feat: optimize bitseed_generator

examples/bitseed_generator/.gitignore

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+/target
+/artifacts

examples/bitseed_generator/Makefile

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+.PHONY: all clean build test optimize
+
+all: build
+
+build:
+	cargo wasm --target-dir="./target"
+
+test:
+	cargo test
+
+optimize: build
+	docker run -u 1000 --rm -v "$(CURDIR)":/code \
+		--entrypoint /code/scripts/optimize.sh \
+		cosmwasm/optimizer:0.16.0 .
+
+clean:
+	rm -rf ./artifacts && rm -rf ./target
+

examples/bitseed_generator/scripts/optimize.sh

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+#!/bin/ash
+# shellcheck shell=dash
+# See https://www.shellcheck.net/wiki/SC2187
+set -o errexit -o nounset -o pipefail
+command -v shellcheck >/dev/null && shellcheck "$0"
+
+export PATH="$PATH:/root/.cargo/bin"
+
+# Debug toolchain and default Rust version
+rustup toolchain list
+cargo --version
+
+# Prepare artifacts directory for later use
+mkdir -p artifacts
+
+# Delete previously built artifacts. Those can exist if the image is called
+# with a cache mounted to /target. In cases where contracts are removed over time,
+# old builds in cache should not be contained in the result of the next build.
+rm -f /target/wasm32-unknown-unknown/release/*.wasm
+
+# There are two cases here
+# 1. The contract is included in the root workspace (eg. `cosmwasm-template`)
+#    In this case, we pass no argument, just mount the proper directory.
+# 2. Contracts are excluded from the root workspace, but import relative paths from other packages (only `cosmwasm`).
+#    In this case, we mount root workspace and pass in a path `docker run <repo> ./contracts/hackatom`
+
+# This parameter allows us to mount a folder into docker container's "/code"
+# and build "/code/contracts/mycontract".
+# The default value for $1 is "." (see CMD in the Dockerfile).
+
+# Ensure we get exactly one argument and this is a directory (the path to the Cargo project to be built)
+if [ "$#" -ne 1 ] || ! [ -d "$1" ]; then
+  echo "Usage: $0 DIRECTORY" >&2
+  exit 1
+fi
+PROJECTDIR="$1"
+
+echo "Optimizing artifacts ..."
+for WASM in /code/target/wasm32-unknown-unknown/release/*.wasm; do
+  [ -e "$WASM" ] || continue # https://superuser.com/a/519493
+
+  OUT_FILENAME=$(basename "$WASM")
+  echo "Optimizing $OUT_FILENAME ..."
+  # --signext-lowering is needed to support blockchains runnning CosmWasm < 1.3. It can be removed eventually
+  wasm-opt -Os --signext-lowering "$WASM" -o "artifacts/$OUT_FILENAME"
+done
+
+echo "Post-processing artifacts..."
+(
+  cd artifacts
+
+  if test -n "$(find . -maxdepth 1 -name '*.wasm' -print -quit)"; then
+    sha256sum -- *.wasm | tee checksums.txt
+  else
+    echo "Warn: No .wasm file built. Check your build configuration in Cargo.toml."
+  fi
+)
+
+echo "Done."