From e9e3a3fee1ed25a3b1bf53ec65eaa09c1124c735 Mon Sep 17 00:00:00 2001
From: Andreas Motl <andreas@getkotori.org>
Date: Wed, 3 Mar 2021 23:59:21 +0100
Subject: [PATCH 1/2] Improve README: Add another recipe for advanced schema
 manipulation

---
 README.md | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index e2cf2a0..ed44866 100644
--- a/README.md
+++ b/README.md
@@ -50,8 +50,8 @@ influxdb-fetcher \
 ### Rename fields
 
 As the line protocol format is pure ASCII, it is easy to use standard Unix tools
-like `sed` to manipulate the content.
-
+like `sed` to manipulate the content. For more advanced manipulations, we
+recommend to use Perl. Those are some examples which roughly outline the process.
 
 ```sh
 # Fetch data.
@@ -60,13 +60,24 @@ influxdb-fetcher ... > data.wireproto
 # Manipulate schema: Rename field.
 sed -i -e "s/foo\=\([0-9.]*\)/bar=\1/g" data.wireproto
 
+# Manipulate schema: Advanced field renaming with negative lookbehind.
+# This renames all fields not already prefixed with `SonoffSC.`.
+perl -pi -e "
+  s/(?<!SonoffSC\.)AirQuality/SonoffSC\.AirQuality/; \
+  s/(?<!SonoffSC\.)Humidity/SonoffSC\.Humidity/; \
+  s/(?<!SonoffSC\.)Light/SonoffSC\.Light/; \
+  s/(?<!SonoffSC\.)Noise/SonoffSC\.Noise/; \
+  s/(?<!SonoffSC\.)Temperature/SonoffSC\.Temperature/; \
+  " \
+  test_sonoffsc_sensors.lineproto
+
 # Manipulate data: Cast from Int64 to Float.
 sed -i -e "s/value\=\([0-9]*\)i/value=\1/g" data.wireproto
 
 # Upload data to different destination.
 curl -u login:password -i -POST \
-    "http://dest-influxdb.example.org:8086/write?db=new_db" \
-    --data-binary @data.wireproto
+  "http://dest-influxdb.example.org:8086/write?db=new_db" \
+  --data-binary @data.wireproto
 ```
 
 

From 64ba1980cba5984ee3add58d46da0624f3d4a7f3 Mon Sep 17 00:00:00 2001
From: Andreas Motl <andreas@getkotori.org>
Date: Thu, 4 Mar 2021 00:02:21 +0100
Subject: [PATCH 2/2] Improve README: Rename lineprotocol export file to
 `data.lineproto`

---
 README.md | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/README.md b/README.md
index ed44866..6b5b9bb 100644
--- a/README.md
+++ b/README.md
@@ -55,10 +55,10 @@ recommend to use Perl. Those are some examples which roughly outline the process
 
 ```sh
 # Fetch data.
-influxdb-fetcher ... > data.wireproto
+influxdb-fetcher ... > data.lineproto
 
 # Manipulate schema: Rename field.
-sed -i -e "s/foo\=\([0-9.]*\)/bar=\1/g" data.wireproto
+sed -i -e "s/foo\=\([0-9.]*\)/bar=\1/g" data.lineproto
 
 # Manipulate schema: Advanced field renaming with negative lookbehind.
 # This renames all fields not already prefixed with `SonoffSC.`.
@@ -69,15 +69,15 @@ perl -pi -e "
   s/(?<!SonoffSC\.)Noise/SonoffSC\.Noise/; \
   s/(?<!SonoffSC\.)Temperature/SonoffSC\.Temperature/; \
   " \
-  test_sonoffsc_sensors.lineproto
+  data.lineproto
 
 # Manipulate data: Cast from Int64 to Float.
-sed -i -e "s/value\=\([0-9]*\)i/value=\1/g" data.wireproto
+sed -i -e "s/value\=\([0-9]*\)i/value=\1/g" data.lineproto
 
 # Upload data to different destination.
 curl -u login:password -i -POST \
   "http://dest-influxdb.example.org:8086/write?db=new_db" \
-  --data-binary @data.wireproto
+  --data-binary @data.lineproto
 ```