[docker] Fixes #103 Skycoin VS Code dev image for Python

.gitignore

@@ -12,6 +12,7 @@ __pycache__/
 *.orig
 Pyskycoin-*
 eggs
+wheelhouse/
 
 *~
 
@@ -25,9 +26,14 @@ tests/mytest.py
 .tox
 .cache
 
+# Temp files
 *.swp
 *.swo
 
 # IDES
 .idea/
-.vscode/
+.vscode/
+
+# SWIG
+*.kbk
+

.travis.yml

@@ -29,6 +29,8 @@ matrix:
     dist: xenial
     python: 3.7
     sudo: true
+    services:
+      - docker
     env:
     - TOXENV=py37
     - PYTHON=3.7
@@ -58,40 +60,74 @@ matrix:
     - PYTHON=3.7.1
     - TOXENV=py37
 before_install:
-- cd gopath/src/github.com/skycoin/skycoin && git checkout develop && cd ${TRAVIS_BUILD_DIR}
-- if [[ $TRAVIS_OS_NAME == 'linux' ]]; then bash ./.travis/install-linux.sh ; fi
-- if [[ $TRAVIS_OS_NAME == 'osx' ]]; then bash ./.travis/install-osx.sh; fi
-- if [[ $TRAVIS_OS_NAME == 'osx' ]]; then export PYCMD_VERSION="$(echo ${PYTHON} |
-  cut -d . -f 1,2)" ; fi
-- if [[ $TRAVIS_OS_NAME == 'osx' ]]; then export PYCMD_PATH="$(pyenv which python${PYCMD_VERSION})"
-  ; fi
-- if [[ $TRAVIS_OS_NAME == 'osx' ]]; then export PYCMD_DIRPATH="$( dirname ${PYCMD_PATH}
-  )" ; fi
-- if [[ $TRAVIS_OS_NAME == 'osx' ]]; then export PATH="${PYCMD_DIRPATH}:/Users/travis/.pyenv/shims:${PATH}"
-  ; fi
-- if [[ $TRAVIS_OS_NAME == 'osx' ]]; then eval "alias python${PYCMD_VERSION}=$(pyenv
-  which python${PYCMD_VERSION})" && eval "alias python2.7=$(pyenv which python2.7)";
+- cd gopath/src/github.com/skycoin/skycoin && git checkout v0.25.0 && cd ${TRAVIS_BUILD_DIR}
+- if [[ "$TRAVIS_OS_NAME" == 'linux' ]]; then bash ./.travis/install-linux.sh ; fi
+- if [[ "$TRAVIS_OS_NAME" == 'osx' ]]; then bash ./.travis/install-osx.sh; fi
+- if [[ "$TRAVIS_OS_NAME" == 'osx' ]]; then
+  export PYCMD_VERSION="$(echo ${PYTHON} | cut -d . -f 1,2)" ;
   fi
-- if [[ $TRAVIS_OS_NAME == 'osx' ]]; then pyenv versions ; fi
-- if [[ $TRAVIS_OS_NAME == 'osx' ]]; then pyenv which python${PYCMD_VERSION} ; fi
-- if [[ $TRAVIS_OS_NAME == 'osx' ]]; then eval "python${PYCMD_VERSION} --version"
-  ; fi
+- if [[ "$TRAVIS_OS_NAME" == 'osx' ]]; then export PYCMD_PATH="$(pyenv which python${PYCMD_VERSION})"; fi
+- if [[ "$TRAVIS_OS_NAME" == 'osx' ]]; then export PYCMD_DIRPATH="$( dirname ${PYCMD_PATH})" ; fi
+- if [[ "$TRAVIS_OS_NAME" == 'osx' ]]; then export PATH="${PYCMD_DIRPATH}:/Users/travis/.pyenv/shims:${PATH}"; fi
+- if [[ "$TRAVIS_OS_NAME" == 'osx' ]]; then
+  eval "alias python${PYCMD_VERSION}=$(pyenv which python${PYCMD_VERSION})" && eval "alias python2.7=$(pyenv which python2.7)";
+  fi
+- if [[ "$TRAVIS_OS_NAME" == 'osx' ]]; then pyenv versions ; fi
+- if [[ "$TRAVIS_OS_NAME" == 'osx' ]]; then pyenv which python${PYCMD_VERSION} ; fi
+- if [[ "$TRAVIS_OS_NAME" == 'osx' ]]; then eval "python${PYCMD_VERSION} --version"; fi
 - echo "PATH=$PATH"
 install:
 - eval "$(gimme 1.10)"
+before_script:
+  # Install PyPA Docker images for building multilinux wheels
+script:
+# Test PySkycoin
+- make test-ci
 after_failure:
 - cat ./.tox/${TOXENV}/log/${TOXENV}-*.log
-script: make test-ci
 notifications:
   email: false
   webhooks: https://fathomless-fjord-24024.herokuapp.com/notify
+before_deploy:
+- echo "Generating distribution archives before deploy"
+- make sdist
+- make bdist_wheel
+- if [ $TRAVIS_OS_NAME == "linux" && $TOXENV == "py37" ]; then make bdist_manylinux_amd64 ; fi
+- ls dist
 deploy:
-  provider: pypi
-  user: olemis
-  distributions: sdist bdist_wheel
+- provider: releases
+  api_key:
+    secure: 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
+  file: dist/*
+  skip_cleanup: true
+  skip_existing: true
+  on:
+    all_branches: true
+    tags: true
+    repo: skycoin/pyskycoin
+- provider: pypi
+  distributions: sdist
+  skip_cleanup: true
+  skip_existing: true
+  user:
+    secure: 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
+  password:
+    secure: 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
+  on:
+    all_branches: true
+    tags: true
+    repo: skycoin/pyskycoin
+- provider: pypi
+  distributions: bdist_wheel
+  skip_cleanup: true
+  skip_existing: true
+  user:
+    secure: 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
   password:
-    secure: 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
+    secure: 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
   on:
+    all_branches: true
     tags: true
     repo: skycoin/pyskycoin
-    condition: "$TOXENV = py37"
+    condition: $TRAVIS_OS_NAME = "osx"
+# TODO: Upload manylinux wheels to PyPI

