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|
load("@bazel-erlang//:erlang_home.bzl", "ErlangHomeProvider", "ErlangVersionProvider")
load(
"@bazel-erlang//:bazel_erlang_lib.bzl",
"BEGINS_WITH_FUN",
"ErlangLibInfo",
"QUERY_ERL_VERSION",
"flat_deps",
"path_join",
)
load("//:elixir_home.bzl", "ElixirHomeProvider")
MIX_DEPS_DIR = "mix_deps"
def _impl(ctx):
erlang_version = ctx.attr._erlang_version[ErlangVersionProvider].version
erlang_home = ctx.attr._erlang_home[ErlangHomeProvider].path
elixir_home = ctx.attr._elixir_home[ElixirHomeProvider].path
escript = ctx.actions.declare_file(path_join("escript", "rabbitmqctl"))
ebin = ctx.actions.declare_directory("ebin")
copy_compiled_deps_commands = []
copy_compiled_deps_commands.append("mkdir ${{MIX_INVOCATION_DIR}}/{}".format(MIX_DEPS_DIR))
for dep in ctx.attr.deps:
lib_info = dep[ErlangLibInfo]
if lib_info.erlang_version != erlang_version:
fail("Mismatched erlang versions", erlang_version, lib_info.erlang_version)
dest_dir = path_join("${MIX_INVOCATION_DIR}", MIX_DEPS_DIR, lib_info.lib_name)
copy_compiled_deps_commands.append(
"mkdir {}".format(dest_dir),
)
copy_compiled_deps_commands.append(
"mkdir {}".format(path_join(dest_dir, "include")),
)
copy_compiled_deps_commands.append(
"mkdir {}".format(path_join(dest_dir, "ebin")),
)
for hdr in lib_info.include:
copy_compiled_deps_commands.append(
"cp ${{PWD}}/{source} {target}".format(
source = hdr.path,
target = path_join(dest_dir, "include", hdr.basename),
),
)
for beam in lib_info.beam:
copy_compiled_deps_commands.append(
"cp ${{PWD}}/{source} {target}".format(
source = beam.path,
target = path_join(dest_dir, "ebin", beam.basename),
),
)
mix_invocation_dir = ctx.actions.declare_directory("{}_mix".format(ctx.label.name))
package_dir = ctx.label.package
if ctx.label.workspace_root != "":
package_dir = path_join(ctx.label.workspace_root, package_dir)
script = """
set -euo pipefail
export LANG="en_US.UTF-8"
export LC_ALL="en_US.UTF-8"
export PATH={elixir_home}/bin:{erlang_home}/bin:${{PATH}}
MIX_INVOCATION_DIR="{mix_invocation_dir}"
cp -R ${{PWD}}/{package_dir}/config ${{MIX_INVOCATION_DIR}}/config
# cp -R ${{PWD}}/{package_dir}/include ${{MIX_INVOCATION_DIR}}/include # rabbitmq_cli's include directory is empty
cp -R ${{PWD}}/{package_dir}/lib ${{MIX_INVOCATION_DIR}}/lib
cp ${{PWD}}/{package_dir}/mix.exs ${{MIX_INVOCATION_DIR}}/mix.exs
{copy_compiled_deps_command}
cd ${{MIX_INVOCATION_DIR}}
export HOME=${{PWD}}
{begins_with_fun}
V=$({query_erlang_version})
if ! beginswith "{erlang_version}" "$V"; then
echo "Erlang version mismatch (Expected {erlang_version}, found $V)"
exit 1
fi
export DEPS_DIR={mix_deps_dir}
mix local.hex --force
mix local.rebar --force
mix make_all
cd ${{OLDPWD}}
cp ${{MIX_INVOCATION_DIR}}/escript/rabbitmqctl {escript_path}
mkdir -p {ebin_dir}
mv ${{MIX_INVOCATION_DIR}}/_build/dev/lib/rabbitmqctl/ebin/* {ebin_dir}
mv ${{MIX_INVOCATION_DIR}}/_build/dev/lib/rabbitmqctl/consolidated/* {ebin_dir}
rm -dR ${{MIX_INVOCATION_DIR}}
mkdir ${{MIX_INVOCATION_DIR}}
touch ${{MIX_INVOCATION_DIR}}/placeholder
""".format(
begins_with_fun = BEGINS_WITH_FUN,
query_erlang_version = QUERY_ERL_VERSION,
erlang_version = erlang_version,
erlang_home = erlang_home,
elixir_home = elixir_home,
mix_invocation_dir = mix_invocation_dir.path,
package_dir = package_dir,
copy_compiled_deps_command = " && ".join(copy_compiled_deps_commands),
mix_deps_dir = MIX_DEPS_DIR,
escript_path = escript.path,
ebin_dir = ebin.path,
)
inputs = []
inputs.extend(ctx.files.srcs)
for dep in ctx.attr.deps:
lib_info = dep[ErlangLibInfo]
inputs.extend(lib_info.include)
inputs.extend(lib_info.beam)
ctx.actions.run_shell(
inputs = inputs,
outputs = [escript, ebin, mix_invocation_dir],
command = script,
mnemonic = "MIX",
)
deps = flat_deps(ctx.attr.deps)
runfiles = ctx.runfiles([ebin])
for dep in ctx.attr.deps:
runfiles = runfiles.merge(dep[DefaultInfo].default_runfiles)
return [
DefaultInfo(
executable = escript,
files = depset([ebin]),
runfiles = runfiles,
),
ErlangLibInfo(
lib_name = ctx.attr.name,
erlang_version = erlang_version,
include = [],
beam = [ebin],
priv = [],
deps = deps,
),
]
rabbitmqctl = rule(
implementation = _impl,
attrs = {
"srcs": attr.label_list(allow_files = True),
"deps": attr.label_list(providers = [ErlangLibInfo]),
"_erlang_version": attr.label(default = "@bazel-erlang//:erlang_version"),
"_erlang_home": attr.label(default = "@bazel-erlang//:erlang_home"),
"_elixir_home": attr.label(default = "//:elixir_home"),
},
executable = True,
)
|
