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Makefile
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# --------------------------------------------------------------------
# Copyright (c) 2020 Anthony Potappel - LINKIT, The Netherlands.
# SPDX-License-Identifier: MIT
# --------------------------------------------------------------------
# This file is auto-generated from: tools/cfn-makefile
# Manual changes are overwritten at each update
# --------------------------------------------------------------------
SHELL := /bin/bash
NAME := CloudFormation Makefile
VERSION := 0.92-1580468200300
DATE := 2020-01-31T10:56:40.299912+00:00
# profile=
_AWS_PROFILE = \
$(if $(profile),$(profile),$(if $(AWS_PROFILE),$(AWS_PROFILE),default))
_GIT_REPOSITORY = $(if $(git),$(git),)
.PHONY: help
help: show_help
@# target: help
.PHONY: deploy
deploy: set_environment pre_process stack post_process
@# target: deploy
@# main target, deploy or update a stack via dependency targets:
@# set_environment, pre_process, stack and post_process
@echo Deployed succesfully: $(_DEPLOYSTACK)
.PHONY: stack
stack: read_configuration package
@# target: stack
@# ensure configuration is read, and stack is packaged
@# then deploys stack via AWS CLI
@# verify if Configuration Outputs are complete and non-empty
@([ ! -z $(ArtifactBucket) ] && [ ! -z $(IAMServiceRole) ]) || \
(echo "Configuration Outputs incomplete"; exit 1)
@# deploy Stack -- include parameters.ini if file exists
( \
[ -s "$(_BUILDDIR)"/parameters.ini ] && \
params=--parameter-overrides\ $$(cat "$(_BUILDDIR)"/parameters.ini); \
aws cloudformation deploy \
--profile $(_AWS_PROFILE) \
--stack-name $(_DEPLOYSTACK) \
--role-arn $(IAMServiceRole) \
--template-file $(_BUILDDIR)/template.yaml \
--capabilities CAPABILITY_IAM CAPABILITY_NAMED_IAM CAPABILITY_AUTO_EXPAND \
--tags \
_CONFIGSTACK="$(_CONFIGSTACK)" \
_GIT_REPOSITORY="$(if $(_GIT_REPOSITORY),$(_GIT_REPOSITORY),None)" \
$${params} \
)
.PHONY: set_workdir
set_workdir:
@# target: set_workdir
@# setup a workingspace in ${PATH_OF_THIS_MAKEFILE}/.build
$(eval _WORKDIR = $(shell \
cd $$(dirname "$${BASH_SOURCE[0]}" || echo ".") && pwd || echo ""))
@[ -d .build ] || mkdir .build
@tmpfile=.build/tmpfile; \
cat <<< "$${GIT_IGNORE}" >$${tmpfile}; \
sh $${tmpfile}; \
rm $${tmpfile}
@cat <<< "$${CFN_FUNCTIONS}" >.build/cfn_functions.sh
@cat <<< "$${GIT_FUNCTIONS}" >.build/git_functions.sh
.PHONY: set_environment_local
set_environment_local: set_workdir
@# target: set_environment_local
@# _TEMPLATE points to a CloudFormation Template -- typically a Rootstack
@# set by passing template=${path} -- defaults to template.yaml
@# _TEMPLATE_ROOT points to the directory where _TEMPLATE is located
$(eval _TEMPLATE = $(if $(template),$(template),template.yaml))
$(eval _TEMPLATE_ROOT = $(shell dirname "$(_TEMPLATE)"))
ifneq ($(_GIT_REPOSITORY),)
@# if git=${repository} is passed, pull from repository into .build/_GIT_ROOT
@# can be used together with template={path} -- ${path} starts from _GIT_ROOT
$(git-env) pull_from_git "$(_GIT_REPOSITORY)" "$(_WORKDIR)"
$(eval _GIT_ROOT = $(shell \
$(git-env) printf "$$(git_namestring "$(_GIT_REPOSITORY)" "$(_WORKDIR)")" \
))
$(if $(_GIT_ROOT),,$(error _GIT_ROOT))
@# reconstruct _TEMPLATE_ROOT by putting _GIT_ROOT in front of it
@# if no template={path} is given the latter (shell printf) part must be empty
# feed_GIT_COMMIT to derive_stackname so it can be pushed to the end
$(eval _TEMPLATE_ROOT = .build/$(_GIT_ROOT)$(shell \
printf "$$(printf "$(_TEMPLATE_ROOT)" \
|sed 's/^[\/]*/\//g;s/^[\/\.]*$$//g')" \
))
@# idem. to _TEMPLATE
$(eval _TEMPLATE = $(_TEMPLATE_ROOT)/$(shell \
