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194 lines
6.3 KiB
194 lines
6.3 KiB
1 year ago
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#!/usr/bin/env bash
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# Copyright 2020 Lingfei Kong <colin404@foxmail.com>. All rights reserved.
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# Use of this source code is governed by a MIT style
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# license that can be found in the LICENSE file.
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# shellcheck disable=SC2034 # Variables sourced in other scripts.
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# The server platform we are building on.
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readonly IAM_SUPPORTED_SERVER_PLATFORMS=(
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linux/amd64
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linux/arm64
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)
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# If we update this we should also update the set of platforms whose standard
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# library is precompiled for in build/build-image/cross/Dockerfile
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readonly IAM_SUPPORTED_CLIENT_PLATFORMS=(
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linux/amd64
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linux/arm64
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)
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# The set of server targets that we are only building for Linux
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# If you update this list, please also update build/BUILD.
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iam::golang::server_targets() {
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local targets=(
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iam-apiserver
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iam-authz-server
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iam-pump
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iam-watcher
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)
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echo "${targets[@]}"
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}
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IFS=" " read -ra IAM_SERVER_TARGETS <<< "$(iam::golang::server_targets)"
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readonly IAM_SERVER_TARGETS
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readonly IAM_SERVER_BINARIES=("${IAM_SERVER_TARGETS[@]##*/}")
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# The set of server targets we build docker images for
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iam::golang::server_image_targets() {
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# NOTE: this contains cmd targets for iam::build::get_docker_wrapped_binaries
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local targets=(
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cmd/iam-apiserver
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cmd/iam-authz-server
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cmd/iam-pump
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cmd/iam-watcher
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)
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echo "${targets[@]}"
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}
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IFS=" " read -ra IAM_SERVER_IMAGE_TARGETS <<< "$(iam::golang::server_image_targets)"
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readonly IAM_SERVER_IMAGE_TARGETS
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readonly IAM_SERVER_IMAGE_BINARIES=("${IAM_SERVER_IMAGE_TARGETS[@]##*/}")
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# ------------
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# NOTE: All functions that return lists should use newlines.
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# bash functions can't return arrays, and spaces are tricky, so newline
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# separators are the preferred pattern.
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# To transform a string of newline-separated items to an array, use iam::util::read-array:
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# iam::util::read-array FOO < <(iam::golang::dups a b c a)
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#
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# ALWAYS remember to quote your subshells. Not doing so will break in
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# bash 4.3, and potentially cause other issues.
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# ------------
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# Returns a sorted newline-separated list containing only duplicated items.
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iam::golang::dups() {
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# We use printf to insert newlines, which are required by sort.
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printf "%s\n" "$@" | sort | uniq -d
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}
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# Returns a sorted newline-separated list with duplicated items removed.
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iam::golang::dedup() {
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# We use printf to insert newlines, which are required by sort.
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printf "%s\n" "$@" | sort -u
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}
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# Depends on values of user-facing IAM_BUILD_PLATFORMS, IAM_FASTBUILD,
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# and IAM_BUILDER_OS.
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# Configures IAM_SERVER_PLATFORMS and IAM_CLIENT_PLATFORMS, then sets them
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# to readonly.
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# The configured vars will only contain platforms allowed by the
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# IAM_SUPPORTED* vars at the top of this file.
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declare -a IAM_SERVER_PLATFORMS
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declare -a IAM_CLIENT_PLATFORMS
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iam::golang::setup_platforms() {
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if [[ -n "${IAM_BUILD_PLATFORMS:-}" ]]; then
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# IAM_BUILD_PLATFORMS needs to be read into an array before the next
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# step, or quoting treats it all as one element.
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local -a platforms
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IFS=" " read -ra platforms <<< "${IAM_BUILD_PLATFORMS}"
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# Deduplicate to ensure the intersection trick with iam::golang::dups
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# is not defeated by duplicates in user input.
