Merge #10871: Handle getinfo in bitcoin-cli w/ -getinfo (revival of #8843)

5e69a43 Add test for bitcoin-cli -getinfo (John Newbery) 3826253 rpc: Handle `getinfo` locally in bitcoin-cli w/ `-getinfo` (Wladimir J. van der Laan) Pull request description: Since @laanwj doesn't want to maintain these changes anymore, I will. This PR is a revival of #8843. I have addressed @jnewbery's comments. Regarding atomicity, I don't think that is a concern here. This is explicitly a new API and those who use it will know that this is different and that it is not atomic. Tree-SHA512: 9664ed13a5557bda8c43f34d6527669a641f260b7830e592409b28c845258fc7e0fdd85dd42bfa88c103fea3ecdfede5f81e3d91870e2accba81c6d6de6b21ff
2024-12-25 20:12:57 +01:00 · 2017-09-28 08:33:12 +02:00 · 2017-09-28 08:33:12 +02:00 · f2024366d8
commit f2024366d8
parent a321e6195f
4 changed files with 150 additions and 15 deletions
--- a/src/dash-cli.cpp
+++ b/src/dash-cli.cpp
@ -39,6 +39,7 @@ std::string HelpMessageCli()
    strUsage += HelpMessageOpt("-?", _("This help message"));
    strUsage += HelpMessageOpt("-conf=<file>", strprintf(_("Specify configuration file (default: %s)"), BITCOIN_CONF_FILENAME));
    strUsage += HelpMessageOpt("-datadir=<dir>", _("Specify data directory"));
+    strUsage += HelpMessageOpt("-getinfo", _("Get general information from the remote server. Note that unlike server-side RPC calls, the results of -getinfo is the result of multiple non-atomic requests. Some entries in the result may represent results from different states (e.g. wallet balance may be as of a different block from the chain state reported)"));
    AppendParamsHelpMessages(strUsage);
    strUsage += HelpMessageOpt("-named", strprintf(_("Pass named instead of positional arguments (default: %s)"), DEFAULT_NAMED));
    strUsage += HelpMessageOpt("-rpcconnect=<ip>", strprintf(_("Send commands to node running on <ip> (default: %s)"), DEFAULT_RPCCONNECT));
@ -204,7 +205,96 @@ static void http_error_cb(enum evhttp_request_error err, void *ctx)
 }
 #endif

