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Changes to support nested conditionals #24

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Changes to support nested conditionals #24

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162 changes: 122 additions & 40 deletions logstash/map.jinja
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
{% set logstash = salt['grains.filter_by']({
{%- set logstash = salt['grains.filter_by']({
'Debian': {
'use_upstream_repo': True,
'pkg': 'logstash',
Expand All @@ -14,52 +14,134 @@
'indent': 4
}
}, merge=salt['pillar.get']('logstash')) %}

{%- macro output_indented(col, string) %}
{{ string|indent(col, true) -}}
{%- endmacro %}

{% macro format_logstash_config(plugin_type, plugin_array) %}
{%- set col = 0 %}
{{- output_indented(col, plugin_type + ' {') }}
{%- set col = col + logstash.indent %}
{%- for plugin in plugin_array %}
{%- if plugin.cond is defined %}
{{- output_indented(col, (plugin.cond + " {")) }}
{%- set col = col + logstash.indent %}
{%- endif %}
{{- output_indented(col, (plugin.plugin_name + " {")) }}
{#-
Format Logstash Config Files #}
{%- macro format_logstash_config(plugin_type, plugin_array) %}
{%- set col = 0 %}
{{- output_indented(col, plugin_type + ' {') }}
{%- set col = col + logstash.indent %}
{%- for key, value in plugin.items() %}
{%- if key == 'plugin_name' or key == 'cond' %} {#pass#}
{%- elif value is sameas True or value is sameas False %}
{{- output_indented(col, (key + ' => ' + value|string|lower)) }}
{%- elif value is string or value is number %}
{{- output_indented(col, (key + ' => "' + value|string + '"')) }}
{%- elif value is mapping %}
{{- output_indented(col, (key + ' => {')) }}
{%- set col = col + logstash.indent %}
{%- for attr_key, attr_value in value.items() %}
{{- output_indented(col, (attr_key + ' => "' + attr_value + '"')) }}
{%- for plugin in plugin_array %}
{{- format_plugin(col, plugin) }}
{%- endfor %}
{%- set col = col - logstash.indent %}
{{- output_indented(col, '}') }}
{%- endmacro %}
{#-
Format Plugins #}
{% macro format_plugin(col, plugin) %}
{#-
Format Conditionals #}
{%- if plugin.plugin_name == 'conditional' %}
{{- format_if(col, plugin) }}
{%- if plugin.elseif is defined %}
{%- for plugin in plugin.elseif %}
{{- format_elseif(col, plugin) }}
{%- endfor %}
{%- set col = col - logstash.indent %}
{{- output_indented(col, '}') }}
{%- elif value is iterable %}
{{- output_indented(col, key + ' => [') }}
{%- endif %}
{%- if plugin.else is defined %}
{{- format_else(col, plugin) }}
{%- endif %}
{#-
Format Plugins #}
{%- else %}
{%- if plugin.cond is defined %} {# Support old style conditionals #}
{{- output_indented(col, (plugin.cond + " {")) }}
{%- set col = col + logstash.indent %}
{%- for item in value %}
{{- output_indented(col, '"' + item + '"') }}{%- if loop.last == false %},{%- endif -%}
{%- endfor %}
{%- endif %}
{{- output_indented(col, (plugin.plugin_name + ' {')) }}
{%- set col = col + logstash.indent %}
{%- for key, value in plugin.items() %}
{%- if key == 'plugin_name' or key == 'cond' %} {#pass#}
{#-
Format Boolean Values #}
{%- elif value is sameas True or value is sameas False %}
{{- output_indented(col, (key + ' => ' + value|string|lower)) }}
{#-
Format Strings and Numbers #}
{%- elif value is string or value is number %}
{{- output_indented(col, (key + ' => "' + value|string + '"')) }}
{#-
Format Mappings #}
{%- elif value is mapping %}
{{- output_indented(col, (key + ' => {')) }}
{%- set col = col + logstash.indent %}
{%- for attr_key, attr_value in value.items() %}
{{- output_indented(col, (attr_key + ' => "' + attr_value + '"')) }}
{%- endfor %}
{%- set col = col - logstash.indent %}
{{- output_indented(col, '}') }}
{#-
Format Lists #}
{%- elif value is iterable %}
{{- output_indented(col, key + ' => [') }}
{%- set col = col + logstash.indent %}
{%- for item in value %}
{{- output_indented(col, '"' + item + '"') }}{%- if loop.last == false %},{%- endif -%}
{%- endfor %}
{%- set col = col - logstash.indent %}
{{- output_indented(col, ']') }}
{%- endif %}
