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# Copyright:: Chef Software Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
require_relative "../http"
require_relative "../json_compat"
require_relative "../resource"
class Chef
class Resource
class HabitatConfig < Chef::Resource
unified_mode true
provides :habitat_config
description "Use the **habitat_config** resource to apply a configuration to a Chef Habitat service."
introduced "17.3"
examples <<~DOC
**Configure your nginx defaults**
```ruby
habitat_config 'nginx.default' do
config({
worker_count: 2,
http: {
keepalive_timeout: 120
}
})
end
```
DOC
property :config, Mash, required: true, coerce: proc { |m| m.is_a?(Hash) ? Mash.new(m) : m },
description: "The configuration to apply as a ruby hash, for example, `{ worker_count: 2, http: { keepalive_timeout: 120 } }`."
property :service_group, String, name_property: true, desired_state: false,
description: "The service group to apply the configuration to. For example, `nginx.default`"
property :remote_sup, String, default: "127.0.0.1:9632", desired_state: false,
description: "Address to a remote supervisor's control gateway."
# Http port needed for querying/comparing current config value
property :remote_sup_http, String, default: "127.0.0.1:9631", desired_state: false,
description: "Address for remote supervisor http port. Used to pull existing."
property :gateway_auth_token, String, desired_state: false,
description: "Auth token for accessing the remote supervisor's http port."
property :user, String, desired_state: false,
description: "Name of user key to use for encryption. Passes `--user` to `hab config apply`."
load_current_value do
http_uri = "http://#{remote_sup_http}"
begin
headers = {}
headers["Authorization"] = "Bearer #{gateway_auth_token}" if property_is_set?(:gateway_auth_token)
census = Mash.new(Chef::HTTP::SimpleJSON.new(http_uri).get("/census", headers))
sc = census["census_groups"][service_group]["service_config"]["value"]
rescue
# Default to a blank config if anything (http error, json parsing, finding
# the config object) goes wrong
sc = {}
end
config sc
end
action :apply, description: "applies the given configuration" do
converge_if_changed do
# Use the current timestamp as the serial number/incarnation
incarnation = Time.now.tv_sec
opts = []
# opts gets flattened by shell_out_compact later
opts << ["--remote-sup", new_resource.remote_sup] if new_resource.remote_sup
opts << ["--user", new_resource.user] if new_resource.user
tempfile = Tempfile.new(["habitat_config", ".toml"])
begin
tempfile.write(render_toml(new_resource.config))
tempfile.close
hab("config", "apply", opts, new_resource.service_group, incarnation, tempfile.path)
ensure
tempfile.close
tempfile.unlink
end
end
end
action_class do
use "../resource/habitat/habitat_shared"
end
end
end
end
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