Sync docs from master to gh-pages
This commit is contained in:
330
ghpages.sh
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330
ghpages.sh
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@@ -0,0 +1,330 @@
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#!/bin/bash -x
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set -e
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# Set default props like MAVEN_PATH, ROOT_FOLDER etc.
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function set_default_props() {
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# The script should be executed from the root folder
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ROOT_FOLDER=`pwd`
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echo "Current folder is ${ROOT_FOLDER}"
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if [[ ! -e "${ROOT_FOLDER}/.git" ]]; then
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echo "You're not in the root folder of the project!"
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exit 1
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fi
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# Prop that will let commit the changes
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COMMIT_CHANGES="no"
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MAVEN_PATH=${MAVEN_PATH:-}
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echo "Path to Maven is [${MAVEN_PATH}]"
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REPO_NAME=${PWD##*/}
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echo "Repo name is [${REPO_NAME}]"
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SPRING_CLOUD_STATIC_REPO=${SPRING_CLOUD_STATIC_REPO:-git@github.com:spring-cloud/spring-cloud-static.git}
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echo "Spring Cloud Static repo is [${SPRING_CLOUD_STATIC_REPO}"
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}
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# Check if gh-pages exists and docs have been built
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function check_if_anything_to_sync() {
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git remote set-url --push origin `git config remote.origin.url | sed -e 's/^git:/https:/'`
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if ! (git remote set-branches --add origin gh-pages && git fetch -q); then
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echo "No gh-pages, so not syncing"
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exit 0
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fi
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if ! [ -d docs/target/generated-docs ] && ! [ "${BUILD}" == "yes" ]; then
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echo "No gh-pages sources in docs/target/generated-docs, so not syncing"
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exit 0
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fi
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}
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function retrieve_current_branch() {
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# Code getting the name of the current branch. For master we want to publish as we did until now
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# http://stackoverflow.com/questions/1593051/how-to-programmatically-determine-the-current-checked-out-git-branch
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# If there is a branch already passed will reuse it - otherwise will try to find it
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CURRENT_BRANCH=${BRANCH}
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if [[ -z "${CURRENT_BRANCH}" ]] ; then
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CURRENT_BRANCH=$(git symbolic-ref -q HEAD)
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CURRENT_BRANCH=${CURRENT_BRANCH##refs/heads/}
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CURRENT_BRANCH=${CURRENT_BRANCH:-HEAD}
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fi
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echo "Current branch is [${CURRENT_BRANCH}]"
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git checkout ${CURRENT_BRANCH} || echo "Failed to check the branch... continuing with the script"
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}
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# Switches to the provided value of the release version. We always prefix it with `v`
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function switch_to_tag() {
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git checkout v${VERSION}
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}
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# Build the docs if switch is on
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function build_docs_if_applicable() {
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if [[ "${BUILD}" == "yes" ]] ; then
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./mvnw clean install -P docs -pl docs -DskipTests
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fi
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}
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# Get the name of the `docs.main` property
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# Get whitelisted branches - assumes that a `docs` module is available under `docs` profile
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function retrieve_doc_properties() {
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MAIN_ADOC_VALUE=$("${MAVEN_PATH}"mvn -q \
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-Dexec.executable="echo" \
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-Dexec.args='${docs.main}' \
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--non-recursive \
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org.codehaus.mojo:exec-maven-plugin:1.3.1:exec)
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echo "Extracted 'main.adoc' from Maven build [${MAIN_ADOC_VALUE}]"
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WHITELIST_PROPERTY=${WHITELIST_PROPERTY:-"docs.whitelisted.branches"}
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WHITELISTED_BRANCHES_VALUE=$("${MAVEN_PATH}"mvn -q \
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-Dexec.executable="echo" \
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-Dexec.args="\${${WHITELIST_PROPERTY}}" \
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org.codehaus.mojo:exec-maven-plugin:1.3.1:exec \
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-P docs \
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-pl docs)
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echo "Extracted '${WHITELIST_PROPERTY}' from Maven build [${WHITELISTED_BRANCHES_VALUE}]"
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}
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# Stash any outstanding changes
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function stash_changes() {
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git diff-index --quiet HEAD && dirty=$? || (echo "Failed to check if the current repo is dirty. Assuming that it is." && dirty="1")