basename "$(_TEMPLATE)"))
endif
.PHONY: set_environment_aws
set_environment_aws: set_workdir set_environment_local
@# target: set_environment_aws
@# define name of _DEPLOYSTACK and _CONFIGSTACK based on _USERID and template
@# location (_TEMPLATE_ROOT). If sourced from GIT, append branchname and commit
@# get last 8 chars of USERID
$(eval _USERID = $(if $(userid),$(userid),$(shell \
aws sts get-caller-identity \
--query UserId \
--output text \
--profile "$(_AWS_PROFILE)" \
|sed 's/:.*//g;s/None//g;s/[^a-zA-Z0-9_]//g' \
|awk '{print substr($$0,length($$0) - 7,8)}' \
)))
$(if $(_USERID),,$(error _USERID))
@# if stackname={} option is passed: use this name for DEPLOYSTACK
@# else derive stackname from TEMPLATE_ROOT
$(eval _DEPLOYSTACK = $(if $(stackname),$(stackname),$(shell \
$(cfn-env) derive_stackname "$(_TEMPLATE_ROOT)" "$(_GIT_ROOT)" "$(_WORKDIR)" "$(_USERID)" \
)))
$(if $(_DEPLOYSTACK),,$(error _DEPLOYSTACK))
$(eval _BUILDDIR = .build/$(_DEPLOYSTACK))
$(eval _CONFIGSTACK = ConfigStack-$(_USERID))
@[ -d $(_BUILDDIR) ] || mkdir $(_BUILDDIR)
.PHONY: set_environment
set_environment: set_environment_local set_environment_aws
@# target: set_environment
@# wrapper to set local and aws environment via dependency rules
@# note: keep three separate targets to ensure ordering is enforced
.PHONY: package
package: set_environment
@# target: package
@# package CloudFormation (nested) Stacks and Lambdas
aws cloudformation package \
--profile $(_AWS_PROFILE) \
--template-file $(_TEMPLATE) \
--s3-bucket $(ArtifactBucket) \
--s3-prefix $(_DEPLOYSTACK) \
--output-template-file $(_BUILDDIR)/template.yaml
.PHONY: pre_process
pre_process: set_environment read_configuration
@# target: pre_process
@# calls ./pre_process.sh
@# parameters.ini is sourced from _BUILDDIR as it may be auto-generated
@# only copy when source is an update
[ ! -s "$(_TEMPLATE_ROOT)"/parameters.ini ] || \
(cp -u "$(_TEMPLATE_ROOT)"/parameters.ini "$(_BUILDDIR)/parameters.ini")
@# run pre_process.sh if it exist
[ ! -s "$(_TEMPLATE_ROOT)/pre_process.sh" ] || \
( \
cd "$(_TEMPLATE_ROOT)" && \
export AWS_PROFILE=$(_AWS_PROFILE); \
export CONFIGURATION_BUCKET=$(ArtifactBucket); \
export STACKNAME=$(_DEPLOYSTACK); \
export BUILDDIR=$(_WORKDIR)/$(_BUILDDIR); \
echo "RUNSCRIPT:$(_TEMPLATE_ROOT)/pre_process.sh"; \
bash ./pre_process.sh; \
exit_code="$$?"; \
echo "FINISHED:$(_TEMPLATE_ROOT)/pre_process.sh (exit=$${exit_code})"; \
exit $${exit_code}; \
)
.PHONY: post_process
post_process: set_environment read_configuration
@# target: post_process
@# exports Stack Outputs to environment
@# calls ./post_process.sh
$(eval _STACK_OUTPUTS = $(shell \
aws cloudformation describe-stacks \
--profile $(_AWS_PROFILE) \
--stack-name $(_DEPLOYSTACK) \
--query 'Stacks[0].Outputs[].{OutputKey:OutputKey,OutputValue:OutputValue}' \
--output text 2>/dev/null |awk -F '\t' '{print $$1"="$$2}' |sed 's/^None=$$//g'; \
))
[ ! -s "$(_TEMPLATE_ROOT)/post_process.sh" ] || \
( \
cd "$(_TEMPLATE_ROOT)" && \
export AWS_PROFILE=$(_AWS_PROFILE); \
export CONFIGURATION_BUCKET=$(ArtifactBucket); \
export STACKNAME=$(_DEPLOYSTACK); \
export BUILDDIR=$(_WORKDIR)/$(_BUILDDIR); \
[ ! -z "$(_STACK_OUTPUTS)" ] && export $(_STACK_OUTPUTS); \
echo "RUNSCRIPT:$(_TEMPLATE_ROOT)/post_process.sh"; \
bash ./post_process.sh; \
exit_code="$$?"; \
echo "FINISHED:$(_TEMPLATE_ROOT)/post_process.sh (exit=$${exit_code})"; \
exit $${exit_code}; \
)
.PHONY: init_configuration
init_configuration: set_environment
@# target: init_configuration
@# deploy Configuration Stack if no matching version is found,
@# determined by output check on ArtifactBucket.
