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scenario_schema.yaml
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$schema: "https://json-schema.org/draft-04/schema"
$id: "http://schemas.crowdsec.net/schemas/scenario.yaml"
title: "CrowdSec Scenario"
oneOf:
- $ref: "#/$defs/leaky"
- $ref: "#/$defs/counter"
- $ref: "#/$defs/trigger"
- $ref: "#/$defs/conditional"
$defs:
leaky:
type: object
properties:
type:
type: string
enum:
- leaky
description: |
Defines the type of the bucket. Currently three types are
supported : leaky : a leaky bucket that must be configured
with a capacity and a leakspeed trigger : a bucket that
overflows as soon as an event is poured (it is like a leaky
bucket is a capacity of 0) counter : a bucket that only
overflows every duration. It is especially useful to count
things.
leakspeed:
type: string
description: |
Only applies to leaky buckets. A duration that represent how
often an event will be leaking from the bucket.
pattern: >-
^([0-9]+(\.[0-9]+)*d)?([0-9]+(\.[0-9]+)*h)?([0-9]+(\.[0-9]+)*m)?([0-9]+(\.[0-9]+)*s)?([0-9]+(\.[0-9]+)*ms)?([0-9]+(\.[0-9]+)*(us|µs))?([0-9]+(\.[0-9]+)*ns)?$
references:
description: |
Reference to external paper or documentation
anyOf:
- type: string
- type: array
name:
type: string
description: |
"github_account_name/my_scenario_name" or name:
"my_author_name/my_scenario_name" name is mandatory
capacity:
type: integer
description: |
Only applies to leaky buckets. A positive integer
representing the bucket capacity. If there are more than
capacity item in the bucket, it will overflow.
description:
type: string
description: |
The description is mandatory. It is a short description,
probably one sentence, describing what it detects.
filter:
type: string
description: |
filter must be a valid expr expression that will be evaluated
against the event. If filter evaluation returns true or is
absent, event will be pour in the bucket. If filter returns
false or a non-boolean, the event will be skipped for this
bucket.
groupby:
type: string
description: |
An expr expression that must return a string. This string will
be used as a partition for the buckets.
distinct:
type: string
description: |
An expr expression that must return a string. The event will be
poured only if the string is not already present in the bucket.
format:
description: |
CrowdSec has a notion of format support for parsers and
scenarios for compatibility management. Running cscli version
will show you such compatibility matrix :
type: number
minimum: 1.0
labels:
$ref: "#/$defs/labels"
blackhole:
type: string
description: |
A duration for which a bucket will be "silenced" after
overflowing. This is intended to limit / avoid spam of buckets
that might be very rapidly triggered. The blackhole only
applies to the individual bucket rather than the whole
scenario. Must be compatible with golang ParseDuration format.
pattern: >-
^([0-9]+(\.[0-9]+)*d)?([0-9]+(\.[0-9]+)*h)?([0-9]+(\.[0-9]+)*m)?([0-9]+(\.[0-9]+)*s)?([0-9]+(\.[0-9]+)*ms)?([0-9]+(\.[0-9]+)*(us|µs))?([0-9]+(\.[0-9]+)*ns)?$
debug:
type: boolean
description: |
If set to to true, enabled scenario level debugging. It is meant
to help understanding scenario behavior by providing contextual
reprocess:
type: boolean
description: |
If set to true, the resulting overflow will be sent again in the
scenario/parsing pipeline. It is useful when you want to have
further scenarios that will rely on past-overflows to take
decision
cache_size:
type: number
description: |
By default, a bucket holds capacity events "in memory". However,
for a number of cases, you don't want this, as it might lead to
excessive memory consumption. By setting cache_size to a
positive integer, we can control the maximum in-memory cache
size of the bucket, without changing its capacity and such. It
is useful when buckets are likely to stay alive for a long time
or ingest a lot of events to avoid storing a lot of events in
memory.
overflow_filter:
type: string
description: |
overflow_filter is an expression that is run when the bucket
overflows. If this expression is present and returns false, the
overflow will be discarded.
cancel_on:
type: string
description: |
cancel_on is an expression that runs on each event poured to the
bucket. If the cancel_on expression returns true, the bucket is
immediately destroyed (and doesn't overflow).
data:
$ref: "#/$defs/data"
scope:
type: object
description: |
While most scenarios might focus on IP addresses, CrowdSec and Bouncers can work with any scope. The scope directive allows you to override the default scope :
type is a string representing the scope name
expression is an expr expression that will be evaluated to fetch the value
properties:
type:
type: string
expression:
type: string
additionalProperties: false
additionalProperties: false
required:
- type
- name
- leakspeed
- description
counter:
type: object
properties:
type:
type: string
enum:
- counter
description: |
Defines the type of the bucket. Currently three types are
supported : leaky : a leaky bucket that must be configured
with a capacity and a leakspeed trigger : a bucket that
overflows as soon as an event is poured (it is like a leaky
bucket is a capacity of 0) counter : a bucket that only
overflows every duration. It is especially useful to count
things.
duration:
type: string
description: |
Only applies to leaky buckets.
