plugin

The plugin block enables you to set plugin-level options like soft memory limits and rate limiters. You can then associate connections with the the plugin.

plugin "aws" {
  memory_max_mb = 2048

  limiter "aws_global" {
    max_concurrency = 200
  }
}

Supported options

Plugins and Connections

You may optionally define a plugin in a .spc file to set plugin-level options like soft memory limits and rate limiters.

plugin "aws" {
  memory_max_mb = 2048
}

The block label is assumed to be the plugin short name unless the source argument is present. The label may only contain alphanumeric characters, dashes, or underscores. The source argument, however, accepts any plugin version string allowing you to refer to any version.

plugin "my_aws" {
  source        = "aws@0.41.0"
  memory_max_mb = 2048
}

In a connection you may continue to use the current syntax for the plugin argument. Steampipe will resolve the connection to the plugin as long as they resolve to the same plugin version:

connection "aws" {
  plugin = "aws"
}

plugin "aws" {
  memory_max_mb = 2048
}

Note that if a connection specifies a plugin version string that resolves to more than 1 plugin instance, Steampipe will not be able to load the connection, as it cannot assume which plugin instance to resolve to. For example, this configuration will cause a warning and the connection will be in error:

connection "aws" {
  plugin = "aws"
}

plugin "aws" {
  memory_max_mb = 2048
}

plugin "aws_low_mem" {
  source        = "aws"
  memory_max_mb = 512
}

You may instead specify a reference to a plugin block in your connection to disambiguate:

connection "aws" {
  plugin = plugin.aws
}

plugin "aws" {
  memory_max_mb = 2048
}

plugin "aws_low_mem" {
  source        = "aws"
  memory_max_mb = 512
}

Steampipe will create a separate plugin process for each plugin defined that has connections associated to it. This allows you to run multiple versions side by side, but also to create multiple processes with the SAME version to allow you to create QOS groups. In the following example, Steampipe will create 2 plugin processes:

• One process has a 2000 MB memory soft limit and no limiters, and contains the aws_prod_1, aws_prod_2, and aws_prod_3 connections.
• One process has a 500 MB memory soft limit and the all_requests limiter, and contains the aws_dev_1 and aws_dev_2 connections.

plugin "aws_high" {
  memory_max_mb = 2000
  source        = "aws"
}

plugin "aws_low" {
  memory_max_mb = 500
  source        = "aws"

  limiter "all_requests" {
    bucket_size  = 100
    fill_rate    = 100
    max_concurrency = 50
  }
}

connection "aws_prod_1" {
  plugin  = plugin.aws_high
  profile = "prod1"
  regions = ["*"]
}

connection "aws_prod_2" {
  plugin  = plugin.aws_high
  profile = "prod2"
  regions = ["*"]
}

connection "aws_prod_3" {
  plugin  = plugin.aws_high
  profile = "prod3"
  regions = ["*"]
}

connection "aws_dev_1" {
  plugin  = plugin.aws_low
  profile = "dev1"
  regions = ["*"]
}

connection "aws_dev_2" {
  plugin  = plugin.aws_low
  profile = "dev2"
  regions = ["*"]
}

Note that the aggregators can only aggregate connections from the single plugin instance for which they are configured. Extending the previous example:

connection "aws_prod" {
  plugin      = plugin.aws_high
  type        = "aggregator"
  connections = ["*"]
}

connection "aws_dev" {
  plugin      = plugin.aws_low
  type        = "aggregator"
  connections = ["*"]}

• The aws_prod aggregator will include the aws_prod_1, aws_prod_2, and aws_prod_3 connections
• The aws_dev aggregator will include the aws_dev_1 and aws_dev_2 connections

You can also run multiple plugin versions side-by-side:

plugin "aws_latest" {
  source = "aws"
}

plugin "aws_0_117_0" {
  source = "aws@0.117.0"
}


connection "aws_prod_1" {
  plugin  = plugin.aws_latest
  profile = "prod1"
  regions = ["*"]
}

connection "aws_prod_2" {
  plugin  = plugin.aws_0_117_0
  profile = "prod2"
  regions = ["*"]
}

limiter

Limiters provide a simple, flexible interface to implement client-site rate limiting and concurrency thresholds. You can use limiters to:

• Smooth the request rate from steampipe to reduce load on the remote API or service
• Limit the number of parallel request to reduce contention for client and network resources
• Avoid hitting server limits and throttling

Supported options

where syntax

The where argument supports the following PostgreSQL comparison operators:

You may use parentheses to force explicit lexical precedence, otherwise standard PostgreSQL operator precedence applies.

Examples

See the Concurrency & Rate Limiting for more examples.

plugin "aws" {

  # up to 250 functions concurrently across all connections
  limiter "aws_global_concurrency" {
    max_concurrency = 250
  }

  # up to 1000 functions per second in us-east-1 for each connection
  limiter "aws_rate_limit_us_east_1" {
    bucket_size = 1000
    fill_rate   = 1000
    scope       = ["connection", "region"]
    where       = "region = 'us-east-1'"
  }

  # up to 200 functions per second in regions OTHER than us-east-1
  # for each connection
  limiter "aws_rate_limit_non_us_east_1" {
    bucket_size = 200
    fill_rate   = 200
    scope       = ["connection", "region"]
    where       = "region <> 'us-east-1'"
  }

}