@# init is skipped with noconfig=true variable set when called via make clean
ifneq ($(noconfig),true)
$(cfn-env) \
create_configuration_template || exit 1; \
output=$$(configstack_output $(_CONFIGSTACK) "ArtifactBucket" || true); \
[ ! -z $${output} ] || \
aws cloudformation deploy \
--profile $(_AWS_PROFILE) \
--no-fail-on-empty-changeset \
--template-file .build/configstack.yaml \
--capabilities CAPABILITY_NAMED_IAM \
--stack-name $(_CONFIGSTACK) \
--parameter-overrides \
RoleName=ConfigStackDeployRole-$(_USERID)
endif
.PHONY: read_configuration
read_configuration: init_configuration
@# target: read_configuration
@# retrieve configuration vars ArtifactBucket and IAMServiceRole,
@# set vars in Makefile environment so other targets can access them
$(eval ArtifactBucket = $(shell \
$(cfn-env) printf $$(configstack_output $(_CONFIGSTACK) ArtifactBucket) \
))
$(if $(ArtifactBucket),,$(error ConfigStack missing parameter: ArtifactBucket))
$(eval IAMServiceRole = $(shell \
$(cfn-env) printf $$(configstack_output $(_CONFIGSTACK) IAMServiceRole) \
))
$(if $(IAMServiceRole),,$(error ConfigStack missing parameter: IAMServiceRole))
.PHONY: delete
delete: set_environment read_configuration
@# target=delete:
@# get IAMServiceRole (supplied by Configuration Stack) and delete stack
@# if no Configuration Stack exists, one is created (init_configuration)
@$(cfn-env) delete_stack $(_DEPLOYSTACK) $(IAMServiceRole)
@echo Stack is Deleted: $(_DEPLOYSTACK)
.PHONY: delete_full
delete_full: delete
@# target=delete_full
@# calls delete target via dependency
@# removes Configuration Stack and .build dir
@if [ -z "$(ArtifactBucket)" ] && [ -z "$(IAMServiceRole)" ];then \
echo "Nothing to erase"; \
else \
$(cfn-env) delete_stack_configuration "$(_CONFIGSTACK)"; \
echo Stack and Configuration are Deleted: $(_DEPLOYSTACK); \
fi
.PHONY: clean
clean:
@# target=clean:
@# delete local ./.build directory
@# add stack=$${DIRECTORY} to also delete stack data
# Note that configstack cant be deleted as long as there is one stack
#ifneq ($(_TEMPLATE),)
@# if either _TEMPLATE or _GIT_REPOSITORY is set, do full stack delete
ifneq ($(filter %,$(_TEMPLATE) $(_GIT_REPOSITORY)),)
make -f "$(lastword $(MAKEFILE_LIST))" delete_full \
git="$(_GIT_REPOSITORY)" \
template="$(_TEMPLATE)" \
noconfig="true"
endif
rm -rf ./.build
.PHONY: pre
pre: pre_process
@# target=pre:
@# calls target pre_process
@echo PreProcess ran succesfully: $(_TEMPLATE_ROOT)/pre_process.sh
.PHONY: post
post: post_process
@# target=post:
@# calls target post_process
@echo PostProcess ran succesfully: $(_TEMPLATE_ROOT)/post_process.sh
@[ -z "$(_STACK_OUTPUTS)" ] || \
( \
echo -e "\e[92mStackOutputs":; \
for output in $(_STACK_OUTPUTS);do \
echo -e "\e[37m$$(printf $${output} |sed 's/=/\ =\ /g')"; \
done \
)
.PHONY: list
list: set_environment_aws
@# target=list
@# iterate over list with describe
aws cloudformation list-stacks \
--profile $(_AWS_PROFILE) \
--no-paginate --query \
'StackSummaries[?StackStatus!=`DELETE_COMPLETE`] | [?ParentId==`null`] | [?starts_with(StackName,`$(_USERID)-`)].StackName' \
--output text
.PHONY: build
build: set_workdir
ifeq ($(mode),write)
ifeq ($(path),)
@echo 'path=$${PATH} is mandatory for build target'
else
@echo 'Create path=$(path)'
$(git-env) git_merge_include "$(path)"
endif
else
@echo 'SAFETYCHECK: to prevent running this by accident, append mode=write'
endif
.PHONY: whoami
whoami:
@# target=whoami:
@# verify AWS profile used by this Makefile
aws sts get-caller-identity --profile "$(_AWS_PROFILE)"
