add more examples into project

333f0a1a · 志宏蔡 · d8a92ef9 · 333f0a1a · 333f0a1a · 333f0a1a
Commit 333f0a1a authored 2 years ago by 志宏蔡
11 changed files
--- a/asset/Cargo.toml
+++ b/asset/Cargo.toml
+[package]
+name = "asset"
+version = "0.1.0"
+authors = ["chainmaker"]
+edition = "2021"
+
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+[dependencies]
+contract_sdk_rust = { git = "https://git.code.tencent.com/ChainMaker/contract-sdk-rust.git", branch="v2.3.0_qc" }
+
+[profile.release]
+# Tell `rustc` to optimize for small code size.
+opt-level = "s"
--- a/asset/LICENSE_APACHE
+++ b/asset/LICENSE_APACHE
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+   "License" shall mean the terms and conditions for use, reproduction,
+   and distribution as defined by Sections 1 through 9 of this document.
+
+   "Licensor" shall mean the copyright owner or entity authorized by
+   the copyright owner that is granting the License.
+
+   "Legal Entity" shall mean the union of the acting entity and all
+   other entities that control, are controlled by, or are under common
+   control with that entity. For the purposes of this definition,
+   "control" means (i) the power, direct or indirect, to cause the
+   direction or management of such entity, whether by contract or
+   otherwise, or (ii) ownership of fifty percent (50%) or more of the
+   outstanding shares, or (iii) beneficial ownership of such entity.
+
+   "You" (or "Your") shall mean an individual or Legal Entity
+   exercising permissions granted by this License.
+
+   "Source" form shall mean the preferred form for making modifications,
+   including but not limited to software source code, documentation
+   source, and configuration files.
+
+   "Object" form shall mean any form resulting from mechanical
+   transformation or translation of a Source form, including but
+   not limited to compiled object code, generated documentation,
+   and conversions to other media types.
+
+   "Work" shall mean the work of authorship, whether in Source or
+   Object form, made available under the License, as indicated by a
+   copyright notice that is included in or attached to the work
+   (an example is provided in the Appendix below).
+
+   "Derivative Works" shall mean any work, whether in Source or Object
+   form, that is based on (or derived from) the Work and for which the
+   editorial revisions, annotations, elaborations, or other modifications
+   represent, as a whole, an original work of authorship. For the purposes
+   of this License, Derivative Works shall not include works that remain
+   separable from, or merely link (or bind by name) to the interfaces of,
+   the Work and Derivative Works thereof.
+
+   "Contribution" shall mean any work of authorship, including
+   the original version of the Work and any modifications or additions
+   to that Work or Derivative Works thereof, that is intentionally
+   submitted to Licensor for inclusion in the Work by the copyright owner
+   or by an individual or Legal Entity authorized to submit on behalf of
+   the copyright owner. For the purposes of this definition, "submitted"
+   means any form of electronic, verbal, or written communication sent
+   to the Licensor or its representatives, including but not limited to
+   communication on electronic mailing lists, source code control systems,
+   and issue tracking systems that are managed by, or on behalf of, the
+   Licensor for the purpose of discussing and improving the Work, but
+   excluding communication that is conspicuously marked or otherwise
+   designated in writing by the copyright owner as "Not a Contribution."
+
+   "Contributor" shall mean Licensor and any individual or Legal Entity
+   on behalf of whom a Contribution has been received by Licensor and
+   subsequently incorporated within the Work.
+
+2. Grant of Copyright License. Subject to the terms and conditions of
+   this License, each Contributor hereby grants to You a perpetual,
+   worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+   copyright license to reproduce, prepare Derivative Works of,
+   publicly display, publicly perform, sublicense, and distribute the
+   Work and such Derivative Works in Source or Object form.
+
+3. Grant of Patent License. Subject to the terms and conditions of
+   this License, each Contributor hereby grants to You a perpetual,
+   worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+   (except as stated in this section) patent license to make, have made,
+   use, offer to sell, sell, import, and otherwise transfer the Work,
+   where such license applies only to those patent claims licensable
+   by such Contributor that are necessarily infringed by their
+   Contribution(s) alone or by combination of their Contribution(s)
+   with the Work to which such Contribution(s) was submitted. If You
+   institute patent litigation against any entity (including a
+   cross-claim or counterclaim in a lawsuit) alleging that the Work
+   or a Contribution incorporated within the Work constitutes direct
+   or contributory patent infringement, then any patent licenses
+   granted to You under this License for that Work shall terminate
+   as of the date such litigation is filed.