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if [ "$dirty" != "0" ]; then git stash; fi
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}
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# Switch to gh-pages branch to sync it with current branch
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function add_docs_from_target() {
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local DESTINATION_REPO_FOLDER
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if [[ -z "${DESTINATION}" && -z "${CLONE}" ]] ; then
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DESTINATION_REPO_FOLDER=${ROOT_FOLDER}
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elif [[ "${CLONE}" == "yes" ]]; then
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mkdir -p ${ROOT_FOLDER}/target
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local clonedStatic=${ROOT_FOLDER}/target/spring-cloud-static
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if [[ ! -e "${clonedStatic}/.git" ]]; then
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echo "Cloning Spring Cloud Static to target"
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git clone ${SPRING_CLOUD_STATIC_REPO} ${clonedStatic} && git checkout gh-pages
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else
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echo "Spring Cloud Static already cloned - will pull changes"
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cd ${clonedStatic} && git checkout gh-pages && git pull origin gh-pages
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fi
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DESTINATION_REPO_FOLDER=${clonedStatic}/${REPO_NAME}
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mkdir -p ${DESTINATION_REPO_FOLDER}
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else
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if [[ ! -e "${DESTINATION}/.git" ]]; then
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echo "[${DESTINATION}] is not a git repository"
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exit 1
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fi
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DESTINATION_REPO_FOLDER=${DESTINATION}/${REPO_NAME}
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mkdir -p ${DESTINATION_REPO_FOLDER}
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echo "Destination was provided [${DESTINATION}]"
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fi
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cd ${DESTINATION_REPO_FOLDER}
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git checkout gh-pages
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git pull origin gh-pages
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# Add git branches
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###################################################################
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if [[ -z "${VERSION}" ]] ; then
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copy_docs_for_current_version
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else
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copy_docs_for_provided_version
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fi
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commit_changes_if_applicable
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}
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# Copies the docs by using the retrieved properties from Maven build
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function copy_docs_for_current_version() {
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if [[ "${CURRENT_BRANCH}" == "master" ]] ; then
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echo -e "Current branch is master - will copy the current docs only to the root folder"
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for f in docs/target/generated-docs/*; do
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file=${f#docs/target/generated-docs/*}
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if ! git ls-files -i -o --exclude-standard --directory | grep -q ^$file$; then
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# Not ignored...
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cp -rf $f ${ROOT_FOLDER}/
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git add -A ${ROOT_FOLDER}/$file
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fi
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done
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COMMIT_CHANGES="yes"
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else
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echo -e "Current branch is [${CURRENT_BRANCH}]"
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# http://stackoverflow.com/questions/29300806/a-bash-script-to-check-if-a-string-is-present-in-a-comma-separated-list-of-strin
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if [[ ",${WHITELISTED_BRANCHES_VALUE}," = *",${CURRENT_BRANCH},"* ]] ; then
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mkdir -p ${ROOT_FOLDER}/${CURRENT_BRANCH}
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echo -e "Branch [${CURRENT_BRANCH}] is whitelisted! Will copy the current docs to the [${CURRENT_BRANCH}] folder"
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for f in docs/target/generated-docs/*; do
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file=${f#docs/target/generated-docs/*}
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if ! git ls-files -i -o --exclude-standard --directory | grep -q ^$file$; then
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# Not ignored...
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# We want users to access 1.0.0.RELEASE/ instead of 1.0.0.RELEASE/spring-cloud.sleuth.html
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if [[ "${file}" == "${MAIN_ADOC_VALUE}.html" ]] ; then
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# We don't want to copy the spring-cloud-sleuth.html
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# we want it to be converted to index.html
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cp -rf $f ${ROOT_FOLDER}/${CURRENT_BRANCH}/index.html
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git add -A ${ROOT_FOLDER}/${CURRENT_BRANCH}/index.html
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else
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cp -rf $f ${ROOT_FOLDER}/${CURRENT_BRANCH}
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git add -A ${ROOT_FOLDER}/${CURRENT_BRANCH}/$file
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fi
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fi
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done
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COMMIT_CHANGES="yes"
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else
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echo -e "Branch [${CURRENT_BRANCH}] is not on the white list! Check out the Maven [${WHITELIST_PROPERTY}] property in
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[docs] module available under [docs] profile. Won't commit any changes to gh-pages for this branch."
