From e23fdcbb9ef4c7c3e53723c2a155a709c2c886f7 Mon Sep 17 00:00:00 2001
From: DanB <danb@cgrates.org>
Date: Sun, 15 Apr 2018 19:28:33 +0200
Subject: [PATCH] Adding FilterS to documentation

---
 docs/advanced.rst |  2 +-
 docs/conf.py      |  8 +++----
 docs/filters.rst  | 58 +++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 63 insertions(+), 5 deletions(-)
 create mode 100644 docs/filters.rst

diff --git a/docs/advanced.rst b/docs/advanced.rst
index 7a6eebae4..8c88691e7 100644
--- a/docs/advanced.rst
+++ b/docs/advanced.rst
@@ -9,8 +9,8 @@
    cdrclient
    cdrexporter
    cdrstats
-   lcr
    derived_charging
    ratinglogic
+   filters
 
 
diff --git a/docs/conf.py b/docs/conf.py
index f6b9f8892..b7b6c3724 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -178,8 +178,8 @@ htmlhelp_basename = 'CGRatesdoc'
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title, author, documentclass [howto/manual]).
 latex_documents = [
-  ('index', 'CGRates.tex', u'CGRates Documentation',
-   u'Radu Ioan Fericean/Dan Christian Bogos', 'manual'),
+  ('index', 'CGRates.tex', u'CGRateS Documentation',
+   u'Dan Christian Bogos', 'manual'),
 ]
 
 # The name of an image file (relative to this directory) to place at the top of
@@ -211,8 +211,8 @@ latex_documents = [
 # One entry per manual page. List of tuples
 # (source start file, name, description, authors, manual section).
 man_pages = [
-    ('index', 'cgrates', u'CGRates Documentation',
-     [u'Radu Ioan Fericean'], 1)
+    ('index', 'cgrates', u'CGRateS Documentation',
+     [u'Dan Christian Bogos'], 1)
 ]
 
 # extensions = ['autoapi.extension']
diff --git a/docs/filters.rst b/docs/filters.rst
new file mode 100644
index 000000000..4bd0af089
--- /dev/null
+++ b/docs/filters.rst
@@ -0,0 +1,58 @@
+FilterS 
+=======
+
+**FilterS** are code blocks applied to generic events (hashmaps) in order to allow/deny further processing.
+
+A Tenant will define multiple Filter profiles via .csv or API calls. The Filter profile ID is unique within a tenant but it can be repeated over multiple Tenants.
+
+In order to be used in event processing a Filter profile will be attached inside another subsystem profile definition, otherwise Filter profile will have no effect on it's own. 
+A Filter profile can be shared between multiple subsystem profile definitions.
+
+
+Filter profile 
+--------------
+
+Definition::
+
+ type Filter struct {
+	Tenant             string
+	ID                 string
+	Rules              []*FilterRule
+	ActivationInterval *utils.ActivationInterval
+ }
+
+
+A Filter profile can contain any number of Filter rules and all of them must pass in order for the filter profile to pass.
+
+A Filter profile can be activated on specific interval, if multiple filters are used within a subsystem profile at least one needs to be active and passing in order for the subsystem profile to pass the event.
+
+
+Filter rule 
+-----------
+
+Definition::
+
+ type FilterRule struct {
+	Type            string              // Filter type (*string, *timing, *rsr_filters, *stats, *lt, *lte, *gt, *gte)
+	FieldName       string              // Name of the field providing us the Values to check (used in case of some )
+	Values          []string            // Filter definition
+ }
+
+
+The matching logic of each FilterRule is given by it's type.
+
+The following types are implemented:
+
+- *\*string* will match in full the *FieldName* with at least one value defined inside *Values*. Any of them matching will match the FilterRule. 
+   It is indexed for performance and, in order to be enabled, the subsystem configuration where the Filter profile is used needs to have the parameter *string_indexed_fields* nil or contain the Filter profile ID inside.
+
+- *\*prefix* will match at beginning of *FieldName* one of the values defined inside *Values*.
+   It is indexed for performance and, in order to be enabled, the subsystem configuration where the Filter profile is used needs to have the parameter *prefix_indexed_fields* nil or contain the Filter profile ID inside.
+
+- *\*timings* will compare the time contained in *FieldName* with one of the TimingIDs defined in Values.
+
+- *\*destinations* will make sure that the *FieldName* is a prefix contained inside one of the destination IDs as *Values*.
+
+- *\*rsr* will match the *RSRRules* defined in Values. The field name is taken out of *RSRRule.ID* and matching logic is done against *RSRRule.Filters*
+
+- *\*lt* (less than), *\*lte* (less than or equal), *\*gt* (greather than), *\*gte* (greather than or equal) are comparison operators and they pass if at least one of the values defined in *Values* are passing for the *FieldName* of event. The operators are able to compare string, float, int, time.Time, time.Duration, however both types need to be the same, otherwise the filter will raise *incomparable* as error.
\ No newline at end of file