.travis/build_wheels.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+set -e -x
+
+# Install system packages required by our library
+yum install -y sudo pcre pcre-devel
+mkdir -p "$HOME/bin"
+PIP=/opt/python/cp27-cp27m/bin/pip source /io/.travis/install-linux.sh
+eval "$(gimme 1.10)"
+
+# Compile wheels
+for PYBIN in /opt/python/*/bin; do
+  "${PYBIN}/pip" install -r /io/requirements.dev.txt
+  "${PYBIN}/pip" wheel /io/ -w wheelhouse/
+done
+
+# Bundle external shared libraries into the wheels
+for whl in wheelhouse/*.whl; do
+  auditwheel repair "$whl" -w /io/wheelhouse/
+done
+

.travis/check_wheels.sh

@@ -0,0 +1,12 @@
+
+#!/bin/bash
+set -e -x
+
+# Code that follows assumes that wheels have been generated by build_wheels.sh
+
+# Install packages and test
+for PYBIN in /opt/python/*/bin/; do
+  "${PYBIN}/pip" install pyskycoin --no-index -f /io/wheelhouse
+  (cd /io ; "${PYBIN}/python" -m pytest --showlocals tests )
+done
+

.travis/install-linux.sh

@@ -2,17 +2,27 @@
 
 set -ev
 
+# Environment checks
+if [ "$PIP" == "" ]; then
+  export PIP='python -m pip'
+fi
+
+# Repository root path
+REPO_ROOT="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )/.."
+echo "Install Linux packages from $REPO_ROOT"
+
 # Install gimme
-curl -sL -o ~/bin/gimme https://raw.githubusercontent.com/travis-ci/gimme/master/gimme
-chmod +x ~/bin/gimme
+curl -sL -o "$HOME/bin/gimme" https://raw.githubusercontent.com/travis-ci/gimme/master/gimme
+chmod +x "$HOME/bin/gimme"
 