.PHONY: version
version:
@# target=version:
@echo Version=$(VERSION)
.PHONY: license
license: version
@# target=license:
@echo License notice:
@cat <<< "$${LICENSE}"
.PHONY: check
check: set_environment
@echo workdir=$(_WORKDIR)
@echo templateroot=$(_TEMPLATE_ROOT)
@echo configstack=$(_CONFIGSTACK)
@echo deploystack=$(_DEPLOYSTACK)
@echo template=$(_TEMPLATE)
@echo TODO List:
@echo "- (continuous) -- refactor and improve doc-strings"
@echo "- make clean should delete all related stacks, determined by: make list"
@echo "- clean s3 config folder as part of stack delete"
@echo "- if stack is protected, skip deletion (vs. giving an error now)"
@echo "- test, with cfn-python-lint"
@echo "- check if tools exist on host, e.g. git and cfn-python-lint -- or error"
$(git-env) error_test "$(_TEMPLATE_ROOT)" "$(_WORKDIR)"
export CFN_FUNCTIONS
export GIT_FUNCTIONS
export GIT_IGNORE
export LICENSE
define cfn-env
source .build/cfn_functions.sh; \
export AWS_PROFILE=$(_AWS_PROFILE); \
exit_on_error
endef
define git-env
source .build/git_functions.sh; \
exit_on_error
endef
define CFN_FUNCTIONS
# repetively called shell functions are added here, contents are exported
# to environment and written to file, and sourced via cfn-env.
#
# vars set via Makefile: _AWS_PROFILE, _STACKNAME_CONFIG, _STACKNAME,
# _REPOSITORY, _WORKDIR
#!/bin/bash
set -o pipefail
function exit_on_error(){
"$$@"
local ret=$$?
if [ ! $$ret -eq 0 ];then
>&2 echo "ERROR: Command [ $$@ ] returned $$ret"
exit $$ret
fi
}
function configstack_output(){
# retrieve output value by passing name of OutputKey as input argument
# input: {STACKNAME} {KEY}
aws cloudformation describe-stacks \
--profile $${AWS_PROFILE} \
--stack-name "$${1}" \
--query 'Stacks[0].Outputs[?OutputKey==`'$${2}'`].OutputValue' \
--output text 2>/dev/null || return $$?
}
function stack_status(){
# retrieve status of stack by passing unique stack-name as input argument
# input: {STACKNAME}
aws cloudformation list-stacks \
--profile $${AWS_PROFILE} \
--no-paginate \
--query 'StackSummaries[?StackName==`'$${1}'`].[StackStatus][0]' \
--output text
return $$?
}
function stack_delete_waiter(){
# configure waiter for stack deletion by passing stack-name as input argument
# allow up to ~15 minutes for stack deletion
# if more time is needed, re-check architecture before raising timeout
local max_rounds=300
local seconds_per_round=3
local round=0
while [ $${round} -lt $${max_rounds} ];do
local stack_status=$$(stack_status "$${1}")
echo "WAITER ($${round}/$${max_rounds}):$${1}:$${stack_status}"
case "$${stack_status}" in
DELETE_COMPLETE) return 0;;
*_FAILED) return 1;;
*_IN_PROGRESS|*_COMPLETE);;
*) echo "Stack not found"; return 0;;
esac
local round=$$[$${round}+1]
sleep $${seconds_per_round}
done
return 1
}
function delete_stack(){
# delete stack -- role_arn should be passed as input argument
# input: {STACKNAME} {ROLE_ARN}
#role_arn="$${1}"
# return direct ok if application stack is deleted, or not found
local stack_status=$$(stack_status "$${1}")
[ -z "$${stack_status}" ] && return 0
[ "$${stack_status}" == "DELETE_COMPLETE" ] \
|| [ "$${stack_status}" == "None" ] && return 0
aws cloudformation delete-stack --profile $${AWS_PROFILE} \
--stack-name "$${1}" \
--role-arn "$${2}"
stack_delete_waiter "$${1}"
return $$?
}
function delete_stack_configuration(){
# delete stack_configuration and wait -- no input arguments
# input: {CONFIGSTACK}
aws cloudformation delete-stack --profile $${AWS_PROFILE} \
--stack-name "$${1}"
stack_delete_waiter "$${1}"
return $$?
