
+	}
+
+	err = res.Body.Close()
+	if err != nil {
+		return nil, err
+	}
+
+	return rpcRes, nil
+}
+
+func main() {
+	dat, err := ioutil.ReadFile(HOME + "/counter/counter_sol.bin")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	param := make([]map[string]string, 1)
+	param[0] = make(map[string]string)
+	param[0]["from"] = os.Args[1]
+	param[0]["data"] = "0x" + string(dat)
+
+	txRPCRes, err := call("eth_sendTransaction", param)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	var hash hexutil.Bytes
+	err = json.Unmarshal(txRPCRes.Result, &hash)
+	if err != nil {
+		log.Fatal(err)
+	}
+	fmt.Println("Contract TX hash: ", hash)
+
+	receipt, err := waitForReceipt(hash)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	/*
+		//test for bad hash
+		testhash, err := hexutil.Decode("0xe146d95c74a48e730bf825c2a3dcbce8122b8a463bc15bcbb38b9c195402f0a5")
+		if err != nil {
+			log.Fatal(err)
+		}
+		receipt, err := waitForReceipt(testhash)
+		if err != nil {
+			log.Fatal(err)
+		}
+	*/
+
+	fmt.Println("receipt: ", receipt)
+}