[feature] hyperledger-iroha#2899: Add multi-instructions subcommand into

Signed-off-by: Vladimir Pesterev <pesterev@pm.me>

client_cli/multi-instr-example.json

@@ -0,0 +1,50 @@
+[
+    {
+        "Register": {
+            "Identifiable": {
+                "NewDomain": {
+                    "id": "neverland",
+                    "logo": null,
+                    "metadata": {}
+                }
+            }
+        }
+    },
+    {
+        "Register": {
+            "Identifiable": {
+                "NewAccount": {
+                    "id": "steve@neverland",
+                    "signatories": [
+                        "ed0120cc25624d62896d3a0bfd8940f928dc2abf27cc57cefeb442aa96d9081aae58a1"
+                    ],
+                    "metadata": {}
+                }
+            }
+        }
+    },
+    {
+        "Register": {
+            "Identifiable": {
+                "NewAssetDefinition": {
+                    "id": "sapporo#neverland",
+                    "value_type": "Quantity",
+                    "mintable": "Infinitely",
+                    "metadata": {}
+                }
+            }
+        }
+    },
+    {
+        "Mint": {
+            "object": {
+                "U32": 1010
+            },
+            "destination_id": {
+                "Id": {
+                    "AssetId": "sapporo##steve@neverland"
+                }
+            }
+        }
+    }
+]

client_cli/src/main.rs

@@ -106,6 +106,8 @@ pub enum Subcommand {
     Wasm(wasm::Args),
     /// The subcommand related to block streaming
     Blocks(blocks::Args),
+    /// The subcommand related to multi-instructions as Json
+    Json(json::Args),
 }
 
 /// Runs subcommand
@@ -128,7 +130,7 @@ macro_rules! match_run_all {
 impl RunArgs for Subcommand {
     fn run(self, cfg: &ClientConfiguration) -> Result<()> {
         use Subcommand::*;
-        match_run_all!((self, cfg), { Domain, Account, Asset, Peer, Events, Wasm, Blocks })
+        match_run_all!((self, cfg), { Domain, Account, Asset, Peer, Events, Wasm, Blocks, Json })
     }
 }
 
@@ -854,3 +856,21 @@ mod wasm {
         }
     }
 }
+
+mod json {
+    use std::io::BufReader;
+
+    use super::*;
+
+    /// Subcommand for submitting multi-instructions
+    #[derive(Debug, StructOpt)]
+    pub struct Args;
+
+    impl RunArgs for Args {
+        fn run(self, cfg: &ClientConfiguration) -> Result<()> {
+            let reader = BufReader::new(stdin());
+            let instructions: Vec<Instruction> = serde_json::from_reader(reader)?;
+            submit(instructions, cfg, UnlimitedMetadata::new()).wrap_err("Failed to submit parsed instructions")
+        }
+    }
+}