cgore · rhishikeshj · Jun 11, 2021
diff --git a/project.clj b/project.clj
@@ -5,8 +5,11 @@
             :url "https://www.eclipse.org/legal/epl-2.0/"}
   :dependencies [[org.clojure/clojure "1.10.0"]
                  [org.web3j/core      "4.8.4"]
-                 [org.web3j/web3j-evm "4.8.4"]]
+                 [org.web3j/web3j-evm "4.8.4"]
+                 [org.web3j/codegen "4.8.4"]
+                 [org.web3j/web3j-sokt "0.2.1"]]
   :repositories [["jcenter" {:url "https://jcenter.bintray.com/"}]
                  ["releases" {:url "https://repo.clojars.org"
                               :creds :gpg}]]
-  :repl-options {:init-ns web3clj.core})
+  :repl-options {:init-ns web3clj.core}
+  :java-source-paths ["src/java"])
diff --git a/resources/contracts/Inbox.sol b/resources/contracts/Inbox.sol
@@ -0,0 +1,22 @@
+// compiler version pinning
+pragma solidity ^0.4.17;
+
+// define a new contract
+contract Inbox {
+    // storage variable which is stored on the blockchain
+    string public message;
+
+    // constructor, invoked when we deploy contract to blockchain
+    function Inbox(string newMessage) public {
+        message = newMessage;
+    }
+
+    function setMessage(string newMessage) public {
+        message = newMessage;
+    }
+
+    // function-name() function-type return-type
+    function getMessage() public view returns (string) {
+        return message;
+    }
+}
diff --git a/src/java/web3clj/solc/Inbox.java b/src/java/web3clj/solc/Inbox.java
@@ -0,0 +1,118 @@
+package web3clj.solc;
+
+import java.math.BigInteger;
+import java.util.Arrays;
+import java.util.Collections;
+import org.web3j.abi.FunctionEncoder;
+import org.web3j.abi.TypeReference;
+import org.web3j.abi.datatypes.Function;
+import org.web3j.abi.datatypes.Type;
+import org.web3j.abi.datatypes.Utf8String;
+import org.web3j.crypto.Credentials;
+import org.web3j.protocol.Web3j;
+import org.web3j.protocol.core.RemoteCall;
+import org.web3j.protocol.core.RemoteFunctionCall;
+import org.web3j.protocol.core.methods.response.TransactionReceipt;
+import org.web3j.tx.Contract;
+import org.web3j.tx.TransactionManager;
+import org.web3j.tx.gas.ContractGasProvider;
+
+/**
+ * <p>Auto generated code.
+ * <p><strong>Do not modify!</strong>
+ * <p>Please use the <a href="https://docs.web3j.io/command_line.html">web3j command line tools</a>,
+ * or the org.web3j.codegen.SolidityFunctionWrapperGenerator in the 
+ * <a href="https://github.com/web3j/web3j/tree/master/codegen">codegen module</a> to update.
+ *
+ * <p>Generated with web3j version 4.8.4.
+ */
+@SuppressWarnings("rawtypes")
+public class Inbox extends Contract {
+    public static final String BINARY = "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";
+
+    public static final String FUNC_SETMESSAGE = "setMessage";
+
+    public static final String FUNC_GETMESSAGE = "getMessage";
+
+    public static final String FUNC_MESSAGE = "message";
+
+    @Deprecated
+    protected Inbox(String contractAddress, Web3j web3j, Credentials credentials, BigInteger gasPrice, BigInteger gasLimit) {
+        super(BINARY, contractAddress, web3j, credentials, gasPrice, gasLimit);
+    }
+
+    protected Inbox(String contractAddress, Web3j web3j, Credentials credentials, ContractGasProvider contractGasProvider) {
+        super(BINARY, contractAddress, web3j, credentials, contractGasProvider);
+    }
+
+    @Deprecated
+    protected Inbox(String contractAddress, Web3j web3j, TransactionManager transactionManager, BigInteger gasPrice, BigInteger gasLimit) {
+        super(BINARY, contractAddress, web3j, transactionManager, gasPrice, gasLimit);
+    }
+
+    protected Inbox(String contractAddress, Web3j web3j, TransactionManager transactionManager, ContractGasProvider contractGasProvider) {
+        super(BINARY, contractAddress, web3j, transactionManager, contractGasProvider);
+    }
+
+    public RemoteFunctionCall<TransactionReceipt> setMessage(String newMessage) {
+        final Function function = new Function(
+                FUNC_SETMESSAGE, 
+                Arrays.<Type>asList(new org.web3j.abi.datatypes.Utf8String(newMessage)), 
+                Collections.<TypeReference<?>>emptyList());
+        return executeRemoteCallTransaction(function);
+    }
+
+    public RemoteFunctionCall<String> getMessage() {
+        final Function function = new Function(FUNC_GETMESSAGE, 
+                Arrays.<Type>asList(), 
+                Arrays.<TypeReference<?>>asList(new TypeReference<Utf8String>() {}));
+        return executeRemoteCallSingleValueReturn(function, String.class);
+    }
+
+    public RemoteFunctionCall<String> message() {
+        final Function function = new Function(FUNC_MESSAGE, 
+                Arrays.<Type>asList(), 