A duration that represent how often an event will be leaking from the bucket.
pattern: >-
^([0-9]+(\.[0-9]+)*d)?([0-9]+(\.[0-9]+)*h)?([0-9]+(\.[0-9]+)*m)?([0-9]+(\.[0-9]+)*s)?([0-9]+(\.[0-9]+)*ms)?([0-9]+(\.[0-9]+)*(us|µs))?([0-9]+(\.[0-9]+)*ns)?$
references:
description: |
Reference to external paper or documentation
anyOf:
- type: string
- type: array
name:
type: string
description: |
"github_account_name/my_scenario_name" or name:
"my_author_name/my_scenario_name" name is mandatory
description:
type: string
description: |
The description is mandatory. It is a short description,
probably one sentence, describing what it detects.
filter:
type: string
description: |
filter must be a valid expr expression that will be evaluated
against the event. If filter evaluation returns true or is
absent, event will be pour in the bucket. If filter returns
false or a non-boolean, the event will be skipped for this
bucket.
groupby:
type: string
description: |
An expr expression that must return a string. This string will
be used as a partition for the buckets.
distinct:
type: string
description: |
An expr expression that must return a string. The event will be
poured only if the string is not already present in the bucket.
format:
description: |
CrowdSec has a notion of format support for parsers and
scenarios for compatibility management. Running cscli version
will show you such compatibility matrix :
type: number
minimum: 1.0
labels:
$ref: "#/$defs/labels"
blackhole:
type: string
description: |
A duration for which a bucket will be "silenced" after
overflowing. This is intended to limit / avoid spam of buckets
that might be very rapidly triggered. The blackhole only
applies to the individual bucket rather than the whole
scenario. Must be compatible with golang ParseDuration format.
pattern: >-
^([0-9]+(\.[0-9]+)*d)?([0-9]+(\.[0-9]+)*h)?([0-9]+(\.[0-9]+)*m)?([0-9]+(\.[0-9]+)*s)?([0-9]+(\.[0-9]+)*ms)?([0-9]+(\.[0-9]+)*(us|µs))?([0-9]+(\.[0-9]+)*ns)?$
debug:
type: boolean
description: |
If set to to true, enabled scenario level debugging. It is meant
to help understanding scenario behavior by providing contextual
reprocess:
type: boolean
description: |
If set to true, the resulting overflow will be sent again in the
scenario/parsing pipeline. It is useful when you want to have
further scenarios that will rely on past-overflows to take
decision
cache_size:
type: number
description: |
By default, a bucket holds capacity events "in memory". However,
for a number of cases, you don't want this, as it might lead to
excessive memory consumption. By setting cache_size to a
positive integer, we can control the maximum in-memory cache
size of the bucket, without changing its capacity and such. It
is useful when buckets are likely to stay alive for a long time
or ingest a lot of events to avoid storing a lot of events in
memory.
overflow_filter:
type: string
description: |
overflow_filter is an expression that is run when the bucket
overflows. If this expression is present and returns false, the
overflow will be discarded.
cancel_on:
type: string
description: |
cancel_on is an expression that runs on each event poured to the
bucket. If the cancel_on expression returns true, the bucket is
immediately destroyed (and doesn't overflow).
data:
$ref: "#/$defs/data"
scope:
type: object
description: |
While most scenarios might focus on IP addresses, CrowdSec and Bouncers can work with any scope. The scope directive allows you to override the default scope :
type is a string representing the scope name
expression is an expr expression that will be evaluated to fetch the value
properties:
type:
type: string
expression:
type: string
additionalProperties: false
additionalProperties: false
required:
- type
- name
- duration
- description
trigger:
type: object
properties:
type:
type: string
enum:
- trigger
description: |
Defines the type of the bucket. Currently three types are
supported : leaky : a leaky bucket that must be configured
with a capacity and a leakspeed trigger : a bucket that
overflows as soon as an event is poured (it is like a leaky
bucket is a capacity of 0) counter : a bucket that only
overflows every duration. It is especially useful to count
things.