-static UniValue CallRPC(const std::string& strMethod, const UniValue& params)
+/** Class that handles the conversion from a command-line to a JSON-RPC request,
+ * as well as converting back to a JSON object that can be shown as result.
+ */
+class BaseRequestHandler
+{
+public:
+    virtual UniValue PrepareRequest(const std::string& method, const std::vector<std::string>& args) = 0;
+    virtual UniValue ProcessReply(const UniValue &batch_in) = 0;
+};
+
+/** Process getinfo requests */
+class GetinfoRequestHandler: public BaseRequestHandler
+{
+public:
+    const int ID_NETWORKINFO = 0;
+    const int ID_BLOCKCHAININFO = 1;
+    const int ID_WALLETINFO = 2;
+
+    /** Create a simulated `getinfo` request. */
+    UniValue PrepareRequest(const std::string& method, const std::vector<std::string>& args) override
+    {
+        UniValue result(UniValue::VARR);
+        result.push_back(JSONRPCRequestObj("getnetworkinfo", NullUniValue, ID_NETWORKINFO));
+        result.push_back(JSONRPCRequestObj("getblockchaininfo", NullUniValue, ID_BLOCKCHAININFO));
+        result.push_back(JSONRPCRequestObj("getwalletinfo", NullUniValue, ID_WALLETINFO));
+        return result;
+    }
+
+    /** Collect values from the batch and form a simulated `getinfo` reply. */
+    UniValue ProcessReply(const UniValue &batch_in) override
+    {
+        UniValue result(UniValue::VOBJ);
+        std::vector<UniValue> batch = JSONRPCProcessBatchReply(batch_in, 3);
+        // Errors in getnetworkinfo() and getblockchaininfo() are fatal, pass them on
+        // getwalletinfo() is allowed to fail in case there is no wallet.
+        if (!batch[ID_NETWORKINFO]["error"].isNull()) {
+            return batch[ID_NETWORKINFO];
+        }
+        if (!batch[ID_BLOCKCHAININFO]["error"].isNull()) {
+            return batch[ID_BLOCKCHAININFO];
+        }
+        result.pushKV("version", batch[ID_NETWORKINFO]["result"]["version"]);
+        result.pushKV("protocolversion", batch[ID_NETWORKINFO]["result"]["protocolversion"]);
+        if (!batch[ID_WALLETINFO].isNull()) {
+            result.pushKV("walletversion", batch[ID_WALLETINFO]["result"]["walletversion"]);
+            result.pushKV("balance", batch[ID_WALLETINFO]["result"]["balance"]);
+        }
+        result.pushKV("blocks", batch[ID_BLOCKCHAININFO]["result"]["blocks"]);
+        result.pushKV("timeoffset", batch[ID_NETWORKINFO]["result"]["timeoffset"]);
+        result.pushKV("connections", batch[ID_NETWORKINFO]["result"]["connections"]);
+        result.pushKV("proxy", batch[ID_NETWORKINFO]["result"]["networks"][0]["proxy"]);
+        result.pushKV("difficulty", batch[ID_BLOCKCHAININFO]["result"]["difficulty"]);
+        result.pushKV("testnet", UniValue(batch[ID_BLOCKCHAININFO]["result"]["chain"].get_str() == "test"));
+        if (!batch[ID_WALLETINFO].isNull()) {
+            result.pushKV("walletversion", batch[ID_WALLETINFO]["result"]["walletversion"]);
+            result.pushKV("balance", batch[ID_WALLETINFO]["result"]["balance"]);
+            result.pushKV("keypoololdest", batch[ID_WALLETINFO]["result"]["keypoololdest"]);
+            result.pushKV("keypoolsize", batch[ID_WALLETINFO]["result"]["keypoolsize"]);
+            if (!batch[ID_WALLETINFO]["result"]["unlocked_until"].isNull()) {
+                result.pushKV("unlocked_until", batch[ID_WALLETINFO]["result"]["unlocked_until"]);
+            }
+            result.pushKV("paytxfee", batch[ID_WALLETINFO]["result"]["paytxfee"]);
+        }
+        result.pushKV("relayfee", batch[ID_NETWORKINFO]["result"]["relayfee"]);
+        result.pushKV("warnings", batch[ID_NETWORKINFO]["result"]["warnings"]);
+        return JSONRPCReplyObj(result, NullUniValue, 1);
+    }
+};
+
+/** Process default single requests */
+class DefaultRequestHandler: public BaseRequestHandler {
+public:
+    UniValue PrepareRequest(const std::string& method, const std::vector<std::string>& args) override
+    {
+        UniValue params;
+        if(gArgs.GetBoolArg("-named", DEFAULT_NAMED)) {
+            params = RPCConvertNamedValues(method, args);
+        } else {
+            params = RPCConvertValues(method, args);
+        }
+        return JSONRPCRequestObj(method, params, 1);
+    }
+
+    UniValue ProcessReply(const UniValue &reply) override
+    {
+        return reply.get_obj();
+    }
+};
+
+static UniValue CallRPC(BaseRequestHandler *rh, const std::string& strMethod, const std::vector<std::string>& args)
 {
    std::string host;
    // In preference order, we choose the following for the port:
@ -251,7 +341,7 @@ static UniValue CallRPC(const std::string& strMethod, const UniValue& params)
    evhttp_add_header(output_headers, "Authorization", (std::string("Basic ") + EncodeBase64(strRPCUserColonPass)).c_str());

    // Attach request data
-    std::string strRequest = JSONRPCRequestObj(strMethod, params, 1).write() + "\n";
+    std::string strRequest = rh->PrepareRequest(strMethod, args).write() + "\n";
    struct evbuffer* output_buffer = evhttp_request_get_output_buffer(req.get());
    assert(output_buffer);
    evbuffer_add(output_buffer, strRequest.data(), strRequest.size());
@ -290,7 +380,7 @@ static UniValue CallRPC(const std::string& strMethod, const UniValue& params)
    UniValue valReply(UniValue::VSTR);
    if (!valReply.read(response.body))
        throw std::runtime_error("couldn't parse reply from server");
-    const UniValue& reply = valReply.get_obj();
+    const UniValue reply = rh->ProcessReply(valReply);
    if (reply.empty())
        throw std::runtime_error("expected reply to have result, error and id properties");