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fi
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fi
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}
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# Copies the docs by using the explicitly provided version
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function copy_docs_for_provided_version() {
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local FOLDER=${DESTINATION_REPO_FOLDER}/${VERSION}
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mkdir -p ${FOLDER}
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echo -e "Current tag is [v${VERSION}] Will copy the current docs to the [${FOLDER}] folder"
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for f in ${ROOT_FOLDER}/docs/target/generated-docs/*; do
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file=${f#${ROOT_FOLDER}/docs/target/generated-docs/*}
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copy_docs_for_branch ${file} ${FOLDER}
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done
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COMMIT_CHANGES="yes"
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CURRENT_BRANCH="v${VERSION}"
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}
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# Copies the docs from target to the provided destination
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# Params:
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# $1 - file from target
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# $2 - destination to which copy the files
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function copy_docs_for_branch() {
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local file=$1
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local destination=$2
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if ! git ls-files -i -o --exclude-standard --directory | grep -q ^${file}$; then
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# Not ignored...
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# We want users to access 1.0.0.RELEASE/ instead of 1.0.0.RELEASE/spring-cloud.sleuth.html
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if [[ ("${file}" == "${MAIN_ADOC_VALUE}.html") || ("${file}" == "${REPO_NAME}.html") ]] ; then
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# We don't want to copy the spring-cloud-sleuth.html
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# we want it to be converted to index.html
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cp -rf $f ${destination}/index.html
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git add -A ${destination}/index.html
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else
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cp -rf $f ${destination}
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git add -A ${destination}/$file
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fi
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fi
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}
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function commit_changes_if_applicable() {
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if [[ "${COMMIT_CHANGES}" == "yes" ]] ; then
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COMMIT_SUCCESSFUL="no"
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git commit -a -m "Sync docs from ${CURRENT_BRANCH} to gh-pages" && COMMIT_SUCCESSFUL="yes" || echo "Failed to commit changes"
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# Uncomment the following push if you want to auto push to
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# the gh-pages branch whenever you commit to master locally.
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# This is a little extreme. Use with care!
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###################################################################
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if [[ "${COMMIT_SUCCESSFUL}" == "yes" ]] ; then
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git push origin gh-pages
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fi
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fi
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}
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# Switch back to the previous branch and exit block
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function checkout_previous_branch() {
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# If -version was provided we need to come back to root project
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cd ${ROOT_FOLDER}
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git checkout ${CURRENT_BRANCH} || echo "Failed to check the branch... continuing with the script"
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if [ "$dirty" != "0" ]; then git stash pop; fi
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exit 0
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}
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# Assert if properties have been properly passed
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function assert_properties() {
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echo "VERSION [${VERSION}], DESTINATION [${DESTINATION}], CLONE [${CLONE}]"
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if [[ "${VERSION}" != "" && (-z "${DESTINATION}" && -z "${CLONE}") ]] ; then echo "Version was set but destination / clone was not!"; exit 1;fi
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if [[ ("${DESTINATION}" != "" && "${CLONE}" != "") && -z "${VERSION}" ]] ; then echo "Destination / clone was set but version was not!"; exit 1;fi
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if [[ "${DESTINATION}" != "" && "${CLONE}" == "yes" ]] ; then echo "Destination and clone was set. Pick one!"; exit 1;fi
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}
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# Prints the usage
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function print_usage() {
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cat <<EOF
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The idea of this script is to update gh-pages branch with the generated docs. Without any options
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the script will work in the following manner:
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- if there's no gh-pages / target for docs module then the script ends
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- for master branch the generated docs are copied to the root of gh-pages branch
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- for any other branch (if that branch is whitelisted) a subfolder with branch name is created
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and docs are copied there
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- if the version switch is passed (-v) then a tag with (v) prefix will be retrieved and a folder
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with that version number will be created in the gh-pages branch. WARNING! No whitelist verification will take place
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- if the destination switch is passed (-d) then the script will check if the provided dir is a git repo and then will
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switch to gh-pages of that repo and copy the generated docs to `docs/<project-name>/<version>`
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- if the destination switch is passed (-d) then the script will check if the provided dir is a git repo and then will
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switch to gh-pages of that repo and copy the generated docs to `docs/<project-name>/<version>`
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USAGE:
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You can use the following options:
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-v|--version - the script will apply the whole procedure for a particular library version
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-d|--destination - the root of destination folder where the docs should be copied. You have to use the full path.