+
+4. Redistribution. You may reproduce and distribute copies of the
+   Work or Derivative Works thereof in any medium, with or without
+   modifications, and in Source or Object form, provided that You
+   meet the following conditions:
+
+   (a) You must give any other recipients of the Work or
+       Derivative Works a copy of this License; and
+
+   (b) You must cause any modified files to carry prominent notices
+       stating that You changed the files; and
+
+   (c) You must retain, in the Source form of any Derivative Works
+       that You distribute, all copyright, patent, trademark, and
+       attribution notices from the Source form of the Work,
+       excluding those notices that do not pertain to any part of
+       the Derivative Works; and
+
+   (d) If the Work includes a "NOTICE" text file as part of its
+       distribution, then any Derivative Works that You distribute must
+       include a readable copy of the attribution notices contained
+       within such NOTICE file, excluding those notices that do not
+       pertain to any part of the Derivative Works, in at least one
+       of the following places: within a NOTICE text file distributed
+       as part of the Derivative Works; within the Source form or
+       documentation, if provided along with the Derivative Works; or,
+       within a display generated by the Derivative Works, if and
+       wherever such third-party notices normally appear. The contents
+       of the NOTICE file are for informational purposes only and
+       do not modify the License. You may add Your own attribution
+       notices within Derivative Works that You distribute, alongside
+       or as an addendum to the NOTICE text from the Work, provided
+       that such additional attribution notices cannot be construed
+       as modifying the License.
+
+   You may add Your own copyright statement to Your modifications and
+   may provide additional or different license terms and conditions
+   for use, reproduction, or distribution of Your modifications, or
+   for any such Derivative Works as a whole, provided Your use,
+   reproduction, and distribution of the Work otherwise complies with
+   the conditions stated in this License.
+
+5. Submission of Contributions. Unless You explicitly state otherwise,
+   any Contribution intentionally submitted for inclusion in the Work
+   by You to the Licensor shall be under the terms and conditions of
+   this License, without any additional terms or conditions.
+   Notwithstanding the above, nothing herein shall supersede or modify
+   the terms of any separate license agreement you may have executed
+   with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade
+   names, trademarks, service marks, or product names of the Licensor,
+   except as required for reasonable and customary use in describing the
+   origin of the Work and reproducing the content of the NOTICE file.
+
+7. Disclaimer of Warranty. Unless required by applicable law or
+   agreed to in writing, Licensor provides the Work (and each
+   Contributor provides its Contributions) on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+   implied, including, without limitation, any warranties or conditions
+   of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+   PARTICULAR PURPOSE. You are solely responsible for determining the
+   appropriateness of using or redistributing the Work and assume any
+   risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory,
+   whether in tort (including negligence), contract, or otherwise,
+   unless required by applicable law (such as deliberate and grossly
+   negligent acts) or agreed to in writing, shall any Contributor be
+   liable to You for damages, including any direct, indirect, special,
+   incidental, or consequential damages of any character arising as a
+   result of this License or out of the use or inability to use the
+   Work (including but not limited to damages for loss of goodwill,
+   work stoppage, computer failure or malfunction, or any and all
+   other commercial damages or losses), even if such Contributor
+   has been advised of the possibility of such damages.
+
+9. Accepting Warranty or Additional Liability. While redistributing
+   the Work or Derivative Works thereof, You may choose to offer,
+   and charge a fee for, acceptance of support, warranty, indemnity,
+   or other liability obligations and/or rights consistent with this
+   License. However, in accepting such obligations, You may act only
+   on Your own behalf and on Your sole responsibility, not on behalf
+   of any other Contributor, and only if You agree to indemnify,
+   defend, and hold each Contributor harmless for any liability
+   incurred by, or claims asserted against, such Contributor by reason
+   of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
--- a/asset/README.md
+++ b/asset/README.md
+## 编译
+```sh
+cargo build --release --target=wasm32-unknown-unknown
+```
+生成路径：target/wasm32-unknown-unknown/release/asset.wasm
+
+## 环境依赖
+```sh
+# rustc cargo wasm-pack
+rustc -V
+  rustc 1.63.0 (4b91a6ea7 2022-08-08)
+cargo -V
+  cargo 1.63.0 (fd9c4297c 2022-07-01)
+```
+
+## 安装rust cargo
+
+> 官方地址: https://www.rust-lang.org/tools/install
+
+**windows**
+
+>  To install Rust on Windows, download and run [rustup-init.exe](https://win.rustup.rs/), then follow the onscreen instructions.
