includeconfigsource

README

Include Config Source (Alpha)

Use the include config source to inject golang templates or plain files into the configuration. The config source can be used to insert scalar data or complete YAML sections.

Configuration

Under the config_sources: use include: or include/<name>: to create a template config source. The following parameters are available to customize the include config sources:

config_sources:
  include:
  include/my_name_00:
    # delete_files can be used to make the "include" config source delete the
    # files referenced by it. This is typically used to remove secrets from the
    # file system. The file is deleted as soon as its value is read by the config
    # source. The default value is false. It is an invalid configuration to set it
    # to true together with the watch_files parameter (see below).
    delete_files: true
  include/my_name_01:
    # watch_files can be used to make the "include" config source monitor for
    # updates on the used files. Setting it to true will trigger a configuration
    # reload if any of the files used by the config source are updated.
    # Configuration reload causes temporary interruption of the data flow during
    # the time taken to shut down the current pipeline configuration and start the
    # new one. The default value is false. It is an invalid configuration to set it
    # to true together with the delete_files parameter (see above).
    watch_files: true

Example of how to use the delete_files and watch_files:

config_sources:
  include/default:
  include/secret:
    delete_files: true
  include/watch_for_updates:
    watch_files: true

components:
  component_0:
    # Default usage: configuration won't be reloaded if the file
    # '/etc/configs/component_field' is changed.
    component_field: ${include/default:/etc/configs/component_field} 

  component_1:
    # 'include/secret' was created with 'delete_files' set to true the
    # file '/etc/configs/secret' after its value is read. If the deletion
    # fails the collector won't start.
    component_field: ${include/secret:/etc/configs/secret} 

  component_2:
    # 'include/watch_for_updates' was created with 'watch_files' set to true.
    # If the file '/etc/configs/my_config' is changed the collector configuration
    # will be reloaded.
    component_field: ${include/watch_for_updates:/etc/configs/my_config} 

The config source can be used to insert complete sections of the configuration:

config_sources:
  include:

# The 'receivers' section is filled with the contests of /etc/configs/receivers.yaml 
receivers: ${include:/etc/configs/receivers.yaml}

# The 'exporters' section is filled with the contests of /etc/configs/exporters.yaml 
exporters: ${include:/etc/configs/exporters.yaml}

service:
  # The 'pipelines' section is filled with the contests of /etc/configs/pipelines.yaml 
  pipelines: ${include:/etc/configs/pipelines.yaml}

If the file being included is a golang template the parameters on the specific reference are used to process the template For example, assuming that ./templates/component_template looks like:

logs_path: {{ .my_glob_pattern }}
log_format: {{ .my_format }}

Given the configuration file:

config_sources:
  include:

components:
  # component_0 is built from the ./templates/component_template file
  # according to the template parameters and commands. The example below
  # defines a few parameters to be used by the template.
  component_0: |
    $include: ./templates/component_template
    my_glob_pattern: /var/**/*.log
    my_format: json

The effective configuration will be:

components:
  component_0:
    logs_path: /var/**/*.log
    log_format: json 

See golang templates for a complete description of templating functions and syntax.

Documentation

Index

• func NewFactory() configprovider.Factory
• type Config

Functions

func NewFactory

func NewFactory() configprovider.Factory

NewFactory creates a factory for include ConfigSource objects.

Types

type Config

type Config struct {
	*configprovider.Settings

	// DeleteFiles is used to instruct the config source to delete the
	// files after its content is read. The default value is 'false'.
	// Set it to 'true' to force the deletion of the file as soon
	// as the config source finished using it.
	DeleteFiles bool `mapstructure:"delete_files"`
	// WatchFiles is used to control if the referenced files should
	// be watched for updates or not. The default value is 'false'.
	// Set it to 'true' to watch the referenced files for changes.
	WatchFiles bool `mapstructure:"watch_files"`
}

Config holds the configuration for the creation of include config source objects.