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E.g. point to spring-cloud-static folder. Can't be used with (-c)
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-b|--build - will run the standard build process after checking out the branch
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-c|--clone - will automatically clone the spring-cloud-static repo instead of providing the destination.
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Obviously can't be used with (-d)
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EOF
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}
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# ==========================================
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# ____ ____ _____ _____ _____ _______
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# / ____|/ ____| __ \|_ _| __ \__ __|
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# | (___ | | | |__) | | | | |__) | | |
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# \___ \| | | _ / | | | ___/ | |
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# ____) | |____| | \ \ _| |_| | | |
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# |_____/ \_____|_| \_\_____|_| |_|
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#
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# ==========================================
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while [[ $# > 0 ]]
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do
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key="$1"
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case ${key} in
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-v|--version)
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VERSION="$2"
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shift # past argument
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;;
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-d|--destination)
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DESTINATION="$2"
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shift # past argument
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;;
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-b|--build)
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BUILD="yes"
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;;
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-c|--clone)
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CLONE="yes"
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;;
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-h|--help)
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print_usage
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exit 0
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;;
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*)
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echo "Invalid option: [$1]"
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print_usage
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exit 1
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;;
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esac
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shift # past argument or value
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done
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assert_properties
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set_default_props
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check_if_anything_to_sync
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if [[ -z "${VERSION}" ]] ; then
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retrieve_current_branch
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else
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switch_to_tag
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fi
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build_docs_if_applicable
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retrieve_doc_properties
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stash_changes
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add_docs_from_target
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checkout_previous_branch
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1