+>
+> https://win.rustup.rs/
+
+**Linux、Mac**
+
+> curl https://sh.rustup.rs -sSf | sh
+
+## 结构
+
+SimContext
+  SqlSimContext 
+  KVSimContext
+
+
+
+
+## 其他介绍
+首先是一些编译优化flag，它们-O0，-O1，-O2，-Os，-Oz，-O3。
+
+-O0：
+不进行编译优化（这是默认情况）。当你刚开始移植项目是推荐使用它，因为它会包含许多断言。
+
+-O1：
+简单优化。推荐你在既想缩短编译时间又想编译优化时使用。它毕竟比-O2级别的优化编译起来快多了。它会进行asm.js和llvm的-O1进行优化，它会relooping，会删除运行时断言和C++异常捕获，它也会使得-s ALIASING_FUNCTION_POINTERS=1。
+想要C++异常捕获重新可用，请设置：-s DISABLE_EXCEPTION_CATCHING=0。
+
+-O2：
+和-O1类似，不过多了JavaScript级别的优化以及一些llvm -O3的优化项。当你想发布项目的时候，推荐使用本级别优化。
+
+-O3：
+和-O2类似，不过比-O2又多了一些JavaScript优化，而且编译时间明显比-O2长。这个也推荐在发布版本的时候使用。
+
+-Os:
+和-O3类似，不过增加了额外的优化以减小生成的代码体积，代价是比-O3性能差一点。-Os优化会同时影响llvm bitcode 和JavaScript文件的生成。
+
+-Oz:
+和-Os类似，不过进一步减小了代码体积。
+
+
+Cargo.toml配置参考：
+https://rustwasm.github.io/wasm-pack/book/cargo-toml-configuration.html?highlight=wasm-opt#cargotoml-configuration
\ No newline at end of file
--- a/asset/src/asset.rs
+++ b/asset/src/asset.rs
--- a/asset/src/lib.rs
+++ b/asset/src/lib.rs
+pub mod asset;
\ No newline at end of file
--- a/counter/Cargo.toml
+++ b/counter/Cargo.toml
+[package]
+name = "counter"
+version = "0.1.0"
+authors = ["chainmaker"]
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+[dependencies]
+contract_sdk_rust = { git = "https://git.code.tencent.com/ChainMaker/contract-sdk-rust.git", branch="v2.3.0_qc" }
+
+[profile.release]
+# Tell `rustc` to optimize for small code size.
+opt-level = "s"
--- a/counter/LICENSE_APACHE
+++ b/counter/LICENSE_APACHE
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+   "License" shall mean the terms and conditions for use, reproduction,
+   and distribution as defined by Sections 1 through 9 of this document.
+
+   "Licensor" shall mean the copyright owner or entity authorized by
+   the copyright owner that is granting the License.
+
+   "Legal Entity" shall mean the union of the acting entity and all
+   other entities that control, are controlled by, or are under common
+   control with that entity. For the purposes of this definition,
+   "control" means (i) the power, direct or indirect, to cause the
+   direction or management of such entity, whether by contract or
+   otherwise, or (ii) ownership of fifty percent (50%) or more of the
+   outstanding shares, or (iii) beneficial ownership of such entity.
+
+   "You" (or "Your") shall mean an individual or Legal Entity
+   exercising permissions granted by this License.
+
+   "Source" form shall mean the preferred form for making modifications,
+   including but not limited to software source code, documentation
+   source, and configuration files.
+
+   "Object" form shall mean any form resulting from mechanical
+   transformation or translation of a Source form, including but
+   not limited to compiled object code, generated documentation,
+   and conversions to other media types.