@ -322,24 +412,25 @@ int CommandLineRPC(int argc, char *argv[])
                args.push_back(line);
            }
        }
+        std::unique_ptr<BaseRequestHandler> rh;
+        std::string method;
+        if (gArgs.GetBoolArg("-getinfo", false)) {
+            rh.reset(new GetinfoRequestHandler());
+            method = "";
+        } else {
+            rh.reset(new DefaultRequestHandler());
            if (args.size() < 1) {
                throw std::runtime_error("too few parameters (need at least command)");
            }
-        std::string strMethod = args[0];
+            method = args[0];
            args.erase(args.begin()); // Remove trailing method name from arguments vector
-
-        UniValue params;
-        if(gArgs.GetBoolArg("-named", DEFAULT_NAMED)) {
-            params = RPCConvertNamedValues(strMethod, args);
-        } else {
-            params = RPCConvertValues(strMethod, args);
        }

        // Execute and handle connection failures with -rpcwait
        const bool fWait = gArgs.GetBoolArg("-rpcwait", false);
        do {
            try {
-                const UniValue reply = CallRPC(strMethod, params);
+                const UniValue reply = CallRPC(rh.get(), method, args);

                // Parse reply
                const UniValue& result = find_value(reply, "result");
--- a/src/rpc/protocol.cpp
+++ b/src/rpc/protocol.cpp
@ -137,3 +137,22 @@ void DeleteAuthCookie()
    }
 }

+std::vector<UniValue> JSONRPCProcessBatchReply(const UniValue &in, size_t num)
+{
+    if (!in.isArray()) {
+        throw std::runtime_error("Batch must be an array");
+    }
+    std::vector<UniValue> batch(num);
+    for (size_t i=0; i<in.size(); ++i) {
+        const UniValue &rec = in[i];
+        if (!rec.isObject()) {
+            throw std::runtime_error("Batch member must be object");
+        }
+        size_t id = rec["id"].get_int();
+        if (id >= num) {
+            throw std::runtime_error("Batch member id larger than size");
+        }
+        batch[id] = rec;
+    }
+    return batch;
+}
--- a/src/rpc/protocol.h
+++ b/src/rpc/protocol.h
@ -98,5 +98,7 @@ bool GenerateAuthCookie(std::string *cookie_out);
 bool GetAuthCookie(std::string *cookie_out);
 /** Delete RPC authentication cookie from disk */
 void DeleteAuthCookie();
+/** Parse JSON-RPC batch reply into a vector */
+std::vector<UniValue> JSONRPCProcessBatchReply(const UniValue &in, size_t num);

 #endif // BITCOIN_RPCPROTOCOL_H
--- a/test/functional/bitcoin_cli.py
+++ b/test/functional/bitcoin_cli.py
@ -35,5 +35,28 @@ class TestBitcoinCli(BitcoinTestFramework):
        assert_equal(["foo", "bar"], self.nodes[0].cli('-rpcuser=%s' % user, '-stdin', '-stdinrpcpass', input=password + "\nfoo\nbar").echo())
        assert_raises_process_error(1, "incorrect rpcuser or rpcpassword", self.nodes[0].cli('-rpcuser=%s' % user, '-stdin', '-stdinrpcpass', input="foo").echo)

+        self.log.info("Compare responses from `bitcoin-cli -getinfo` and the RPCs data is retrieved from.")
+        cli_get_info = self.nodes[0].cli('-getinfo').help()
+        wallet_info = self.nodes[0].getwalletinfo()
+        network_info = self.nodes[0].getnetworkinfo()
+        blockchain_info = self.nodes[0].getblockchaininfo()
+
+        assert_equal(cli_get_info['version'], network_info['version'])
+        assert_equal(cli_get_info['protocolversion'], network_info['protocolversion'])
+        assert_equal(cli_get_info['walletversion'], wallet_info['walletversion'])
+        assert_equal(cli_get_info['balance'], wallet_info['balance'])
+        assert_equal(cli_get_info['blocks'], blockchain_info['blocks'])
+        assert_equal(cli_get_info['timeoffset'], network_info['timeoffset'])
+        assert_equal(cli_get_info['connections'], network_info['connections'])
+        assert_equal(cli_get_info['proxy'], network_info['networks'][0]['proxy'])
+        assert_equal(cli_get_info['difficulty'], blockchain_info['difficulty'])
+        assert_equal(cli_get_info['testnet'], blockchain_info['chain'] == "test")
+        assert_equal(cli_get_info['balance'], wallet_info['balance'])
+        assert_equal(cli_get_info['keypoololdest'], wallet_info['keypoololdest'])
+        assert_equal(cli_get_info['keypoolsize'], wallet_info['keypoolsize'])
+        assert_equal(cli_get_info['paytxfee'], wallet_info['paytxfee'])
+        assert_equal(cli_get_info['relayfee'], network_info['relayfee'])
+        # unlocked_until is not tested because the wallet is not encrypted
+
 if __name__ == '__main__':
    TestBitcoinCli().main()