images/remove.txt
Normal file
1
images/remove.txt
Normal file
@@ -0,0 +1 @@
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please remove once this directory is not empty
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737
spring-cloud-function.html
Normal file
737
spring-cloud-function.html
Normal file
@@ -0,0 +1,737 @@
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<!--[if IE]><meta http-equiv="X-UA-Compatible" content="IE=edge"><![endif]-->
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta name="generator" content="Asciidoctor 1.5.3">
|
||||
<title>Spring Cloud Function</title>
|
||||
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Open+Sans:300,300italic,400,400italic,600,600italic%7CNoto+Serif:400,400italic,700,700italic%7CDroid+Sans+Mono:400,700">
|
||||
<style>
|
||||
/* Asciidoctor default stylesheet | MIT License | http://asciidoctor.org */
|
||||
/* Remove comment around @import statement below when using as a custom stylesheet */
|
||||
/*@import "https://fonts.googleapis.com/css?family=Open+Sans:300,300italic,400,400italic,600,600italic%7CNoto+Serif:400,400italic,700,700italic%7CDroid+Sans+Mono:400,700";*/
|
||||
article,aside,details,figcaption,figure,footer,header,hgroup,main,nav,section,summary{display:block}
|
||||
audio,canvas,video{display:inline-block}
|
||||
audio:not([controls]){display:none;height:0}
|
||||
[hidden],template{display:none}
|
||||
script{display:none!important}
|
||||
html{font-family:sans-serif;-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%}
|
||||
body{margin:0}
|
||||
a{background:transparent}
|
||||
a:focus{outline:thin dotted}
|
||||
a:active,a:hover{outline:0}
|
||||
h1{font-size:2em;margin:.67em 0}
|
||||
abbr[title]{border-bottom:1px dotted}
|
||||
b,strong{font-weight:bold}
|
||||
dfn{font-style:italic}
|
||||
hr{-moz-box-sizing:content-box;box-sizing:content-box;height:0}
|
||||
mark{background:#ff0;color:#000}
|
||||
code,kbd,pre,samp{font-family:monospace;font-size:1em}
|
||||
pre{white-space:pre-wrap}
|
||||
q{quotes:"\201C" "\201D" "\2018" "\2019"}
|
||||
small{font-size:80%}
|
||||
sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}
|
||||
sup{top:-.5em}
|
||||
sub{bottom:-.25em}
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||||
img{border:0}
|
||||
svg:not(:root){overflow:hidden}
|
||||
figure{margin:0}
|
||||
fieldset{border:1px solid silver;margin:0 2px;padding:.35em .625em .75em}
|
||||
legend{border:0;padding:0}
|
||||
button,input,select,textarea{font-family:inherit;font-size:100%;margin:0}
|
||||
button,input{line-height:normal}
|
||||
button,select{text-transform:none}
|
||||
button,html input[type="button"],input[type="reset"],input[type="submit"]{-webkit-appearance:button;cursor:pointer}
|
||||
button[disabled],html input[disabled]{cursor:default}
|
||||
input[type="checkbox"],input[type="radio"]{box-sizing:border-box;padding:0}
|
||||
input[type="search"]{-webkit-appearance:textfield;-moz-box-sizing:content-box;-webkit-box-sizing:content-box;box-sizing:content-box}
|
||||
input[type="search"]::-webkit-search-cancel-button,input[type="search"]::-webkit-search-decoration{-webkit-appearance:none}
|
||||
button::-moz-focus-inner,input::-moz-focus-inner{border:0;padding:0}
|
||||
textarea{overflow:auto;vertical-align:top}
|
||||
table{border-collapse:collapse;border-spacing:0}
|
||||
*,*:before,*:after{-moz-box-sizing:border-box;-webkit-box-sizing:border-box;box-sizing:border-box}
|
||||
html,body{font-size:100%}
|
||||
body{background:#fff;color:rgba(0,0,0,.8);padding:0;margin:0;font-family:"Noto Serif","DejaVu Serif",serif;font-weight:400;font-style:normal;line-height:1;position:relative;cursor:auto}
|
||||
a:hover{cursor:pointer}
|
||||
img,object,embed{max-width:100%;height:auto}
|
||||
object,embed{height:100%}
|
||||
img{-ms-interpolation-mode:bicubic}
|
||||
.left{float:left!important}
|
||||
.right{float:right!important}
|
||||
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|
||||
</style>
|
||||
</head>
|
||||
<body class="article">
|
||||
<div id="header">
|
||||
<h1>Spring Cloud Function</h1>
|
||||
</div>
|
||||
<div id="content">
|
||||
<div id="preamble">
|
||||
<div class="sectionbody">
|
||||
<div class="paragraph">
|
||||
<p>Mark Fisher, Dave Syer</p>
|
||||
</div>
