[fint] Initial integration interface commit
This change introduces the "fint" (*f*uchsia *int*egration) tool.
It is meant to drive fuchsia's continuous integration workflows
and realize the "integration interface".
The infrastructure will take an added dependency on a bootstapping
script, fint_init.sh, to build fint, so that it may in turn build the
platform.
Bug: 10428
Bug: 10429
Change-Id: Ied569140f0cac21d7a315e9eec3989bfd27816d0
diff --git a/tools/integration/OWNERS b/tools/integration/OWNERS
index a686cdb..0555dbd 100644
--- a/tools/integration/OWNERS
+++ b/tools/integration/OWNERS
@@ -1,3 +1,4 @@
abarth@google.com
+garymm@google.com
jamesr@google.com
joshuaseaton@google.com
diff --git a/tools/integration/README.md b/tools/integration/README.md
new file mode 100644
index 0000000..4f84f32
--- /dev/null
+++ b/tools/integration/README.md
@@ -0,0 +1,9 @@
+# Fuchsia's Integration Interface: fint
+
+Fuchsia's _integration interface_ is the interface between the Fuchsia platform
+and any infrastructure that builds and tests Fuchsia. It is encapsulated as the
+interface of the tool _fint_ (/'fɪnt/, **f**uchsia **int**egration).
+
+TODO(fxbug.dev/10428, fxbug.dev/10429): fint is under simulateous and iterative
+design and developement. As it is extended, keep its interface documented and
+up-to-date here.
diff --git a/tools/integration/bootstrap.sh b/tools/integration/bootstrap.sh
new file mode 100755
index 0000000..81c6d0720
--- /dev/null
+++ b/tools/integration/bootstrap.sh
@@ -0,0 +1,114 @@
+#!/bin/bash
+# Copyright 2019 The Fuchsia Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can
+# found in the LICENSE file.
+
+set -o errexit # exit when a command fails
+set -o nounset # error when an undefined variable is referenced
+set -o pipefail # error if the input command to a pipe fails
+
+readonly SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"
+readonly FUCHSIA_ROOT="$(dirname "$(dirname "$SCRIPT_DIR")")"
+
+# Path to the fint main package, relative to fuchsia root.
+readonly DOCI_PKG_PATH="tools/integration/fint/cmd"
+# The go repos that fint depends on, given an an array of pairs of the form
+# (<repo name>, <path in the tree to that vendored repo>).
+readonly GO_DEPS=(
+ # Note: this assumes that all fuchsia packages to be used by fint have names
+ # that mirror their paths within fuchsia.git.
+ "go.fuchsia.dev/fuchsia"
+ "${FUCHSIA_ROOT}"
+)
+
+print_usage_and_exit() {
+ readonly exit_code=$1
+ # In the case of a non-zero exit, redirect the stdout below to stderr.
+ if [[ $exit_code -ne 0 ]]; then
+ exec 1 >&2
+ fi
+
+ echo ""
+ echo "Used to bootstrap the \"fint\" tool, which provides the platform's"
+ echo "\"integration interface\"."
+ echo "See //tools/integration/README.md for more details."
+ echo ""
+ echo "usage: $(basename "$0") (-o <path>)"
+ echo ""
+ echo "options:"
+ echo "-o: points to a file path at which to output fint; if unsupplied, it"
+ echo " will be output to the current working directory."
+ echo ""
+
+ exit "$exit_code"
+}
+
+
+###############################################################################
+# Returns the host platform, of the form <OS>-<architecture>.
+# Globals:
+# None
+# Arguments:
+# None
+# Returns:
+# The host platform, if successful.
+###############################################################################
+host_platform() {
+ readonly uname="$(uname --kernel-name --machine)"
+ case "${uname}" in
+ "Linux x86_64") echo linux-x64 ;;
+ "Darwin x86_64") echo mac-x64 ;;
+ *)
+ echo "unsupported infrastructure platform: ${uname}" 1>&2
+ exit 1
+ ;;
+ esac
+}
+
+###############################################################################
+# Symlinks already vendored go repositories, depended on by fint, to a provided
+# go path.
+# Globals:
+# GO_DEPS
+# Arguments:
+# $1 - a go path
+# Returns:
+# None
+###############################################################################
+symlink_go_deps() {
+ readonly gopath="$1"
+ for (( i=0 ; i < ${#GO_DEPS[@]} ; i += 2 )) ; do
+ readonly host="${GO_DEPS[i]}"
+ readonly src="${GO_DEPS[i+1]}"
+ readonly dest="${gopath}/src/${host}"
+ mkdir -p "$(dirname "${dest}")"
+ ln --symbolic --no-target-directory "${src}" "${dest}"
+ done
+}
+
+main() {
+ local output
+ output="$(pwd)/fint"
+ while getopts 'ho:' opt; do
+ case "$opt" in
+ h) print_usage_and_exit 0 ;;
+ o) output="${OPTARG}" ;;
+ ?) print_usage_and_exit 1 ;;
+ esac
+ done
+
+ readonly GOPATH="$(mktemp --directory -t fint.XXXXX)"
+ rm_gopath() {
+ rm --recursive --force "${GOPATH}"
+ }
+ trap rm_gopath EXIT
+ export GOPATH
+ symlink_go_deps "${GOPATH}"
+ # Execute `go build` from the fuchsia root, as the package to build must be
+ # supplied as a relative path.
+ readonly go_bin="${FUCHSIA_ROOT}/prebuilt/third_party/go/$(host_platform)/bin/go"
+ cd "${FUCHSIA_ROOT}" && ${go_bin} build -o "${output}" "./${DOCI_PKG_PATH}"
+}
+
+main "$@"
+
diff --git a/tools/integration/fint/cmd/main.go b/tools/integration/fint/cmd/main.go
new file mode 100644
index 0000000..be1d673
--- /dev/null
+++ b/tools/integration/fint/cmd/main.go
@@ -0,0 +1,12 @@
+// Copyright 2019 The Fuchsia Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can
+// found in the LICENSE file.
+package main
+
+import (
+ "fmt"
+)
+
+func main() {
+ fmt.Println("TODO(fxbug.dev/10429): implement me!")
+}