name:
type: string
description: |
"github_account_name/my_scenario_name" or name:
"my_author_name/my_scenario_name" name is mandatory
references:
description: |
Reference to external paper or documentation
anyOf:
- type: string
- type: array
description:
type: string
description: |
The description is mandatory. It is a short description,
probably one sentence, describing what it detects.
filter:
type: string
description: |
filter must be a valid expr expression that will be evaluated
against the event. If filter evaluation returns true or is
absent, event will be pour in the bucket. If filter returns
false or a non-boolean, the event will be skipped for this
bucket.
groupby:
type: string
description: |
An expr expression that must return a string. This string will
be used as a partition for the buckets.
distinct:
type: string
description: |
An expr expression that must return a string. The event will be
poured only if the string is not already present in the bucket.
format:
description: |
CrowdSec has a notion of format support for parsers and
scenarios for compatibility management. Running cscli version
will show you such compatibility matrix :
type: number
minimum: 1.0
labels:
$ref: "#/$defs/labels"
blackhole:
type: string
description: |
A duration for which a bucket will be "silenced" after
overflowing. This is intended to limit / avoid spam of buckets
that might be very rapidly triggered. The blackhole only
applies to the individual bucket rather than the whole
scenario. Must be compatible with golang ParseDuration format.
pattern: >-
^([0-9]+(\.[0-9]+)*d)?([0-9]+(\.[0-9]+)*h)?([0-9]+(\.[0-9]+)*m)?([0-9]+(\.[0-9]+)*s)?([0-9]+(\.[0-9]+)*ms)?([0-9]+(\.[0-9]+)*(us|µs))?([0-9]+(\.[0-9]+)*ns)?$
debug:
type: boolean
description: |
If set to to true, enabled scenario level debugging. It is meant
to help understanding scenario behavior by providing contextual
reprocess:
type: boolean
description: |
If set to true, the resulting overflow will be sent again in the
scenario/parsing pipeline. It is useful when you want to have
further scenarios that will rely on past-overflows to take
decision
cache_size:
type: number
description: |
By default, a bucket holds capacity events "in memory". However,
for a number of cases, you don't want this, as it might lead to
excessive memory consumption. By setting cache_size to a
positive integer, we can control the maximum in-memory cache
size of the bucket, without changing its capacity and such. It
is useful when buckets are likely to stay alive for a long time
or ingest a lot of events to avoid storing a lot of events in
memory.
overflow_filter:
type: string
description: |
overflow_filter is an expression that is run when the bucket
overflows. If this expression is present and returns false, the
overflow will be discarded.
cancel_on:
type: string
description: |
cancel_on is an expression that runs on each event poured to the
bucket. If the cancel_on expression returns true, the bucket is
immediately destroyed (and doesn't overflow).
data:
$ref: "#/$defs/data"
scope:
type: object
description: |
While most scenarios might focus on IP addresses, CrowdSec
and Bouncers can work with any scope. The scope directive
allows you to override the default scope : type is a string
representing the scope name expression is an expr expression
that will be evaluated to fetch the value
properties:
type:
type: string
expression:
type: string
additionalProperties: false
additionalProperties: false
required:
- type
- name
- description
labels:
type: object
description: |
Labels is a list of label: values that provide context to an
overflow. The labels are (currently) not stored in the database,
nor they are sent to the API. Special labels : The remediation
label, if set to true indicate the the originating IP should be
banned.
patternProperties:
"^.*$":
type:
- string
- boolean
- array
- integer
conditional:
type: object
properties:
type:
type: string
enum:
- conditional
description: |
Defines the type of the bucket. Currently three types are
supported : leaky : a leaky bucket that must be configured
with a capacity and a leakspeed trigger : a bucket that
overflows as soon as an event is poured (it is like a leaky
bucket is a capacity of 0) counter : a bucket that only
overflows every duration. It is especially useful to count
things.
condition:
type: string
description: |
Make the bucket overflow when it returns true. The expression is evaluated each time an event is poured to the bucket.
leakspeed:
type: string
description: |
Only applies to leaky buckets. A duration that represent how
often an event will be leaking from the bucket.