-#Install Python libraries
-python -m pip install --upgrade pip setuptools wheel tox tox-travis tox-pyenv pytest pytest-runner
+# Install Python libraries
+$PIP install --upgrade pip setuptools tox-travis
+$PIP install -r "$REPO_ROOT/requirements.dev.txt"
 
 # Compile SWIG
 mkdir swig_build && \
   cd swig_build && \
-  wget http://prdownloads.sourceforge.net/swig/swig-3.0.12.tar.gz && \
+  curl -sL -o "swig-3.0.12.tar.gz" http://prdownloads.sourceforge.net/swig/swig-3.0.12.tar.gz && \
   tar -zxf swig-3.0.12.tar.gz && \
   cd swig-3.0.12 && \
   sudo ./configure --prefix=/usr && \

CHANGELOG.md

@@ -14,6 +14,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Add `make help`
 - Add Python-specific SWIG interface files
 - Add `skycoin/skycoindev-python:develop` Docker image including Python `3.4`, `3.5`, `3.6`, and `3.7`
+- Support for Skycoin `api`, `cipher`, `cli`, `coin`, `params`, `util`, `wallet`, `wallet_option`.
 
 ### Fixed
 

MANIFEST.in

@@ -4,6 +4,9 @@ recursive-include . *.md
 # Include the license file
 include LICENSE.txt
 
+include requirements.txt
+include requirements.dev.txt
+
 include Makefile
 include gopath/src/github.com/skycoin/skycoin/Makefile
 recursive-exclude *.a

Makefile

@@ -1,3 +1,7 @@
+.DEFAULT_GOAL := help
+.PHONY: configure build-libc build-swig develop build-libc-swig build 
+.PHONY: test test-ci help
+
 # Compilation output
 .ONESHELL:
 SHELL := /bin/bash
@@ -11,6 +15,7 @@ BUILDLIBC_DIR = $(SKYBUILD_DIR)/libskycoin
 LIBC_DIR = $(SKYCOIN_DIR)/lib/cgo
 LIBSWIG_DIR = swig
 BUILD_DIR = build
+DIST_DIR = dist
 BIN_DIR = $(SKYCOIN_DIR)/bin
 INCLUDE_DIR = $(SKYCOIN_DIR)/include
 FULL_PATH_LIB = $(PWD)/$(BUILDLIBC_DIR)
@@ -29,6 +34,7 @@ endif
 configure: ## Configure build environment
 	mkdir -p $(BUILD_DIR)/usr/tmp $(BUILD_DIR)/usr/lib $(BUILD_DIR)/usr/include
 	mkdir -p $(BUILDLIBC_DIR) $(BIN_DIR) $(INCLUDE_DIR)
+	mkdir -p $(DIST_DIR)
 
 $(BUILDLIBC_DIR)/libskycoin.a: $(LIB_FILES) $(SRC_FILES) $(HEADER_FILES)
 	rm -f $(BUILDLIBC_DIR)/libskycoin.a
@@ -40,7 +46,7 @@ $(BUILDLIBC_DIR)/libskycoin.a: $(LIB_FILES) $(SRC_FILES) $(HEADER_FILES)
 
 build-libc: configure $(BUILDLIBC_DIR)/libskycoin.a ## Build libskycoin C client library
 
-build-swig: ## Generate Pyhton C module from SWIG interfaces
+build-swig: ## Generate Python C module from SWIG interfaces
 	#Generate structs.i from skytypes.gen.h
 	rm -f $(LIBSWIG_DIR)/structs.i
 	cp $(INCLUDE_DIR)/skytypes.gen.h $(LIBSWIG_DIR)/structs.i
@@ -64,12 +70,39 @@ develop: ## Install PySkycoin for development
 build-libc-swig: build-libc build-swig
 
 build: build-libc-swig ## Build PySkycoin Python package
+	$(PYTHON_BIN) setup.py build
 
 test-ci: ## Run tests on (Travis) CI build
 	tox
 
 test: build-libc build-swig develop ## Run project test suite
 	$(PYTHON_BIN) setup.py test
 