+
+   "Work" shall mean the work of authorship, whether in Source or
+   Object form, made available under the License, as indicated by a
+   copyright notice that is included in or attached to the work
+   (an example is provided in the Appendix below).
+
+   "Derivative Works" shall mean any work, whether in Source or Object
+   form, that is based on (or derived from) the Work and for which the
+   editorial revisions, annotations, elaborations, or other modifications
+   represent, as a whole, an original work of authorship. For the purposes
+   of this License, Derivative Works shall not include works that remain
+   separable from, or merely link (or bind by name) to the interfaces of,
+   the Work and Derivative Works thereof.
+
+   "Contribution" shall mean any work of authorship, including
+   the original version of the Work and any modifications or additions
+   to that Work or Derivative Works thereof, that is intentionally
+   submitted to Licensor for inclusion in the Work by the copyright owner
+   or by an individual or Legal Entity authorized to submit on behalf of
+   the copyright owner. For the purposes of this definition, "submitted"
+   means any form of electronic, verbal, or written communication sent
+   to the Licensor or its representatives, including but not limited to
+   communication on electronic mailing lists, source code control systems,
+   and issue tracking systems that are managed by, or on behalf of, the
+   Licensor for the purpose of discussing and improving the Work, but
+   excluding communication that is conspicuously marked or otherwise
+   designated in writing by the copyright owner as "Not a Contribution."
+
+   "Contributor" shall mean Licensor and any individual or Legal Entity
+   on behalf of whom a Contribution has been received by Licensor and
+   subsequently incorporated within the Work.
+
+2. Grant of Copyright License. Subject to the terms and conditions of
+   this License, each Contributor hereby grants to You a perpetual,
+   worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+   copyright license to reproduce, prepare Derivative Works of,
+   publicly display, publicly perform, sublicense, and distribute the
+   Work and such Derivative Works in Source or Object form.
+
+3. Grant of Patent License. Subject to the terms and conditions of
+   this License, each Contributor hereby grants to You a perpetual,
+   worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+   (except as stated in this section) patent license to make, have made,
+   use, offer to sell, sell, import, and otherwise transfer the Work,
+   where such license applies only to those patent claims licensable
+   by such Contributor that are necessarily infringed by their
+   Contribution(s) alone or by combination of their Contribution(s)
+   with the Work to which such Contribution(s) was submitted. If You
+   institute patent litigation against any entity (including a
+   cross-claim or counterclaim in a lawsuit) alleging that the Work
+   or a Contribution incorporated within the Work constitutes direct
+   or contributory patent infringement, then any patent licenses
+   granted to You under this License for that Work shall terminate
+   as of the date such litigation is filed.
+
+4. Redistribution. You may reproduce and distribute copies of the
+   Work or Derivative Works thereof in any medium, with or without
+   modifications, and in Source or Object form, provided that You
+   meet the following conditions:
+
+   (a) You must give any other recipients of the Work or
+       Derivative Works a copy of this License; and
+
+   (b) You must cause any modified files to carry prominent notices
+       stating that You changed the files; and
+
+   (c) You must retain, in the Source form of any Derivative Works
+       that You distribute, all copyright, patent, trademark, and
+       attribution notices from the Source form of the Work,
+       excluding those notices that do not pertain to any part of
+       the Derivative Works; and
+
+   (d) If the Work includes a "NOTICE" text file as part of its
+       distribution, then any Derivative Works that You distribute must
+       include a readable copy of the attribution notices contained
+       within such NOTICE file, excluding those notices that do not
+       pertain to any part of the Derivative Works, in at least one
+       of the following places: within a NOTICE text file distributed
+       as part of the Derivative Works; within the Source form or
+       documentation, if provided along with the Derivative Works; or,
+       within a display generated by the Derivative Works, if and
+       wherever such third-party notices normally appear. The contents
+       of the NOTICE file are for informational purposes only and
+       do not modify the License. You may add Your own attribution
+       notices within Derivative Works that You distribute, alongside
+       or as an addendum to the NOTICE text from the Work, provided
+       that such additional attribution notices cannot be construed
+       as modifying the License.