|
||||
<hr>
|
||||
</div>
|
||||
</div>
|
||||
<div class="sect1">
|
||||
<h2 id="_introduction">Introduction</h2>
|
||||
<div class="sectionbody">
|
||||
<div class="paragraph">
|
||||
<p>Spring Cloud Function is a project with the following high-level goals:</p>
|
||||
</div>
|
||||
<div class="ulist">
|
||||
<ul>
|
||||
<li>
|
||||
<p><em>Promote the implementation of business logic via functions.</em></p>
|
||||
</li>
|
||||
<li>
|
||||
<p><em>Decouple the development lifecycle of business logic from any specific runtime target so that the same code can run as a web endpoint, a stream processor, or a task.</em></p>
|
||||
</li>
|
||||
<li>
|
||||
<p><em>Support a uniform programming model across serverless providers, as well as the ability to run standalone (locally or in a PaaS).</em></p>
|
||||
</li>
|
||||
<li>
|
||||
<p><em>Enable Spring Boot features (auto-configuration, dependency injection, metrics) on serverless providers.</em></p>
|
||||
</li>
|
||||
</ul>
|
||||
</div>
|
||||
<div class="paragraph">
|
||||
<p>It abstracts away all of the transport details and
|
||||
infrastructure, allowing the developer to keep all the familiar tools
|
||||
and processes, and focus firmly on business logic.</p>
|
||||
</div>
|
||||
<div class="paragraph">
|
||||
<p>Here’s a complete, executable, testable Spring Boot application
|
||||
(implementing a simple string manipulation):</p>
|
||||
</div>
|
||||
<div class="listingblock">
|
||||
<div class="content">
|
||||
<pre class="prettyprint highlight"><code class="language-java" data-lang="java">@SpringBootApplication
|
||||
public class Application {
|
||||
|
||||
@Bean
|
||||
public Function<Flux<String>, Flux<String>> uppercase() {
|
||||
return flux -> flux.map(value -> value.toUpperCase());
|
||||
}
|
||||
|
||||
public static void main(String[] args) {
|
||||
SpringApplication.run(Application.class, args);
|
||||
}
|
||||
}</code></pre>
|
||||
</div>
|
||||
</div>
|
||||
<div class="paragraph">
|
||||
<p>It’s just a Spring Boot application, so it can be built, run and
|
||||
tested, locally and in a CI build, the same way as any other Spring
|
||||
Boot application. The <code>Function</code> is from <code>java.util</code> and <code>Flux</code> is a
|
||||
<a href="http://www.reactive-streams.org/">Reactive Streams</a> <code>Publisher</code> from
|
||||
<a href="https://projectreactor.io/">Project Reactor</a>. The function can be
|
||||
accessed over HTTP or messaging.</p>
|
||||
</div>
|
||||
<div class="paragraph">
|
||||
<p>Spring Cloud Function has 4 main features:</p>
|
||||
</div>
|
||||
<div class="olist arabic">
|
||||
<ol class="arabic">
|
||||
<li>
|
||||
<p>Wrappers for <code>@Beans</code> of type <code>Function</code>, <code>Consumer</code> and
|
||||
<code>Supplier</code>, exposing them to the outside world as either HTTP
|
||||
endpoints and/or message stream listeners/publishers with RabbitMQ, Kafka etc.</p>
|
||||
</li>
|
||||
<li>
|
||||
<p>Compiling strings which are Java function bodies into bytecode, and
|
||||
then turning them into <code>@Beans</code> that can be wrapped as above.</p>
|
||||
</li>
|
||||
<li>
|
||||
<p>Deploying a JAR file containing such an application context with an
|
||||
isolated classloader, so that you can pack them together in a single
|
||||
JVM.</p>
|
||||
</li>
|
||||
<li>
|
||||
<p>Adapters for <a href="https://github.com/markfisher/spring-cloud-function/tree/master/spring-cloud-function-adapters/spring-cloud-function-adapter-aws">AWS Lambda</a>, <a href="https://github.com/markfisher/spring-cloud-function/tree/master/spring-cloud-function-adapters/spring-cloud-function-adapter-openwhisk">Apache OpenWhisk</a> and possibly other "serverless" service providers.</p>
|
||||
</li>
|
||||
</ol>
|
||||
</div>
|
||||
<div class="admonitionblock note">
|
||||
<table>
|
||||
<tr>
|
||||
<td class="icon">
|
||||
<div class="title">Note</div>
|
||||
</td>
|
||||
<td class="content">
|
||||
Spring Cloud is released under the non-restrictive Apache 2.0 license. If you would like to contribute to this section of the documentation or if you find an error, please find the source code and issue trackers in the project at <a href="https://github.com/spring-cloud/spring-cloud-function/tree/master/docs/src/main/asciidoc">github</a>.
