Adding readme and license

.gitignore

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+# BAZEL
+#######
+# Ignore backup files.
+*~
+# Ignore Vim swap files.
+.*.swp
+# Ignore files generated by IDEs.
+/.classpath
+/.factorypath
+/.idea/
+/.ijwb/
+/.project
+/.settings
+/.vscode/
+/bazel.iml
+# Ignore all bazel-* symlinks. There is no full list since this can change
+# based on the name of the directory bazel is cloned into.
+/bazel-*
+# Ignore outputs generated during Bazel bootstrapping.
+/output/
+# Ignore jekyll build output.
+/production
+/.sass-cache

LICENSE

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+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <http://unlicense.org>

WORKSPACE

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+workspace(name = "io_bazel_rules_terraform")
+
+#load("@bazel_tools//tools/build_defs/repo:http.bzl", 
+#	 "http_archive", "http_file")
+## THIRD PARTY TOOLS
+###################################
+#http_archive(
+#	name = "terraform_linux",
+#	url = "https://releases.hashicorp.com/terraform/0.11.2/terraform_0.11.2_linux_amd64.zip",
+#	build_file_content = """
+#filegroup(
+#	name = "terraform_linux_tool",
+#	srcs = ["terraform"],
+#	visibility = ["//visibility:public"]
+#)
+#""", sha256 = "f728fa73ff2a4c4235a28de4019802531758c7c090b6ca4c024d48063ab8537b"
+#) 
+#http_archive(
+#	name = "terraform_darwin",
+#	url = "https://releases.hashicorp.com/terraform/0.11.2/terraform_0.11.2_darwin_amd64.zip",
+#	build_file_content = """
+#filegroup(
+#	name = "terraform_darwin_tool",
+#	srcs = ["terraform"],
+#	visibility = ["//visibility:public"]
+#)
+#""",
+#	sha256 = "ff5c3c4bcfe84e011b96a2232704b2db196383ce5d4a32e47956c883ddc94bac"
+#)
+
+load("//rules_terraform:terraform.bzl", "terraform_register_toolchains")
+
+terraform_register_toolchains()

readme.md

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+Rules_Terraform
+===============
+
+[Bazel](https://bazel.build/) rules for using [Hashicorp](https://www.hashicorp.com/)'s [Terraform](https://www.terraform.io/) within your bazel build.
+
+License
+=======
+
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <http://unlicense.org>

rules_terraform/BUILD

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+package(default_visibility = ["//visibility:public"])
+load("//rules_terraform:terraform.bzl", "setup_terraform_toolchains")
+
+setup_terraform_toolchains()