+
+   You may add Your own copyright statement to Your modifications and
+   may provide additional or different license terms and conditions
+   for use, reproduction, or distribution of Your modifications, or
+   for any such Derivative Works as a whole, provided Your use,
+   reproduction, and distribution of the Work otherwise complies with
+   the conditions stated in this License.
+
+5. Submission of Contributions. Unless You explicitly state otherwise,
+   any Contribution intentionally submitted for inclusion in the Work
+   by You to the Licensor shall be under the terms and conditions of
+   this License, without any additional terms or conditions.
+   Notwithstanding the above, nothing herein shall supersede or modify
+   the terms of any separate license agreement you may have executed
+   with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade
+   names, trademarks, service marks, or product names of the Licensor,
+   except as required for reasonable and customary use in describing the
+   origin of the Work and reproducing the content of the NOTICE file.
+
+7. Disclaimer of Warranty. Unless required by applicable law or
+   agreed to in writing, Licensor provides the Work (and each
+   Contributor provides its Contributions) on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+   implied, including, without limitation, any warranties or conditions
+   of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+   PARTICULAR PURPOSE. You are solely responsible for determining the
+   appropriateness of using or redistributing the Work and assume any
+   risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory,
+   whether in tort (including negligence), contract, or otherwise,
+   unless required by applicable law (such as deliberate and grossly
+   negligent acts) or agreed to in writing, shall any Contributor be
+   liable to You for damages, including any direct, indirect, special,
+   incidental, or consequential damages of any character arising as a
+   result of this License or out of the use or inability to use the
+   Work (including but not limited to damages for loss of goodwill,
+   work stoppage, computer failure or malfunction, or any and all
+   other commercial damages or losses), even if such Contributor
+   has been advised of the possibility of such damages.
+
+9. Accepting Warranty or Additional Liability. While redistributing
+   the Work or Derivative Works thereof, You may choose to offer,
+   and charge a fee for, acceptance of support, warranty, indemnity,
+   or other liability obligations and/or rights consistent with this
+   License. However, in accepting such obligations, You may act only
+   on Your own behalf and on Your sole responsibility, not on behalf
+   of any other Contributor, and only if You agree to indemnify,
+   defend, and hold each Contributor harmless for any liability
+   incurred by, or claims asserted against, such Contributor by reason
+   of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
--- a/counter/README.md
+++ b/counter/README.md
+## 编译
+```sh
+cargo build --release --target=wasm32-unknown-unknown
+```
+生成路径：target/wasm32-unknown-unknown/release/counter.wasm
+
+## 环境依赖
+```sh
+# rustc cargo wasm-pack
+rustc -V
+  rustc 1.63.0 (4b91a6ea7 2022-08-08)
+cargo -V
+  cargo 1.63.0 (fd9c4297c 2022-07-01)
+```
+
+## 安装rust cargo
+
+> 官方地址: https://www.rust-lang.org/tools/install
+
+**windows**
+
+>  To install Rust on Windows, download and run [rustup-init.exe](https://win.rustup.rs/), then follow the onscreen instructions.
+>
+> https://win.rustup.rs/
+
+**Linux、Mac**
+
+> curl https://sh.rustup.rs -sSf | sh
+
+## 结构
+
+SimContext
+  SqlSimContext 
+  KVSimContext
+
+
+
+
+## 其他介绍
+首先是一些编译优化flag，它们-O0，-O1，-O2，-Os，-Oz，-O3。
+
+-O0：
+不进行编译优化（这是默认情况）。当你刚开始移植项目是推荐使用它，因为它会包含许多断言。
+
+-O1：
+简单优化。推荐你在既想缩短编译时间又想编译优化时使用。它毕竟比-O2级别的优化编译起来快多了。它会进行asm.js和llvm的-O1进行优化，它会relooping，会删除运行时断言和C++异常捕获，它也会使得-s ALIASING_FUNCTION_POINTERS=1。
+想要C++异常捕获重新可用，请设置：-s DISABLE_EXCEPTION_CATCHING=0。
+
+-O2：
+和-O1类似，不过多了JavaScript级别的优化以及一些llvm -O3的优化项。当你想发布项目的时候，推荐使用本级别优化。
+
+-O3：
+和-O2类似，不过比-O2又多了一些JavaScript优化，而且编译时间明显比-O2长。这个也推荐在发布版本的时候使用。
+
+-Os:
+和-O3类似，不过增加了额外的优化以减小生成的代码体积，代价是比-O3性能差一点。-Os优化会同时影响llvm bitcode 和JavaScript文件的生成。
+
+-Oz:
+和-Os类似，不过进一步减小了代码体积。
+
+
+Cargo.toml配置参考：
+https://rustwasm.github.io/wasm-pack/book/cargo-toml-configuration.html?highlight=wasm-opt#cargotoml-configuration
\ No newline at end of file
--- a/counter/src/counter.rs
+++ b/counter/src/counter.rs
+///
+/// Copyright (C) BABEC. All rights reserved.
