Merge pull request #256 from NethermindEth/CreateSimpleExample

Create SimpleCall Example

README.md

@@ -51,29 +51,14 @@ operations on the wallets. The package has excellent documentation for a smooth
 
 ### Run Examples
 
-***starkcurve***
+***starknet simpleCall***
 
 ```sh
-cd examples/curve
+cd examples/simpleCall
 go mod tidy
 go run main.go
 ```
 
-***starknet contract***
-
-```sh
-cd examples/contract
-go mod tidy
-go run main.go
-```
-
-***starknet account***
-
-```sh
-cd examples/account
-go mod tidy
-go run main.go
-```
 
 ### RPC
 

examples/simpleCall/.env.template

@@ -0,0 +1,2 @@
+# use this variable to change the RPC base URL
+#INTEGRATION_BASE=http_insert_end_point

examples/simpleCall/ReadMe.md

@@ -0,0 +1,9 @@
+Note: To run this example, you need a mainnet endpoint.
+
+Steps to run this example on mainnet: 
+1. rename ".env.template" to ".env.mainnet"
+2. uncomment, and set INTEGRATION_BASE to the mainnet url
+3. make sure you are in the "simpleCall" directory
+4. execute "go mod tidy"
+5. execute "go run main.go"
+

examples/simpleCall/go.mod

@@ -0,0 +1,35 @@
+module account
+
+go 1.18
+
+require (
+	github.com/NethermindEth/starknet.go v0.2.1-0.20220620163912-1db2ca279608
+	github.com/ethereum/go-ethereum v1.10.26
+	github.com/joho/godotenv v1.4.0
+)
+
+replace github.com/NethermindEth/starknet.go => ../../
+
+require (
+	github.com/NethermindEth/juno v0.3.1 // indirect
+	github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6 // indirect
+	github.com/bits-and-blooms/bitset v1.7.0 // indirect
+	github.com/consensys/gnark-crypto v0.11.0 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/deckarep/golang-set v1.8.0 // indirect
+	github.com/fxamacker/cbor/v2 v2.4.0 // indirect
+	github.com/go-ole/go-ole v1.2.1 // indirect
+	github.com/go-stack/stack v1.8.0 // indirect
+	github.com/gorilla/websocket v1.4.2 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/shirou/gopsutil v3.21.4-0.20210419000835-c7a38de76ee5+incompatible // indirect
+	github.com/stretchr/testify v1.8.1 // indirect
+	github.com/test-go/testify v1.1.4 // indirect
+	github.com/tklauser/go-sysconf v0.3.5 // indirect
+	github.com/tklauser/numcpus v0.2.2 // indirect
+	github.com/x448/float16 v0.8.4 // indirect
+	golang.org/x/crypto v0.2.0 // indirect
+	golang.org/x/sys v0.3.0 // indirect
+	gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

examples/simpleCall/go.work

@@ -0,0 +1,6 @@
+go 1.18
+
+use (
+	.
+	../..
+)

examples/simpleCall/main.go

@@ -0,0 +1,51 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+
+	"github.com/NethermindEth/starknet.go/rpc"
+	"github.com/NethermindEth/starknet.go/types"
+	"github.com/NethermindEth/starknet.go/utils"
+	ethrpc "github.com/ethereum/go-ethereum/rpc"
+	"github.com/joho/godotenv"
+)
+
+var (
+	name                string = "mainnet"
+	someMainnetContract string = "0x024dE48Fb640DB135B3dc85ef0FE2789e032FbCA2fca54E58aB8dB93ca22F767"
+	contractMethod      string = "getName"
+)
+
+func main() {
+	fmt.Println("Starting simpeCall example")
+	godotenv.Load(fmt.Sprintf(".env.%s", name))
+	base := os.Getenv("INTEGRATION_BASE")
+	c, err := ethrpc.DialContext(context.Background(), base)
+	if err != nil {
+		fmt.Println("Failed to connect to the client, did you specify the url in the .env.mainnet?")
+		panic(err)
+	}
+	clientv02 := rpc.NewProvider(c)
+	fmt.Println("Established connection with the client")
+
+	contractAddress, err := utils.HexToFelt(someMainnetContract)
+	if err != nil {
+		panic(err)
+	}
+
+	// Make read contract call
+	tx := rpc.FunctionCall{
+		ContractAddress:    contractAddress,
+		EntryPointSelector: types.GetSelectorFromNameFelt(contractMethod),
+	}
+
+	fmt.Println("Making Call() request")
+	callResp, err := clientv02.Call(context.Background(), tx, rpc.BlockID{Tag: "latest"})
+	if err != nil {
+		panic(err.Error())
+	}
+
+	fmt.Println(fmt.Sprintf("Response to %s():%s ", contractMethod, callResp[0]))
+}