+                Arrays.<TypeReference<?>>asList(new TypeReference<Utf8String>() {}));
+        return executeRemoteCallSingleValueReturn(function, String.class);
+    }
+
+    @Deprecated
+    public static Inbox load(String contractAddress, Web3j web3j, Credentials credentials, BigInteger gasPrice, BigInteger gasLimit) {
+        return new Inbox(contractAddress, web3j, credentials, gasPrice, gasLimit);
+    }
+
+    @Deprecated
+    public static Inbox load(String contractAddress, Web3j web3j, TransactionManager transactionManager, BigInteger gasPrice, BigInteger gasLimit) {
+        return new Inbox(contractAddress, web3j, transactionManager, gasPrice, gasLimit);
+    }
+
+    public static Inbox load(String contractAddress, Web3j web3j, Credentials credentials, ContractGasProvider contractGasProvider) {
+        return new Inbox(contractAddress, web3j, credentials, contractGasProvider);
+    }
+
+    public static Inbox load(String contractAddress, Web3j web3j, TransactionManager transactionManager, ContractGasProvider contractGasProvider) {
+        return new Inbox(contractAddress, web3j, transactionManager, contractGasProvider);
+    }
+
+    public static RemoteCall<Inbox> deploy(Web3j web3j, Credentials credentials, ContractGasProvider contractGasProvider, String newMessage) {
+        String encodedConstructor = FunctionEncoder.encodeConstructor(Arrays.<Type>asList(new org.web3j.abi.datatypes.Utf8String(newMessage)));
+        return deployRemoteCall(Inbox.class, web3j, credentials, contractGasProvider, BINARY, encodedConstructor);
+    }
+
+    public static RemoteCall<Inbox> deploy(Web3j web3j, TransactionManager transactionManager, ContractGasProvider contractGasProvider, String newMessage) {
+        String encodedConstructor = FunctionEncoder.encodeConstructor(Arrays.<Type>asList(new org.web3j.abi.datatypes.Utf8String(newMessage)));
+        return deployRemoteCall(Inbox.class, web3j, transactionManager, contractGasProvider, BINARY, encodedConstructor);
+    }
+
+    @Deprecated
+    public static RemoteCall<Inbox> deploy(Web3j web3j, Credentials credentials, BigInteger gasPrice, BigInteger gasLimit, String newMessage) {
+        String encodedConstructor = FunctionEncoder.encodeConstructor(Arrays.<Type>asList(new org.web3j.abi.datatypes.Utf8String(newMessage)));
+        return deployRemoteCall(Inbox.class, web3j, credentials, gasPrice, gasLimit, BINARY, encodedConstructor);
+    }
+
+    @Deprecated
+    public static RemoteCall<Inbox> deploy(Web3j web3j, TransactionManager transactionManager, BigInteger gasPrice, BigInteger gasLimit, String newMessage) {
+        String encodedConstructor = FunctionEncoder.encodeConstructor(Arrays.<Type>asList(new org.web3j.abi.datatypes.Utf8String(newMessage)));
+        return deployRemoteCall(Inbox.class, web3j, transactionManager, gasPrice, gasLimit, BINARY, encodedConstructor);
+    }
+}
diff --git a/src/web3clj/solc.clj b/src/web3clj/solc.clj
@@ -0,0 +1,119 @@
+(ns web3clj.solc
+  (:require
+    [clojure.java.io :as io]
+    [web3clj.core :as w3cljc]
+    [web3clj.crypto :as w3cljcrypto]
+    [web3clj.evm :as w3cljevm]
+    [web3clj.protocol :as w3cljproto]
+    [web3clj.utils :as wu]
+    [web3clj.utils.numeric :as wun])
+  (:import
+    org.web3j.codegen.SolidityFunctionWrapperGenerator
+    (org.web3j.crypto
+      Credentials
+      WalletUtils)
+    (org.web3j.protocol
+      Web3j
+      Web3jService)
+    org.web3j.protocol.http.HttpService
+    (org.web3j.sokt
+      MainKt
+      SolcArguments
+      SolcInstance
+      SolcOutput
+      SolidityFile)))
+
+
+(defn compile-contract
+  "Compile a given contract from a file and
+  return compiled information. Shape of returned
+  data :
+  {:abi <compiled-abi>
+   :bytecode <compiled-bytecode>
+   :ast <compiled-ast>}"
+  [file contract & {out :out solc-args :solc-args
+                    :or {out "/tmp"
+                         solc-args [SolcArguments/AST
+                                    SolcArguments/BIN
+                                    SolcArguments/ABI
+                                    SolcArguments/OVERWRITE
+                                    (.param (SolcArguments/OUTPUT_DIR)
+                                            (wu/func0 out))]}}]
+  (let [sol-file (SolidityFile. file)
+        solc (.getCompilerInstance sol-file ".web3j" false)
+        solc-args (into-array SolcArguments solc-args)]
+    (when (= 0 (.getExitCode (.execute solc solc-args)))
+      {:abi (slurp (str out "/" contract ".abi"))
+       :bytecode (slurp (str out "/" contract ".bin"))
+       :ast (slurp (str out "/" contract ".sol.ast"))})))
+
+
+(defn generate-solidity-wrappers
+  "Generate java wrappers from compiled solidity contract files.