}
function derive_stackname(){
# derive stackname from name of template directory/ repository
# input: {_TEMPLATE_ROOT} {_GIT_ROOT} {_WORKDIR} {_USERID}
# use _TEMPLATE_ROOT and strip of leading and trailing slashes
# select last, or last two (directory-name) columns
# if result leads to "." (=working directory): use its name
# dirname "/pg/abc/def/template.yaml" |sed 's/^\///g;s/\/$$//g' | awk -F '/' '{print NF == 1 ? $$NF : $$(NF - 1)"/"$$(NF)}'
# UserID{8}-Name{0:80}-Branch{29:*}-Commit{8:*}
# |awk -F '/' '{print NF == 1 ? $$1 : $$(NF - 1)"/"$$(NF)}'
if [ ! -z "$${2}" ];then
# if _GIT_ROOT is passed: _TEMPLATE_ROOT is GIT-based
# strip off commit -- this is (re-)appended to the end of the string in step_1
# this gives repositories with deep nested templates more human-readable names
branch_commit="$$(printf "$${2}" |awk -F "--" '{print $$2"--"$$3}')"
step_0="$$(\
printf "$${1}" |sed 's/--'$${branch_commit}'$$//g;s/--'$${branch_commit}'\///g'
)"
else
# no adjustments, define commit as empty string
branch_commit=""
step_0="$${1}"
fi
step_1="$$(\
printf "$${step_0}" \
|sed 's/^[\/\.]*//g;s/\/$$//g;s/^\.build\///g' \
|awk -F '/' '{
if ( NF == 0 );
else if ( NF == 1 ) print $$1;
else if ( NF == 2) print $$(NF - 1)"/"$$(NF);
else print $$1"_-_"$$(NF - 1)"/"$$(NF);}' \
)" || return $$?
if [ -z "$${step_1}" ];then
step_1=$$(basename "$${3}") || return $$?
fi
[ ! -z "$${branch_commit}" ] && step_1="$${step_1:0:80}-$${branch_commit}"
# remove non [a-zA-Z-] chars and leading/ trailing dash
# uppercase first char for cosmetics
step_2=$$(\
printf "$${step_1}" \
|sed 's/[^a-zA-Z0-9_]/-/g;s/-\+/-/g;s/^-//g;s/-$$//g;s/_-_/--/g' \
|awk '{for (i=1;i<=NF;i++) $$i=toupper(substr($$i,1,1)) substr($$i,2)} 1' \
) || return $$?
# if result from step_2 is empty: paste in Unknown-StackName
# elif char-length >127-9 (127=max naming length on AWS, 9=partial USERID + -)
# attain first 109, and last 8 chars (unique commitIDs), separated by double-dash
# ensure no leading or trailing dashes remain
# else no further modifications
if [ -z "$${step_2}" ];then
step_3="Unknown-StackName"
elif [ "$${#step_2}" -gt 119 ];then
step_3a=$$(\
printf $${step_2:0:109} \
|sed s'/^-//g;s/-$$//g' \
) || return $$?
step_3b=$$(\
printf $${step_2:$$(($${#step_2} - 8)):8} \
|sed s'/^-//g;s/-$$//g' \
) || return $$?
step_3=$${step_3a}--$${step_3b}
else
step_3="$${step_2}"
fi
# last 8 chars of USERID + result from step_3
printf "$${4}-$${step_3}"
return $$?