+sdist: ## Create source distribution archive
+	$(PYTHON_BIN) setup.py sdist --formats=gztar
+
+bdist_wheel: ## Create architecture-specific binary wheel distribution archive
+	$(PYTHON_BIN) setup.py bdist_wheel
+
+# FIXME: After libskycoin 32-bits binaries add bdist_manylinux_i686
+bdist_manylinux: bdist_manylinux_amd64 ## Create multilinux binary wheel distribution archives
+
+bdist_manylinux_amd64: ## Create 64 bits multilinux binary wheel distribution archives
+	docker pull quay.io/pypa/manylinux1_x86_64
+	docker run --rm -t -v $(PWD):/io quay.io/pypa/manylinux1_x86_64 /io/.travis/build_wheels.sh
+	ls wheelhouse/
+	cp -v wheelhouse/* $(DIST_DIR)
+
+bdist_manylinux_i686: ## Create 32 bits multilinux binary wheel distribution archives
+	docker pull quay.io/pypa/manylinux1_i686
+	docker run --rm -t -v $(PWD):/io quay.io/pypa/manylinux1_i686 linux32 /io/.travis/build_wheels.sh
+	ls wheelhouse/
+	cp -v wheelhouse/* $(DIST_DIR)
+
+dist: sdist bdist_wheel bdist_manylinux_amd64 ## Create distribution archives
+
+check-dist: dist ## Perform self-tests upon distributions archives
+	docker run --rm -t -v $(PWD):/io quay.io/pypa/manylinux1_i686 linux32 /io/.travis/check_wheels.sh
+
 help: ## List available commands
 	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'

README.md

@@ -196,7 +196,7 @@ The project has two branches: `master` and `develop`.
 
 Separate stable development branches will be created to work on releases for supporting the
 most recent stable version of Skycoin. The name of these branches should be the Skycoin
-imajor and minor version numbers followed by `dev` suffix e.g. `0.25dev`.
+major and minor version numbers followed by `dev` suffix e.g. `0.25dev`.
 These branches may be forked out of either `master` or `develop` branches, and 
 the submodule at `gopath/src/github.com/skycoin/skycoin` has to be
 in sync with the corresponding tag of `skycoin/skycoin` official repository.
@@ -224,10 +224,10 @@ $ make test
 0. Update `__version__` in `skycoin/__init__.py`
 0. Run `make build` to make sure that the code base is up to date
 0. Update `CHANGELOG.md`: move the "unreleased" changes to the version and add the date.
-0. Update files in https://github.com/skycoin/repo-info/tree/master/repos/skycoin/remote for `skycoin/skycoin-python` Docker image, adding a new file for the new version and adjusting any configuration text that may have changed
 0. Follow the steps in [pre-release testing](#pre-release-testing)
 0. Make a PR merging the release branch into `master`
 0. Review the PR and merge it
+0. Update files in https://github.com/skycoin/repo-info/tree/master/repos/skycoin/remote for `simelotech/skycoindev-dotnet` Docker image, adding a new file for the new version and adjusting any configuration text that may have changed
 0. Tag the `master` branch with the version number. Version tags start with `v`, e.g. `v0.20.0`. Sign the tag. If you have your GPG key in github, creating a release on the Github website will automatically tag the release. It can be tagged from the command line with `git tag -as v0.20.0 $COMMIT_ID`, but Github will not recognize it as a "release".
 0. Release builds are created and uploaded by travis. To do it manually, checkout the master branch and follow the [create release builds instructions](#creating-release-builds).
 0. Checkout `develop` branch and bump `__version__` to next [`dev` version number](https://www.python.org/dev/peps/pep-0440/#developmental-releases).
@@ -243,7 +243,7 @@ make integration-test
 
 #### Creating release builds
 
-Release builds should be created from `master` branch . After [updating release version](#update-the-version) it is necessary to follow these steps
+Release builds should be created from git tags . After [updating release version](#update-the-version) it is necessary to follow these steps
 
 ```sh
 cd /path/to/pyskycoin