+  Alternatively you can use the ~web3j generate solidity~ cli tool
+  Note: this does not seem to work with codegen 5.0.0, works with 4.8.4!"
+  [^String bytecode-file
+   ^String abi-file
+   ^String java-src-path
+   contract-name
+   package-name]
+  (let [gen-wrapper (SolidityFunctionWrapperGenerator. (io/file bytecode-file)
+                                                       (io/file abi-file)
+                                                       (io/file java-src-path)
+                                                       contract-name
+                                                       package-name
+                                                       true ; useJavaNativeTypes
+                                                       true ; useJavaPrimitiveTypes
+                                                       20)]   ; address length in bytes, default is 20
+
+    (.generate gen-wrapper)))
+
+
+(defn create-compiled-contract
+  "Compile solidity contract and spit it out to
+  files
+  Returns: dictionary with :abi and :bytecode keys"
+  [file contract-name out-path]
+  (let [{:keys [abi bytecode] :as out} (compile-contract file contract-name :out out-path)
+        file-name (str out-path "/" contract-name)]
+    (io/make-parents file-name)
+    (spit (str file-name ".abi") abi)
+    (spit (str file-name ".bytecode") bytecode)
+    out))
+
+
+(comment
+  (let [{:keys [abi bytecode]} (create-compiled-contract "resources/contracts/Inbox.sol"
+                                                         "Inbox"
+                                                         "resources/out")]
+    (println "ABI is " abi))
+  (generate-solidity-wrappers "resources/out/Inbox.bytecode"
+                              "resources/out/Inbox.abi"
+                              "src/java"
+                              "Inbox"
+                              "web3clj.solc")
+  ;; At this point you will need to restart the repl for it
+  ;; to load this namespace.
+
+  (import web3clj.solc.Inbox)
+
+  ;; Deploy a smart contract
+  (def web3-ganache (Web3j/build (HttpService. "http://localhost:7545")))
+  ;; These credentials determine the author of the contract deployment
+  (def pr-key "8b246c57e1eb7ccec7705ce7889144292c37e02bec747da104b8981fdfb9fcfe")
+  (def local-wallet (Credentials/create pr-key))
+
+  (def inbox-contract (.send (Inbox/deploy web3-ganache
+                                           local-wallet
+                                           ;; this comes from the ganache settings
+                                           (wun/->big-integer 20000000000)
+                                           ;; eventually we required 302737 of gas
+                                           (wun/->big-integer 2000000)
+                                           "hello world")))
+
+  ;; get the message from contract
+  (def contract-message (.send (.getMessage inbox-contract)))
+
+  ;; update the message
+  ;; who decides the gas price and gas limit on these transactions?
+  (.send (.setMessage inbox-contract "bye for now")))
diff --git a/src/web3clj/utils.clj b/src/web3clj/utils.clj
@@ -1,6 +1,7 @@
 (ns web3clj.utils
   (:import [java.math BigDecimal]
-           [org.web3j.utils Convert Convert$Unit]))
+           [org.web3j.utils Convert Convert$Unit]
+           (kotlin.jvm.functions Function0)))
 
 (def WEI    Convert$Unit/WEI)
 (def KWEI   Convert$Unit/KWEI)
@@ -54,3 +55,12 @@
 (defn wei->kether [kether-amount] (<-wei kether-amount KETHER))
 (defn wei->mether [mether-amount] (<-wei mether-amount METHER))
 (defn wei->gether [gether-amount] (<-wei gether-amount GETHER))
+
+
+(defn func0
+  "A wrapper around the Function0 interface"
+  [s]
+  (reify Function0
+    (invoke
+        [this]
+      s)))