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iam::util::read-array platforms < <(iam::golang::dedup "${platforms[@]}")
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# Use iam::golang::dups to restrict the builds to the platforms in
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# IAM_SUPPORTED_*_PLATFORMS. Items should only appear at most once in each
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# set, so if they appear twice after the merge they are in the intersection.
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iam::util::read-array IAM_SERVER_PLATFORMS < <(iam::golang::dups \
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"${platforms[@]}" \
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"${IAM_SUPPORTED_SERVER_PLATFORMS[@]}" \
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)
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readonly IAM_SERVER_PLATFORMS
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iam::util::read-array IAM_CLIENT_PLATFORMS < <(iam::golang::dups \
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"${platforms[@]}" \
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"${IAM_SUPPORTED_CLIENT_PLATFORMS[@]}" \
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)
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readonly IAM_CLIENT_PLATFORMS
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elif [[ "${IAM_FASTBUILD:-}" == "true" ]]; then
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IAM_SERVER_PLATFORMS=(linux/amd64)
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readonly IAM_SERVER_PLATFORMS
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IAM_CLIENT_PLATFORMS=(linux/amd64)
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readonly IAM_CLIENT_PLATFORMS
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else
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IAM_SERVER_PLATFORMS=("${IAM_SUPPORTED_SERVER_PLATFORMS[@]}")
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readonly IAM_SERVER_PLATFORMS
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IAM_CLIENT_PLATFORMS=("${IAM_SUPPORTED_CLIENT_PLATFORMS[@]}")
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readonly IAM_CLIENT_PLATFORMS
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fi
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}
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iam::golang::setup_platforms
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# The set of client targets that we are building for all platforms
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# If you update this list, please also update build/BUILD.
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readonly IAM_CLIENT_TARGETS=(
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iamctl
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)
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readonly IAM_CLIENT_BINARIES=("${IAM_CLIENT_TARGETS[@]##*/}")
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readonly IAM_ALL_TARGETS=(
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"${IAM_SERVER_TARGETS[@]}"
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"${IAM_CLIENT_TARGETS[@]}"
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)
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readonly IAM_ALL_BINARIES=("${IAM_ALL_TARGETS[@]##*/}")
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# Asks golang what it thinks the host platform is. The go tool chain does some
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# slightly different things when the target platform matches the host platform.
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iam::golang::host_platform() {
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echo "$(go env GOHOSTOS)/$(go env GOHOSTARCH)"
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}
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# Ensure the go tool exists and is a viable version.
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iam::golang::verify_go_version() {
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if [[ -z "$(command -v go)" ]]; then
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iam::log::usage_from_stdin <<EOF
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Can't find 'go' in PATH, please fix and retry.
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See http://golang.org/doc/install for installation instructions.
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EOF
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return 2
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fi
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local go_version
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IFS=" " read -ra go_version <<< "$(go version)"
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local minimum_go_version
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minimum_go_version=go1.13.4
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if [[ "${minimum_go_version}" != $(echo -e "${minimum_go_version}\n${go_version[2]}" | sort -s -t. -k 1,1 -k 2,2n -k 3,3n | head -n1) && "${go_version[2]}" != "devel" ]]; then
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iam::log::usage_from_stdin <<EOF
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Detected go version: ${go_version[*]}.
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IAM requires ${minimum_go_version} or greater.
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Please install ${minimum_go_version} or later.
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EOF
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return 2
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fi
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}
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# iam::golang::setup_env will check that the `go` commands is available in
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# ${PATH}. It will also check that the Go version is good enough for the
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# IAM build.
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#
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# Outputs:
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# env-var GOBIN is unset (we want binaries in a predictable place)
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# env-var GO15VENDOREXPERIMENT=1
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# env-var GO111MODULE=on
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iam::golang::setup_env() {
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iam::golang::verify_go_version
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# Unset GOBIN in case it already exists in the current session.
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unset GOBIN
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# This seems to matter to some tools
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export GO15VENDOREXPERIMENT=1
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# Open go module feature
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export GO111MODULE=on
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# This is for sanity. Without it, user umasks leak through into release
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# artifacts.
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umask 0022
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}
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