+/// 
+/// SPDX-License-Identifier: Apache-2.0
+/// 
+
+use contract_sdk_rust::sim_context;
+use sim_context::*;
+
+// 安装合约时会执行此方法，必须
+#[no_mangle]
+pub extern "C" fn init_contract() {
+    // 安装时的业务逻辑，可为空
+    sim_context::log("init_contract");
+}
+
+// 升级合约时会执行此方法，必须
+#[no_mangle]
+pub extern "C" fn upgrade() {
+    // 升级时的业务逻辑，可为空
+    sim_context::log("upgrade success");
+}
+
+#[no_mangle]
+pub extern "C" fn increase() {
+    sim_context::log("invoke increase");
+    let ctx = &mut sim_context::get_sim_context();
+
+    let mut key = ctx.arg_as_utf8_str("key");
+    if key.len() == 0 {
+        key = "counter1".to_string();
+    }
+    let r = ctx.get_state("count", &key);
+
+    let count = r.unwrap();
+    let counti32 = i32_from(count.as_slice());
+    let count_new_i32 = counti32 + 1;
+    let count_new = count_new_i32.to_le_bytes().to_vec();
+    let is_ok = ctx.put_state("count", &key, count_new.as_slice());
+    if is_ok == sim_context::SUCCESS_CODE {
+        let s = format!("++ stone success count={}", count_new_i32.to_string());
+        ctx.log(&s);
+        let _ = ctx.ok(s.as_bytes());
+    } else {
+        let s = format!("++ stone fail old count={}", counti32.to_string());
+        ctx.log(&s);
+        let _ = ctx.error(&key);
+    }
+}
+
+#[no_mangle]
+pub extern "C" fn query() {
+    sim_context::log("invoke query");
+    let ctx = &mut sim_context::get_sim_context();
+
+    let mut key = ctx.arg_as_utf8_str("key");
+    if key.len() == 0 {
+        key = "counter1".to_string();
+    }
+
+    let r = ctx.get_state("count", &key);
+    let count = r.unwrap();
+    let count: i32 = i32_from(count.as_slice());
+
+    let log_str = format!("query count {}", count);
+    let r = count.to_string();
+
+    ctx.log(&log_str);
+    ctx.ok(r.as_bytes());
+}
+
+pub fn i32_from(amount: &[u8]) -> i32 {
+    if amount.len() == 4 {
+        // receiver account money bytes into i32
+        let b: i32 = i32::from_le_bytes([
+            *amount.get(0).unwrap(),
+            *amount.get(1).unwrap(),
+            *amount.get(2).unwrap(),
+            *amount.get(3).unwrap(),
+        ]);
+        return b;
+    } else {
+        return 0;
+    }
+}
--- a/counter/src/lib.rs
+++ b/counter/src/lib.rs
+pub mod counter;
\ No newline at end of file
--- a/fact/Cargo.toml
+++ b/fact/Cargo.toml
@@ -2,13 +2,13 @@
 name = "fact"
 version = "0.1.0"
 authors = ["chainmaker"]
-edition = "2018"
+edition = "2021"

 [lib]
 crate-type = ["cdylib", "rlib"]

 [dependencies]
-contract_sdk_rust = { git = "https://git.code.tencent.com/ChainMaker/contract-sdk-rust.git", branch="v2.1.0_refer" }
+contract_sdk_rust = { git = "https://git.code.tencent.com/ChainMaker/contract-sdk-rust.git", branch="v2.3.0_qc" }

 [profile.release]
 # Tell `rustc` to optimize for small code size.