}
function create_configuration_template(){
cat << CONFIGURATION_STACK >./.build/configstack.yaml
AWSTemplateFormatVersion: 2010-09-09
Transform: AWS::Serverless-2016-10-31
Description: ConfigurationStack
Parameters:
RoleName:
Type: String
Resources:
Bucket:
Type: AWS::S3::Bucket
Properties:
VersioningConfiguration:
Status: Enabled
LifecycleConfiguration:
Rules:
- ExpirationInDays: 30
Status: Disabled
- NoncurrentVersionExpirationInDays: 7
Status: Enabled
BucketEncryption:
ServerSideEncryptionConfiguration:
- ServerSideEncryptionByDefault:
SSEAlgorithm: AES256
ServiceRoleForCloudFormation:
Type: AWS::IAM::Role
Properties:
RoleName: !Ref RoleName
AssumeRolePolicyDocument:
Statement:
- Effect: Allow
Principal:
Service:
- cloudformation.amazonaws.com
Action:
- sts:AssumeRole
Policies:
- PolicyName: AdministratorAccess
PolicyDocument:
Version: 2012-10-17
Statement:
- Effect: Allow
Action: "*"
Resource: "*"
BucketEmptyLambda:
Type: AWS::Serverless::Function
Properties:
Runtime: python3.7
Handler: index.handler
Policies:
- Version: 2012-10-17
Statement:
- Effect: Allow
Action:
- s3:List*
- s3:DeleteObject
- s3:DeleteObjectVersion
Resource:
- !Sub \$${Bucket.Arn}
- !Sub \$${Bucket.Arn}/*
InlineCode: |
import boto3
import cfnresponse
s3 = boto3.resource('s3')
def empty_s3(payload):
bucket = s3.Bucket(payload['BucketName'])
bucket.object_versions.all().delete()
return {}
def handler(event, context):
try:
if event['RequestType'] in ['Create', 'Update']:
# do nothing
cfnresponse.send(event, context, cfnresponse.SUCCESS,
{}, event['LogicalResourceId'])
elif event['RequestType'] in ['Delete']:
response = empty_s3(event['ResourceProperties'])
cfnresponse.send(event, context, cfnresponse.SUCCESS, response)
except Exception as e:
cfnresponse.send(event, context, "FAILED", {"Message": str(e)})
CustomCrlBucketEmpty:
Type: Custom::CrlBucketEmpty
Properties:
ServiceToken: !GetAtt BucketEmptyLambda.Arn
BucketName: !Ref Bucket
Outputs:
ArtifactBucket:
Value: !Ref Bucket
IAMServiceRole:
Value: !GetAtt ServiceRoleForCloudFormation.Arn
CONFIGURATION_STACK
}
endef
define GIT_FUNCTIONS
#!/bin/bash
set -o pipefail
INCLUDE_FILE='.git_include'
function error(){
>&2 echo "ERROR: $${1}"
# >&2 echo "TRACE: $${FUNCNAME[*]}" | awk '{ for(i=NF; i>1; i--) printf("%s:",$$i); print $$1;}'
return_code="$${2}"
[[ ! $${return_code} =~ ^[0-9]+$$ ]] && return_code=1
return $${return_code}
}
function exit_on_error(){
"$$@"
local ret=$$?
if [ ! $$ret -eq 0 ];then
>&2 echo "ERROR: Command [ $$@ ] returned $$ret"
exit $$ret
fi
}
function git_destination(){
# Return clean repository name -- filter out .git and any parameters
# input: {GIT_REPOSITORY} {WORKDIR}
local var=$$(
basename "$${1}" \
|sed 's/?.*//g;
s/\.git$$//g;
s/[^a-zA-Z0-9_-]//g'
)
# TODO: check if still needed
# if repository is a URL, lowercase
# urlcheck = sed -n '/^\(http\|ssh\)[s]\?:\/\/\|.*?.*/p'))
# convert the url part to lowercase to prevent input/ typo mistakes
# |awk '{print tolower($$0)}'
[ ! -z "$${var}" ] \
&& printf "$${var}" \
|| printf $$(basename "$${2}")
return $$?
}
function git_set_default_user(){
# set default git user/ email if none exist
# required to allow automated commits to build repositories
[ -z "$$(git config user.name)" ] \
&& git config user.name `whoami`
[ -z "$$(git config user.email)" ] \
&& git config user.email `whoami`@localhost
# assume success, if fail: git will stop-fail next
return 0
}
function git_auto_commit(){
# commit changes automatically
git_set_default_user
git add . \
&& (
git diff-index --quiet HEAD 2>/dev/null \
|| git commit -am "__auto_commit__:$$(date +%s)"
)
return $$?
}
function git_parameter(){
# extract parameter value from URL
local uri_str="$${1}"
local parameter_name="$${2}"
# pre-set default value
local parameter_value="$${3}"
read parameter_pair <<< $$(
sed -n 's/.*\('$${parameter_name}'=[A-Za-z0-9-]*\).*/\1/p' \
<<< "$${uri_str##*\?}"
) || return $$?
[ ! -z "$${parameter_pair}" ] &&
local parameter_value=$${parameter_pair#*=}
printf "$${parameter_value}"
return $$?
}
function git_namestring(){
# Return a string formatted as RepoName--Branch--Commit
local repository="$${1}"
local workdir="$${2}"
local rname="$$(git_destination "$${repository}" "$${workdir}")" || return $$?
local branch="$$(git_parameter "$${repository}" branch master)" || return $$?
local commit="$$(git_parameter "$${repository}" commit latest)" || return $$?
if [ "$${commit}" = 'latest' ];then
local heads=$$(git ls-remote "$${repository%\?*}" refs/heads/"$${branch}")
local commit=$$(printf "$${heads}" |awk '{print $$1}')
if [ -z "$${commit}" ];then
>&2 echo "ERROR: cant find branch \"$${branch}\" on \"$${repository%\?*}\""
return 1
fi
fi
printf "$${rname}--$${branch}--$${commit}"
return $$?