pattern: >-
^([0-9]+(\.[0-9]+)*d)?([0-9]+(\.[0-9]+)*h)?([0-9]+(\.[0-9]+)*m)?([0-9]+(\.[0-9]+)*s)?([0-9]+(\.[0-9]+)*ms)?([0-9]+(\.[0-9]+)*(us|µs))?([0-9]+(\.[0-9]+)*ns)?$
references:
description: |
Reference to external paper or documentation
anyOf:
- type: string
- type: array
name:
type: string
description: |
"github_account_name/my_scenario_name" or name:
"my_author_name/my_scenario_name" name is mandatory
capacity:
type: integer
description: |
Only applies to leaky buckets. A positive integer
representing the bucket capacity. If there are more than
capacity item in the bucket, it will overflow.
description:
type: string
description: |
The description is mandatory. It is a short description,
probably one sentence, describing what it detects.
filter:
type: string
description: |
filter must be a valid expr expression that will be evaluated
against the event. If filter evaluation returns true or is
absent, event will be pour in the bucket. If filter returns
false or a non-boolean, the event will be skipped for this
bucket.
groupby:
type: string
description: |
An expr expression that must return a string. This string will
be used as a partition for the buckets.
distinct:
type: string
description: |
An expr expression that must return a string. The event will be
poured only if the string is not already present in the bucket.
format:
description: |
CrowdSec has a notion of format support for parsers and
scenarios for compatibility management. Running cscli version
will show you such compatibility matrix :
type: number
minimum: 1.0
labels:
$ref: "#/$defs/labels"
blackhole:
type: string
description: |
A duration for which a bucket will be "silenced" after
overflowing. This is intended to limit / avoid spam of buckets
that might be very rapidly triggered. The blackhole only
applies to the individual bucket rather than the whole
scenario. Must be compatible with golang ParseDuration format.
pattern: >-
^([0-9]+(\.[0-9]+)*d)?([0-9]+(\.[0-9]+)*h)?([0-9]+(\.[0-9]+)*m)?([0-9]+(\.[0-9]+)*s)?([0-9]+(\.[0-9]+)*ms)?([0-9]+(\.[0-9]+)*(us|µs))?([0-9]+(\.[0-9]+)*ns)?$
debug:
type: boolean
description: |
If set to to true, enabled scenario level debugging. It is meant
to help understanding scenario behavior by providing contextual
reprocess:
type: boolean
description: |
If set to true, the resulting overflow will be sent again in the
scenario/parsing pipeline. It is useful when you want to have
further scenarios that will rely on past-overflows to take
decision
cache_size:
type: number
description: |
By default, a bucket holds capacity events "in memory". However,
for a number of cases, you don't want this, as it might lead to
excessive memory consumption. By setting cache_size to a
positive integer, we can control the maximum in-memory cache
size of the bucket, without changing its capacity and such. It
is useful when buckets are likely to stay alive for a long time
or ingest a lot of events to avoid storing a lot of events in
memory.
overflow_filter:
type: string
description: |
overflow_filter is an expression that is run when the bucket
overflows. If this expression is present and returns false, the
overflow will be discarded.
cancel_on:
type: string
description: |
cancel_on is an expression that runs on each event poured to the
bucket. If the cancel_on expression returns true, the bucket is
immediately destroyed (and doesn't overflow).
data:
$ref: "#/$defs/data"
scope:
type: object
description: |
While most scenarios might focus on IP addresses, CrowdSec and Bouncers can work with any scope. The scope directive allows you to override the default scope :
type is a string representing the scope name
expression is an expr expression that will be evaluated to fetch the value
properties:
type:
type: string
expression:
type: string
additionalProperties: false
additionalProperties: false
required:
- type
- name
- leakspeed
- description
- condition
data:
type: array
description: |
data allows user to specify an external source of data. This
section is only relevant when cscli is used to install parser
from hub, as it will download the source_url and store it to
dest_file. When the parser is not installed from the hub,
CrowdSec won't download the URL, but the file must exist for the
parser to be loaded correctly.
items:
type: object
properties:
source_url:
type: string
description: |
url to download file from
dest_file:
type: string
description: |
destination to store the downloaded file to
type:
type: string
pattern: "^(string|regexp)$"
additionalProperties: false
description: |
The type is mandatory if you want to evaluate the data in
the file, and should be regex for valid (re2) regular
expression per line or string for string per line. The
regexps will be compiled, the strings will be loaded into
a list and both will be kept in memory. Without specifying
a type, the file will be downloaded and stored as file and
not in memory.
required:
- type
- dest_file
additionalProperties: false