rules_terraform/terraform.bzl

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+#toolchain_type(name = "toolchain_type")
+
+toolchains = {
+    "terraform_linux": {
+        "name": "terraform_linux",
+        "exec_compatible_with": [ 
+            "@bazel_tools//platforms:linux",
+            "@bazel_tools//platforms:x86_64",
+        ],
+        "target_compatible_with": [ 
+            "@bazel_tools//platforms:linux",
+            "@bazel_tools//platforms:x86_64",
+        ],
+        "toolchain":":terraform_linux",
+        "toolchain_type":"@io_bazel_rules_terraform//:toolchain_type",
+        "url":"https://releases.hashicorp.com/terraform/0.11.11/terraform_0.11.11_linux_amd64.zip",
+        "sha256":"t94504f4a67bad612b5c8e3a4b7ce6ca2772b3c1559630dfd71e9c519e3d6149c"
+    },
+    "terraform_osx": {
+        "name": "terraform_osx",
+        "exec_compatible_with": [
+            "@bazel_tools//platforms:osx",
+            "@bazel_tools//platforms:x86_64",
+        ],
+        "target_compatible_with": [
+            "@bazel_tools//platforms:osx",
+            "@bazel_tools//platforms:x86_64",
+        ],
+        "toolchain":":terraform_osx",
+        "toolchain_type":"@io_bazel_rules_terraform//:toolchain_type",
+        "url":"https://releases.hashicorp.com/terraform/0.11.11/terraform_0.11.11_darwin_amd64.zip",
+        "sha256":"6b6e8253b678554c67d717c42209fd857bfe64a1461763c05d3d1d85c6f618d3"
+    }
+}
+
+TerraformInfo = provider(
+    doc = "Information on how to call terraform",
+    fields = [
+        "executable",
+        "url",
+        "sha256"
+    ],
+)
+
+def _terraform_toolchain_impl(ctx):
+    toolchain_info = platform_common.ToolchainInfo(
+        terraforminfo = TerraformInfo(
+            executable = ctx.attr.executable,
+            url = ctx.attr.url,
+            sha256 = ctx.attr.sha256
+        ),
+    )
+    return [toolchain_info]
+
+terraform_toolchain = rule(
+    implementation = _terraform_toolchain_impl,
+    attrs = {
+        "executable": attr.string(),
+        "url": attr.string(),
+        "sha256": attr.string()
+    }
+)
+
+def setup_terraform_toolchains():
+    for name, toolchain in toolchains.items():
+        terraform_toolchain(
+            name = toolchain["name"],
+            executable = "",
+            url = toolchain["url"],
+            sha256 = toolchain["sha256"])
+        native.toolchain(
+            name = "{0}_toolchain".format(toolchain["name"]),
+            exec_compatible_with = toolchain["exec_compatible_with"],
+            target_compatible_with = toolchain["target_compatible_with"],
+            toolchain = toolchain["toolchain"],
+            toolchain_type = toolchain["toolchain_type"]
+        )
+
+def _download_terraform_impl(ctx):
+    if ctx.os.name == "linux":
+        host = "terraform_linux"
+        sumurl = "https://releases.hashicorp.com/terraform/{0}/terraform_{0}_SHA256SUMS".format(ctx.attr.version)
+        url = "https://releases.hashicorp.com/terraform/{0}/terraform_{0}_linux_amd64.zip".format(ctx.attr.version)
+    elif ctx.os.name == "mac os x":
+        host = "terraform_osx"
+    else:
+        fail("Unsupported operating system: " + ctx.os.name)
+
+    toolchain = toolchains[host]
+
+    ctx.file("BUILD.bazel",
+        """
+filegroup(
+    name = "terraform_executable",
+    srcs = ["terraform/terraform"],
+    visibility = ["//visibility:public"]
+)
+""",
+        executable=False
+    )
+    ctx.download_and_extract(
+        url = toolchain["url"],
+        sha256 = toolchain["sha256"],
+        output = "terraform",
+        type = "zip",
+    )
+
+download_terraform = repository_rule(
+    implementation = _download_terraform_impl,
+    attrs = {
+        "version": attr.string(
+            mandatory = True
+        )
+    }
+)
+
+# TODO:  Need to define the plugin provider system
+#def _terraform_provider_plugin_impl(ctx):
+#    pass
+#
+#terraform_provider_plugin = repository_rule(
+#    implementation = _terraform_provider_plugin_impl,
+#    attrs = {
+#        "name": attr.string(
+#            mandatory = True
+#        ),
+#        "version": attr.string(
+#            mandatory = True
+#        )
+#    }
+#)
+
+def _terraform_plan(ctx):
+    deps = depset(ctx.files.srcs)
+    ctx.actions.run(
+        executable = ctx.executable._exec,
+        inputs = deps.to_list(),
+        outputs = [ctx.outputs.out],
+        mnemonic = "TerraformInitialize",
+        arguments = [
+            "plan", 
+            "-out={0}".format(ctx.outputs.out.path), deps.to_list()[0].dirname
+        ]
+    )
+
+terraform_plan = rule(
+    implementation = _terraform_plan,
+    attrs = {
+        "srcs": attr.label_list(
+            mandatory = True,
+            allow_files = True
+        ),
+        "_exec": attr.label(
+            default = Label("@terraform_exec//:terraform_executable"),
+            allow_files = True,
+            executable = True,
+            cfg = "host"
+        )
+    },
+    toolchains = ["@io_bazel_rules_terraform//:toolchain_type"],
+    outputs = {"out": "%{name}.out"},
+)
+
+def terraform_register_toolchains(version="0.11.11"):
+    if "download_terraform" not in native.existing_rules():
+        download_terraform(
+            name = "terraform_exec",
+            version = version
+        )
+
+    for name, toolchain in toolchains.items():
+        native.register_toolchains(
+            "//rules_terraform:{0}_toolchain".format(toolchain["name"]),
+        )

test/BUILD

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+package(default_visibility = ["//visibility:public"])
+load("//rules_terraform:terraform.bzl", "terraform_plan")
+
+terraform_plan(
+	name = "test",
+	srcs = glob(["*.tf"])
+)

test/terraform.tf

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+#resource "tls_private_key" "example" {
+#  algorithm = "ECDSA"
+#}