Feature/12 ibc dispatcher

README.md

@@ -108,6 +108,21 @@ Have a look at unit tests showing how to:
 - mint an NFT for this instantiated collection
 - transfer an NFT to another address
 
+## IBC Dispatcher
+
+The objective of this (not yet finished) contract is the following:
+- a source contract on chain A wants to execute
+- a target contract on chain B, where in return
+- source contract gets a response back from target contract.
+
+This can already be done by using IBC - hence this requires a lot of boiler plate code. Basically all IBC calls looks the same.
+
+IBC dispatcher to the rescue:
+- a source chain can pass target message along with target contract address and IBC channel (telling on which chain it is) and
+- pass this message to the dispatcher, where
+- dispatcher pass it to target contract on the other channel, where in return
+- source target gets a response back from the dispatcher
+
 # Resources
 
 Ark Protocol PoC

contracts/echo/.cargo/config

@@ -0,0 +1,4 @@
+[alias]
+wasm = "build --release --target wasm32-unknown-unknown"
+unit-test = "test --lib"
+schema = "run --example schema"

contracts/echo/.circleci/config.yml

@@ -0,0 +1,61 @@
+version: 2.1
+
+executors:
+  builder:
+    docker:
+      - image: buildpack-deps:trusty
+
+jobs:
+  docker-image:
+    executor: builder
+    steps:
+      - checkout
+      - setup_remote_docker
+        docker_layer_caching: true
+      - run:
+          name: Build Docker artifact
+          command: docker build --pull -t "cosmwasm/cw-gitpod-base:${CIRCLE_SHA1}" .
+      - run:
+          name: Push application Docker image to docker hub
+          command: |
+            if [ "${CIRCLE_BRANCH}" = "master" ]; then
+              docker tag "cosmwasm/cw-gitpod-base:${CIRCLE_SHA1}" cosmwasm/cw-gitpod-base:latest
+              docker login --password-stdin -u "$DOCKER_USER" \<<<"$DOCKER_PASS"
+              docker push cosmwasm/cw-gitpod-base:latest
+              docker logout
+            fi
+
+  docker-tagged:
+    executor: builder
+    steps:
+      - checkout
+      - setup_remote_docker
+        docker_layer_caching: true
+      - run:
+          name: Push application Docker image to docker hub
+          command: |
+            docker tag "cosmwasm/cw-gitpod-base:${CIRCLE_SHA1}" "cosmwasm/cw-gitpod-base:${CIRCLE_TAG}"
+            docker login --password-stdin -u "$DOCKER_USER" \<<<"$DOCKER_PASS"
+            docker push
+            docker logout
+
+workflows:
+  version: 2
+  test-suite:
+    jobs:
+      # this is now a slow process... let's only run on master
+      - docker-image:
+          filters:
+            branches:
+              only:
+                - master
+      - docker-tagged:
+          filters:
+            tags:
+              only:
+                - /^v.*/
+            branches:
+              ignore:
+                - /.*/
+            requires:
+              - docker-image

contracts/echo/.editorconfig

@@ -0,0 +1,11 @@
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.rs]
+indent_size = 4

contracts/echo/.github/workflows/Basic.yml

@@ -0,0 +1,75 @@
+# Based on https://github.com/actions-rs/example/blob/master/.github/workflows/quickstart.yml
+
+on: [push, pull_request]
+
+name: Basic
+
+jobs:
+
+  test:
+    name: Test Suite
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v2
+
+      - name: Install stable toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: 1.58.1
+          target: wasm32-unknown-unknown
+          override: true
+
+      - name: Run unit tests
+        uses: actions-rs/cargo@v1
+        with:
+          command: unit-test
+          args: --locked
+        env:
+          RUST_BACKTRACE: 1
+
+      - name: Compile WASM contract
+        uses: actions-rs/cargo@v1
+        with:
+          command: wasm
+          args: --locked
+        env:
+          RUSTFLAGS: "-C link-arg=-s"
+
+  lints:
+    name: Lints
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v2
+
+      - name: Install stable toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: 1.58.1
+          override: true
+          components: rustfmt, clippy
+
+      - name: Run cargo fmt
+        uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --all -- --check
+
+      - name: Run cargo clippy
+        uses: actions-rs/cargo@v1
+        with:
+          command: clippy
+          args: -- -D warnings
+
+      - name: Generate Schema
+        uses: actions-rs/cargo@v1
+        with:
+          command: schema
+          args: --locked
+
+      - name: Schema Changes
+        # fails if any changes not committed
+        run: git diff --exit-code schema

contracts/echo/.gitignore

@@ -0,0 +1,15 @@
+# Build results
+/target
+
+# Cargo+Git helper file (https://github.com/rust-lang/cargo/blob/0.44.1/src/cargo/sources/git/utils.rs#L320-L327)
+.cargo-ok
+
+# Text file backups
+**/*.rs.bk
+
+# macOS
+.DS_Store
+
+# IDEs
+*.iml
+.idea