|
||||
</td>
|
||||
</tr>
|
||||
</table>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
<div class="sect1">
|
||||
<h2 id="_getting_started">Getting Started</h2>
|
||||
<div class="sectionbody">
|
||||
<div class="paragraph">
|
||||
<p>Build from the command line (and "install" the samples):</p>
|
||||
</div>
|
||||
<div class="listingblock">
|
||||
<div class="content">
|
||||
<pre>$ ./mvnw clean install</pre>
|
||||
</div>
|
||||
</div>
|
||||
<div class="paragraph">
|
||||
<p>(If you like to YOLO add <code>-DskipTests</code>.)</p>
|
||||
</div>
|
||||
<div class="paragraph">
|
||||
<p>Run one of the samples, e.g.</p>
|
||||
</div>
|
||||
<div class="listingblock">
|
||||
<div class="content">
|
||||
<pre>$ java -jar spring-cloud-function-samples/spring-cloud-function-sample/target/*.jar</pre>
|
||||
</div>
|
||||
</div>
|
||||
<div class="paragraph">
|
||||
<p>This runs the app and exposes its functions over HTTP, so you can
|
||||
convert a string to uppercase, like this:</p>
|
||||
</div>
|
||||
<div class="listingblock">
|
||||
<div class="content">
|
||||
<pre>$ curl -H "Content-Type: text/plain" localhost:8080/uppercase -d Hello
|
||||
HELLO</pre>
|
||||
</div>
|
||||
</div>
|
||||
<div class="paragraph">
|
||||
<p>You can convert multiple strings (a <code>Flux<String></code>) by separating them
|
||||
with new lines</p>
|
||||
</div>
|
||||
<div class="listingblock">
|
||||
<div class="content">
|
||||
<pre>$ curl -H "Content-Type: text/plain" localhost:8080/uppercase -d 'Hello
|
||||
> World'
|
||||
HELLOWORLD</pre>
|
||||
</div>
|
||||
</div>
|
||||
<div class="paragraph">
|
||||
<p>(You can use <code><sup>Q</sup>J</code> in a terminal to insert a new line in a literal
|
||||
string like that.)</p>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
<div class="sect1">
|
||||
<h2 id="_building_and_running_a_function">Building and Running a Function</h2>
|
||||
<div class="sectionbody">
|
||||
<div class="paragraph">
|
||||
<p>The sample <code>@SpringBootApplication</code> above has a function that can be
|
||||
decorated at runtime by Spring Cloud Function to be an HTTP endpoint,
|
||||
or a Stream processor, for instance with RabbitMQ, Apache Kafka or
|
||||
JMS.</p>
|
||||
</div>
|
||||
<div class="paragraph">
|
||||
<p>The <code>@Beans</code> can be <code>Function</code>, <code>Consumer</code> or <code>Supplier</code> (all from
|
||||
<code>java.util</code>), and their parametric types can be String or POJO. A
|
||||
<code>Function</code> is exposed as an HTTP POST if <code>spring-cloud-function-web</code>
|
||||
is on the classpath, and as a Spring Cloud Stream <code>Processor</code> if
|
||||
<code>spring-cloud-function-stream</code> is on the classpath and a
|
||||
<code>spring.cloud.function.stream.endpoint</code> property is configured in the Spring
|
||||
environment. A <code>Consumer</code> is also exposed as an HTTP POST, or as a Stream
|
||||
<code>Sink</code>. A <code>Supplier</code> translates to an HTTP GET, or a Stream <code>Source</code>.</p>
|
||||
</div>
|
||||
<div class="paragraph">
|
||||
<p>Functions can be of <code>Flux<String></code> or <code>Flux<Pojo></code> and Spring Cloud
|
||||
Function takes care of converting the data to and from the desired
|
||||
types, as long as it comes in as plain text or (in the case of the
|
||||
POJO) JSON. TBD: support for <code>Flux<Message<Pojo>></code> and maybe plain
|
||||
<code>Pojo</code> types (Fluxes implied and implemented by the framework).</p>
|
||||
</div>
|
||||
<div class="paragraph">
|
||||
<p>Functions can be grouped together in a single application, or deployed
|
||||
one-per-jar. It’s up to the developer to choose. An app with multiple
|
||||
functions can be deployed multiple times in different "personalities",
|
||||
exposing different functions over different physical transports.</p>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
<div class="sect1">
|
||||
<h2 id="_deploying_a_packaged_function">Deploying a Packaged Function</h2>
|
||||
<div class="sectionbody">
|
||||
<div class="paragraph">
|
||||
<p>TBD: describe the deployer app.</p>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
<div class="sect1">
|
||||
<h2 id="_dynamic_compilation">Dynamic Compilation</h2>
|
