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defs.bzl
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defs.bzl
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load("@io_bazel_rules_go//go:def.bzl", "GoSource", "GoPath", "go_context", "go_path")
EntGenerateInfo = provider(
"Ent schema generation info",
fields = {
"libraries": "Dict of library names mapped to output file lists",
"entities": "String list of entity names",
"schema": "Label of schema lib",
"schema_path": "Local path of schema package",
"schema_packagename": "Name of schema package",
"target_path": "Local path of target package",
"target_importpath": "Importpath of target package",
},
)
def _ent_generate_impl(ctx):
go = go_context(ctx)
# TODO: Discuss single-file output with Ent maintainers.
files = []
for f in [
"client",
"ent",
"mutation",
"runtime",
"tx",
"enttest/enttest",
"hook/hook",
"migrate/migrate",
"migrate/schema",
"predicate/predicate",
"runtime/runtime",
]:
files.append(f + ".go")
# TODO: get entity names from schema.
for entity in ctx.attr.entities:
for suffix in ["", "_create", "_delete", "_query", "_update"]:
files.append(entity + suffix + ".go")
files.append(entity + "/" + entity + ".go")
files.append(entity + "/where.go")
libraries = {}
outputs = []
for f in files:
outfile = ctx.actions.declare_file(f)
outputs.append(outfile)
(dir, _, _) = f.rpartition("/")
if dir:
libraries.setdefault(dir, []).append(outfile)
else:
libraries.setdefault("ent", []).append(outfile)
schema_srcs = []
for pkg in ctx.attr.gopath[GoPath].packages:
for src in pkg.srcs:
schema_srcs.append(src)
schema_path = "./" + ctx.attr.schema.label.package
schema_package = ctx.attr.schema[GoSource].library.importpath
target_path = outputs[0].dirname # TODO: better/cleaner way?
target_package = ctx.attr.importpath
ctx.actions.run_shell(
mnemonic = "EntGenerate",
progress_message = "Generating Ent files in {dir}".format(dir = target_path),
command = """
set -eu
export PATH="$(pwd)/{gobin}:$PATH"
export GOCACHE="$(pwd)/.gocache"
export GOPATH="$(pwd)/.gopath"
exec {generate} "$@"
""".format(
gobin = go.go.dirname,
generate = ctx.executable._generate.path,
),
arguments = [schema_path, schema_package, target_path, target_package],
# TODO: check rules_go again what tools are really needed here.
tools = [ctx.executable._generate] + go.sdk_tools + go.sdk_files,
inputs = depset(ctx.files.gomod + schema_srcs),
outputs = outputs,
env = {"GOROOT_FINAL": "GOROOT"},
)
return [
DefaultInfo(
files = depset(outputs),
runfiles = None,
),
EntGenerateInfo(
libraries = libraries,
entities = ctx.attr.entities,
schema = ctx.attr.schema,
schema_path = schema_path,
schema_packagename = schema_package,
target_path = target_path,
target_importpath = target_package,
),
]
_ent_generate = rule(
implementation = _ent_generate_impl,
attrs = {
"schema": attr.label(
mandatory = True,
),
"_generate": attr.label(
executable = True,
default = Label("@com_github_cloneable_rules_ent//cmd/generate"),
cfg = "exec",
),
"_go_context_data": attr.label(
default = Label("@io_bazel_rules_go//:go_context_data"),
),
"gopath": attr.label(),
"importpath": attr.string(mandatory = True),
"deps": attr.label_list(
default = [
"@io_entgo_ent//:go_default_library",
"@io_entgo_ent//dialect:go_default_library",
"@io_entgo_ent//dialect/sql:go_default_library",
"@io_entgo_ent//dialect/sql/schema:go_default_library",
"@io_entgo_ent//dialect/sql/sqlgraph:go_default_library",
"@io_entgo_ent//schema/field:go_default_library",
],
),
"gomod": attr.label(),
# TODO: remove this.
"entities": attr.string_list(mandatory = True),
},
toolchains = ["@io_bazel_rules_go//go:toolchain"],
)
def _ent_library_impl(ctx):
go = go_context(ctx)
ent = ctx.attr.ent_generate[EntGenerateInfo]
lib = "ent"
if ctx.attr.entlib:
lib = ctx.attr.entlib
files = ent.libraries[lib]
library = go.new_library(go, srcs = files, deps = ctx.attr.deps + ctx.attr._ent_deps + [ent.schema])
source = go.library_to_source(go, ctx.attr, library, ctx.coverage_instrumented())
archive = go.archive(go, source = source)
return [library, source, archive, DefaultInfo(files = depset(files)), OutputGroupInfo(
cgo_exports = archive.cgo_exports,
compilation_outputs = [archive.data.file],
)]
_ent_library = rule(
implementation = _ent_library_impl,
attrs = {
"importpath": attr.string(mandatory = True),
"entlib": attr.string(),
"ent_generate": attr.label(mandatory = True, providers = [EntGenerateInfo]),
"deps": attr.label_list(),
"_ent_deps": attr.label_list(
default = [
"@io_entgo_ent//:go_default_library",
"@io_entgo_ent//dialect:go_default_library",
"@io_entgo_ent//dialect/sql:go_default_library",
"@io_entgo_ent//dialect/sql/schema:go_default_library",
"@io_entgo_ent//dialect/sql/sqlgraph:go_default_library",
"@io_entgo_ent//schema/field:go_default_library",
],
),
"_go_context_data": attr.label(
default = Label("@io_bazel_rules_go//:go_context_data"),
),
},
toolchains = ["@io_bazel_rules_go//go:toolchain"],
)
def go_ent_library(name, gomod, entities, schema, visibility, importpath):
# TODO: handle potential name conflicts.
go_path(
name = name + "_gopath",
deps = [schema],
)
_ent_generate(
name = name + "_generate",
entities = entities,
schema = schema,
gomod = gomod,
importpath = importpath,
gopath = ":" + name + "_gopath",
)
default_deps = [
schema,
"@io_entgo_ent//:go_default_library",
"@io_entgo_ent//dialect:go_default_library",
"@io_entgo_ent//dialect/sql:go_default_library",
"@io_entgo_ent//dialect/sql/schema:go_default_library",
"@io_entgo_ent//dialect/sql/sqlgraph:go_default_library",
"@io_entgo_ent//schema/field:go_default_library",
]
libdeps = {
"enttest": [
":" + name,
":" + name + "_runtime",
] + default_deps,
"hook": [
":" + name,
] + default_deps,
"migrate": [
] + default_deps,
"predicate": [
] + default_deps,
"runtime": [
] + default_deps,
}
for entity in entities:
libdeps[entity] = [
":" + name + "_predicate",
] + default_deps
_ent_library(
name = name,
ent_generate = ":" + name + "_generate",
importpath = importpath,
visibility = visibility,
deps = [
":" + name + "_predicate",
":" + name + "_migrate",
] + default_deps + [":" + name + "_" + entity for entity in entities],
)
for libname, deps in libdeps.items():
_ent_library(
name = name + "_" + libname,
entlib = libname,
ent_generate = ":" + name + "_generate",
importpath = importpath + "/" + libname,
visibility = visibility,
deps = deps,
)