{%- endfor %}
{%- if plugin.cond is defined %} {# Support old style conditionals #}
{%- set col = col - logstash.indent %}
{{- output_indented(col, ']') }}
{{- output_indented(col, "}") }}
{%- endif %}
{%- endfor %}
{%- set col = col - logstash.indent %}
{{- output_indented(col, '}') }}
{%- if plugin.cond is defined %}
{%- set col = col - logstash.indent %}
{{- output_indented(col, '}') }}
{%- endif %}
{%- endmacro %}
{#-
Format If #}
{%- macro format_if(col, plugin) %}
{{- output_indented(col, 'if ' + plugin.if.cond + ' {') }}
{%- set col = col + logstash.indent %}
{%- for p in plugin.if.then %}
{{- format_plugin(col, p) }}
{%- endfor %}
}
{%- set col = col - logstash.indent %}
{{- output_indented(col, '}') }}
{%- endmacro %}
{#-
Format Else If #}
{%- macro format_elseif(col, plugin) %}
{{- output_indented(col, 'elseif ' + plugin.cond + ' {') }}
{%- set col = col + logstash.indent %}
{%- for p in plugin.then %}
{{- format_plugin(col, p) }}
{%- endfor %}
{%- set col = col - logstash.indent %}
{{- output_indented(col, '}') }}
{%- endmacro %}
{#-
Format Else #}
{%- macro format_else(col, plugin) %}
{{- output_indented(col, 'else {') }}
{%- set col = col + logstash.indent %}
{%- for p in plugin.else.then %}
{{- format_plugin(col, p) }}
{%- endfor %}
{%- set col = col - logstash.indent %}
{{- output_indented(col, '}') }}
{%- endmacro %}
{#-
Format Conditionals #}
{%- macro format_conditional(col, plugin, verb) %}
{%- if verb == 'if' %}
{{- output_indented(col, verb + ' ' + plugin[verb].cond + ' {') }}
{%- elif verb == 'elseif' %}
{{- output_indented(col, verb + ' ' + plugin.cond + ' {') }}
{%- elif verb == 'else' %}
{{- output_indented(col, verb + ' {') }}
{%- endif %}
{%- set col = col + logstash.indent %}
{%- for p in plugin[verb].then %}
{{- format_plugin(col, p) }}
{%- endfor %}
{%- set col = col - logstash.indent %}
{{- output_indented(col, '}') }}
{%- endmacro %}
{#-
Output Indented #}
{%- macro output_indented(col, string) %}
{{ string|indent(col, true) -}}
{%- endmacro %}
63 changes: 39 additions & 24 deletions pillar.example
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Original file line number Diff line number Diff line change
@@ -1,39 +1,54 @@
---
logstash:
pkgstate: latest
indent: 2
inputs:
-
plugin_name: file
- plugin_name: file
path:
- /var/log/syslog
- /var/log/auth.log
type: syslog
filters:
-
plugin_name: grok
cond: 'if [type] == "syslog"'
match:
message: '%{SYSLOGTIMESTAMP:syslog_timestamp} %{SYSLOGHOST:syslog_hostname} %{DATA:syslog_program}(?:\[%{POSINT:syslog_pid}\])?: %{GREEDYDATA:syslog_message}'
add_field:
received_at: '%{@timestamp}'
received_from: '%{host}'
-
plugin_name: grok
cond: 'else if [type] == "nginx"'
match:
message: '%{IPORHOST:clientip} %{USER:ident} %{USER:auth} \[%{HTTPDATE:timestamp}\] \"(?:%{WORD:verb} %{URIPATHPARAM:request}(?: HTTP/%{NUMBER:httpversion})?|-)\" %{NUMBER:response} (?:%{NUMBER:bytes}|-) \"(?:%{URI:referrer}|-)\" %{QS:agent}'
add_field:
received_at: '%{@timestamp}'
received_from: '%{host}'
-
plugin_name: date
- plugin_name: conditional
if:
cond: '[type] == "syslog"'
then:
- plugin_name: grok
match:
message: '%{SYSLOGTIMESTAMP:syslog_timestamp} %{SYSLOGHOST:syslog_hostname} %{DATA:syslog_program}(?:\[%{POSINT:syslog_pid}\])?: %{GREEDYDATA:syslog_message}'
add_field:
received_at: '%{@timestamp}'
received_from: '%{host}'
- plugin_name: date
match:
- 'syslog_timestamp'
- 'MMM d HH:mm:ss'
- 'MMM dd HH:mm:ss'
outputs:
-
plugin_name: lumberjack
- plugin_name: lumberjack
hosts:
- logs.example.com
port: 5000
ssl_certificate: /etc/ssl/certs/lumberjack.crt
ssl_certificate: /etc/ssl/certs/lumberjack.crt
- plugin_name: conditional
if:
cond: '[type] == "syslog"'
then:
- plugin_name: conditional
if:
cond: '"CRITICAL" in [syslog_message]'
then:
- plugin_name: email
to: '[email protected]'
elseif:
- cond: '"ERROR" in [syslog_message]'
then:
- plugin_name: email
to: '[email protected]'
- cond: '"WARN" in [syslog_message]'
then:
- plugin_name: email
to: '[email protected]'
else:
then:
- plugin_name: email
to: '[email protected]'