||||
<div class="sectionbody">
|
||||
<div class="paragraph">
|
||||
<p>To run these examples, change into the <code>scripts</code> directory:</p>
|
||||
</div>
|
||||
<div class="listingblock">
|
||||
<div class="content">
|
||||
<pre>cd scripts</pre>
|
||||
</div>
|
||||
</div>
|
||||
<div class="paragraph">
|
||||
<p>Also, start a RabbitMQ server locally (e.g. execute <code>rabbitmq-server</code>).</p>
|
||||
</div>
|
||||
<div class="sect2">
|
||||
<h3 id="_start_the_function_registry_service">Start the Function Registry Service:</h3>
|
||||
<div class="listingblock">
|
||||
<div class="content">
|
||||
<pre>./function-registry.sh</pre>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
<div class="sect2">
|
||||
<h3 id="_register_a_function">Register a Function:</h3>
|
||||
<div class="listingblock">
|
||||
<div class="content">
|
||||
<pre>./registerFunction.sh -n uppercase -f "f->f.map(s->s.toString().toUpperCase())"</pre>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
<div class="sect2">
|
||||
<h3 id="_run_a_rest_microservice_using_that_function">Run a REST Microservice using that Function:</h3>
|
||||
<div class="listingblock">
|
||||
<div class="content">
|
||||
<pre>./web.sh -f uppercase -p 9000
|
||||
curl -H "Content-Type: text/plain" -H "Accept: text/plain" localhost:9000/uppercase -d foo</pre>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
<div class="sect2">
|
||||
<h3 id="_register_a_supplier">Register a Supplier:</h3>
|
||||
<div class="listingblock">
|
||||
<div class="content">
|
||||
<pre>./registerSupplier.sh -n words -f "()->Flux.just(\"foo\",\"bar\")"</pre>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
<div class="sect2">
|
||||
<h3 id="_run_a_rest_microservice_using_that_supplier">Run a REST Microservice using that Supplier:</h3>
|
||||
<div class="listingblock">
|
||||
<div class="content">
|
||||
<pre>./web.sh -s words -p 9001
|
||||
curl -H "Accept: application/json" localhost:9001/words</pre>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
<div class="sect2">
|
||||
<h3 id="_register_a_consumer">Register a Consumer:</h3>
|
||||
<div class="listingblock">
|
||||
<div class="content">
|
||||
<pre>./registerConsumer.sh -n print -t String -f "System.out::println"</pre>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
<div class="sect2">
|
||||
<h3 id="_run_a_rest_microservice_using_that_consumer">Run a REST Microservice using that Consumer:</h3>
|
||||
<div class="listingblock">
|
||||
<div class="content">
|
||||
<pre>./web.sh -c print -p 9002
|
||||
curl -X POST -H "Content-Type: text/plain" -d foo localhost:9002/print</pre>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
<div class="sect2">
|
||||
<h3 id="_run_stream_processing_microservices">Run Stream Processing Microservices:</h3>
|
||||
<div class="paragraph">
|
||||
<p>First register a streaming words supplier:</p>
|
||||
</div>
|
||||
<div class="listingblock">
|
||||
<div class="content">
|
||||
<pre>./registerSupplier.sh -n wordstream -f "()->Flux.intervalMillis(1000).map(i->\"message-\"+i)"</pre>
|
||||
</div>
|
||||
</div>
|
||||
<div class="paragraph">
|
||||
<p>Then start the source (supplier), processor (function), and sink (consumer) apps
|
||||
(in reverse order):</p>
|
||||
</div>
|
||||
<div class="listingblock">
|
||||
<div class="content">
|
||||
<pre>./stream.sh -p 9103 -i uppercaseWords -c print
|
||||
./stream.sh -p 9102 -i words -f uppercase -o uppercaseWords
|
||||
./stream.sh -p 9101 -s wordstream -o words</pre>
|
||||
</div>
|
||||
</div>
|
||||
<div class="paragraph">
|
||||
<p>The output will appear in the console of the sink app (one message per second, converted to uppercase):</p>
|
||||
</div>
|
||||
<div class="listingblock">
|
||||
<div class="content">
|
||||
<pre>MESSAGE-0
|
||||
MESSAGE-1
|
||||
MESSAGE-2
|
||||
MESSAGE-3
|
||||
MESSAGE-4
|
||||
MESSAGE-5
|
||||
MESSAGE-6
|
||||
MESSAGE-7
|
||||
MESSAGE-8
|
||||
MESSAGE-9
|
||||
...</pre>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/prettify/r298/prettify.min.css">
|
||||
<script src="https://cdnjs.cloudflare.com/ajax/libs/prettify/r298/prettify.min.js"></script>
|
||||
<script>prettyPrint()</script>
|
||||
</body>
|
||||
</html>
|
||||
Reference in New Issue
Block a user