}
function pull_from_git(){
# pull repository and checkout to specified branch tag/commit
local origin="$${1}"
local workdir="$${2}"
local branch=$$(git_parameter "$${origin}" branch master) || return $$?
local target=.build/"$$(git_namestring "$${origin}" "$${workdir}")" || return $$?
# if repository exists local: fetch, else: clone
if [ -e "$${target}"/.git ];then
(
cd "$${target}" \
&& git fetch origin \
&& git reset --hard origin/master
) || return $$?
else
git clone -b "$${branch}" "$${origin%\?*}" "$${target}" \
|| return $$?
fi
# if _commit: checkout commit position, else: checkout latest
local commit=$$(git_parameter "$${origin}" commit) || return $$?
if [ ! -z "$${commit}" ] && [ "$${commit}" != 'latest' ];then
(
cd "$${target}" \
&& git checkout -B $${branch} $${commit} \
|| return $$?
)
else
(
cd "$${target}" \
&& git checkout -B $${branch} \
&& git pull \
|| return $$?
)
fi
return $$?
}
function git_update_remote_config(){
local remote="$${1}"
local repository="$${2}"
local exist=$$(
git remote |sed -n 's/\(^'$${remote}'$$\)/\1/p'
) || return $$?
# remove existing version if exist
if [ ! -z "$${exist}" ];then
git remote rm "$${remote}" || return $$?
fi
git remote add "$${remote}" "$${repository}"
return $$?
}
function git_delete_branch_if_exist(){
local branchname="$${1}"
if git show-ref --verify --quiet refs/heads/"$${branchname}";then
git branch -D "$${branchname}" || return $$?
fi
return 0
}
function git_set_ignore(){
[ -d .build ] || mkdir .build || return 1
cat << IGNORE_FILE_BUILD >.build/.gitignore
# ignore everything under build
# .build/* should only contain generated data
# this file is auto-generated by Makefile
*
IGNORE_FILE_BUILD
return $$?
}
function init_build_repo(){
# create a brand new repo
local directory="$${1}"
[ ! -d "$${directory}"/.git ] \
|| error "$${directory}/.git ALREADY EXISTS" $$? \
|| return $$?
mkdir -p "$${directory}" \
|| error "FAILED TO CREATE: $${directory}" $$? \
|| return $$?
cd "$${directory}" \
&& git init -q \
|| return $$?
if [ ! -z "$${2}" ] && [ "$$2" = 'commit' ];then
git_set_ignore \
&& git add -f .build/.gitignore >/dev/null \
&& git commit -q -am '__auto__Makefile:init__' \
&& git add . >/dev/null \
&& git commit -q -am '__auto__Makefile:xxxx__' \
|| return $$?
fi
printf "$${directory}"
return $$?
}
#&& git add . \
function git_extract_path(){
# extract path-contents from one repository to another
# pathmap='$${origin_path}:$${target_path}'
local pathmap="$${1}"
local origin_repo="$${2}"
local target_repo="$${3}"
# split pathmap in origin- and new path
local origin_path="$${pathmap%:*}"
local target_path="$${pathmap##*:}"
if [ -z "$${origin_path}" ] || [ -z "$${target_path}" ];then
error "FAILED READING PATHMAP \"$${pathmap}\""
return 1
fi
local workdir="$$(pwd)"
pull_from_git "$${origin_repo}" "$${workdir}" || return $$?
# ensure source repository is in original state
local source_name=$$(git_namestring "$${origin_repo}" "$${workdir}")
local source_repo="$${workdir}"/.build/"$${source_name}"
local source_branch=$$(git_parameter "$${source_repo}" branch master) || return $$?
# filter origin_path to a new (path-)branch in source repository
(
# ensure we are in the source_repo
cd "$${source_repo}" || return $$?
# verify commit. Var is also re-used later as unique var used to put files in
branchid="$$(
git log -n1 --pretty=format:%h -- "$${origin_path}"
)__$${target_path//\//-}"
[ -z "$${branchid}" ] && continue
# Create a clean orphan branch
git_delete_branch_if_exist "$${branchid}" \
&& git checkout --orphan "$${branchid}" \
&& git rm -qfr --cached --ignore-unmatch . \
&& git clean -qfd \
|| return $$?
# Merge $${origin_path} into orphan branch
git checkout "$${source_branch}" -- "$${origin_path}"/ \
|| return $$?
