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[tor-commits] [sbws/master] docs: explain how sbws is initialized

To: tor-commits@xxxxxxxxxxxxxxxxxxxx
Subject: [tor-commits] [sbws/master] docs: explain how sbws is initialized
From: juga@xxxxxxxxxxxxxx
Date: Sat, 23 Feb 2019 10:57:25 +0000 (UTC)
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Delivery-date: Sat, 23 Feb 2019 05:57:48 -0500
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Patch-author: juga0 <juga@xxxxxxxxxx>
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commit ad9b53e831dfe2b945a21e282cd63bc858dd1153
Author: juga0 <juga@xxxxxxxxxx>
Date:   Thu Feb 7 10:24:31 2019 +0000

    docs: explain how sbws is initialized
---
 docs/source/data/scanner.dia                  | Bin 0 -> 1997 bytes
 docs/source/data/use_cases_data_sources.dia   | Bin 0 -> 1743 bytes
 docs/source/images/scanner.svg                | 248 ++++++++++++++++
 docs/source/images/use_cases_classes.svg      | 401 ++++++++++++++++++++++++++
 docs/source/images/use_cases_data_sources.svg | 291 +++++++++++++++++++
 docs/source/specification.rst                 |  49 +++-
 6 files changed, 985 insertions(+), 4 deletions(-)

diff --git a/docs/source/data/scanner.dia b/docs/source/data/scanner.dia
new file mode 100644
index 0000000..16bc840
Binary files /dev/null and b/docs/source/data/scanner.dia differ
diff --git a/docs/source/data/use_cases_data_sources.dia b/docs/source/data/use_cases_data_sources.dia
new file mode 100644
index 0000000..b111ab8
Binary files /dev/null and b/docs/source/data/use_cases_data_sources.dia differ
diff --git a/docs/source/images/scanner.svg b/docs/source/images/scanner.svg
new file mode 100644
index 0000000..8872437
--- /dev/null
+++ b/docs/source/images/scanner.svg
@@ -0,0 +1,248 @@
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diff --git a/docs/source/specification.rst b/docs/source/specification.rst
index ee99f3d..4ad474c 100644
--- a/docs/source/specification.rst
+++ b/docs/source/specification.rst
@@ -70,10 +70,51 @@ ever measured within the validity period into a single file for the tor process
 the bandwidth authority is running to read.  The bandwidth authority includes
 these aggregated results in its votes.
 
-How it all works
-----------------
-
-We now describe various core parts of sbws.
+Running the scanner
+---------------------
+Overview
+~~~~~~~~~
+
+The :term:`scanner` obtain a list of relays from the Tor network.
+It measures the bandwidth of each relay by creating a two hop circuit with the
+relay to measure and download data from a :term:`destination` Web Server.
+The :term:`generator` creates a :term:`bandwidth list file` that is read
+by a :term:`directory authority` and used to report relays' bandwidth in its
+vote.
+
+.. image:: ./images/scanner.svg
+   :height: 200px
+   :align: center
+
+Intialization
+~~~~~~~~~~~~~~
+
+.. At some point it should be able to get environment variables
+
+#. Parse the command line arguments and configuration files.
+#. Launch a Tor thread with an specific configuration or connect to a running
+   Tor daemon that is running with a suitable configuration.
+#. Obtain the list of relays in the Tor network from the Tor consensus and
+   descriptor documents.
+#. Read and parse the old bandwidth measurements stored in the file system.
+#. Select a subset of the relays to be measured next, ordered by:
+
+   #. relays not measured.
+   #. measurements age.
+
+.. image:: ./images/use_cases_data_sources.svg
+   :alt: data sources
+   :height: 200px
+   :align: center
+
+Classes used in the initialization:
+
+.. image:: ./images/use_cases_classes.svg
+   :alt: classes initializing data
+   :height: 300px
+   :align: center
+
+Source code: :func:`sbws.core.scanner.run_speedtest`
 
 Simple relay prioritization
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~



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