# ensure "$${target_path} is the only remaining directory
# complicated directory dance to make collission chance neglible
tmpdir=."$${branchid}"
mv "$${origin_path}" "$${tmpdir}" \
&& git rm -qfr --cached --ignore-unmatch . \
&& git clean -qf * \
&& mkdir -p "$$(dirname "$${target_path}")" \
&& mv "$${tmpdir}" "$${target_path}" \
&& git_auto_commit || return $$?
) || return $$?
# merge (path-)branch to build_repo
(
# merge branch
cd "$${target_repo}" \
&& git_update_remote_config "$${source_name}" "$${source_repo}" \
&& git pull --depth 1 "$${source_name}" "$${branchid}" \
--allow-unrelated-histories --no-edit -X theirs \
|| return $$?
git remote rm "$${source_name}"
) || return $$?
return 0
}
function git_merge_include(){
# process .git_include file and merge referenced repository-contents
path="$${1}"
if [ ! -z "$${path}" ];then
cd ./"$${path}" || error "CANT CHANGE TO PATH \"$${path}\"" $$? || return $$?
fi
# set GIT user if none is set. This is needed to enable commit functionality
# in non-developer environments (e.g. deployment pipelines)
git_set_default_user
if [ ! -d .git ];then
init_build_repo '.' 'commit' \
|| error 'FAILED TO INITIALISE GIT REPO' $$? || return $$?
fi
# retrieve section_names ([...]) from file
local section_names=$$(
sed 's/^\[//g;s/\]//g' <<< \
$$(sed -n 's/\(^\[[-A-Za-z0-9_.:/@?=&]*\]\)$$/\1/p' "$${INCLUDE_FILE}")
) || error 'FAILED READING SECTION NAMES' $$? || return $$?
# escape newlines (idea by: https://stackoverflow.com/questions/1251999)
local contents=$$(
sed -e ':a' -e 'N' -e '$$!ba' -e 's/\n/\\n/g' "$${INCLUDE_FILE}"
) || error 'FAILED READING CONTENTS' $$? || return $$?
# get clean working repository to initially store the pulls
local build_repo="$$(pwd)"/"$$(
init_build_repo ".build/temp-git-$$(($$(date +%s%N)/1000000))"
)" || error 'FAILED CREATING BUILD_REPO' $$? || return $$?
# iterate over sections
for name in $${section_names};do
(
# extract section block required for this iteration
section=$$(
sed 's/.*\(\['$${name}'\][^[]*\).*/\1/;
s/\\n/\n/g' <<< "$${contents}"
) || error "FAILED TO EXTRACT SECTION \"$${name}\"" $$? || return $$?
# extract repository=value
read repository_kv <<< $$(
sed -n 's/\(^repository=[-A-Za-z0-9:/.@?=&]*\)$$/\1/p' <<< "$${section}"
)
if [ ! $$? -eq 0 ] || [ -z "$${repository_kv#*=}" ];then
error "MISSING repository=[-A-Za-z0-9:/.@?=&]* IN \"$${name}\""
return 1
fi
# extract pathlist=value
# value: comma separated list of '$${source_path}:$${new_path}' pairs
# chars [-A-Za-z0-9_/.@=+] are safe to use for path-names
read pathlist_kv <<< $$(
sed -n 's/\(^pathlist=[-A-Za-z0-9:_/.@=+,]*\)$$/\1/p' <<< "$${section}"
)
if [ ! $$? -eq 0 ] || [ -z "$${pathlist_kv#*=}" ];then
error "MISSING pathlist=[-A-Za-z0-9:_/.@=+,]* IN \"$${name}\""
return 1
fi
# for each path in list, extract the contents to build_repo
# merge strategy is "-X theirs" -- i.e. each next path supersedes the former
pathlist_str="$${pathlist_kv#*=}"
for pathmap in $${pathlist_str//,/ };do
git_extract_path \
"$${pathmap}" "$${repository_kv#*=}" "$${build_repo}" \
|| error "FAILED TO PROCESS \"$${pathmap}\"" $$? || return $$?
done
) || return $$?
done
# Merge the contents of build_repo to working repository (/branch)
# merge strate is "-X ours" -- i.e. working repository supersedes build_repo
git_update_remote_config "final-merge" "$${build_repo}" || return $$?
git pull --depth 1 "final-merge" master --allow-unrelated-histories \
--no-edit -X ours || return $$?
# fetch only
# git fetch --depth 1 --no-tags --no-recurse-submodules final-merge master:my-new-branch
git remote rm final-merge || return $$?
# if .git is an auto-created sibling-git (i.e. temporary): clean it up
# determine by: