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authorJavier Sánchez Parra <jsanchez@soleta.eu>2022-05-31 12:08:57 +0200
committerJose M. Guisado <jguisado@soleta.eu>2022-06-01 08:51:19 +0200
commita0a3470682852d5f72967553d5debe41e86eca78 (patch)
tree7b3155246a1c5ffee6ed4f5dd442cc6196a4a260 /src/utils.c
parentc0573b9ef05bc1c22a6b5b71c2f73ba18a8696f1 (diff)
#1074 rest: set_mode: add support for different ogserver addresses
Add foreign key "identornos" from table "entornos" to table "ordenadores". A row in table "entornos" represent a valid ogServer address. Multiple ogServer valid addresses can exist when running several instances or a single ogServer instance is exposed to different networks. Can't delete rows in "entornos" table nor update their id (primary key) if the row has any associated clients ({ON UPDATE/ON DELETE} RESTRICT). Allows assigning different but valid ogServer IPs to clients. Enabling support for multiple instances of ogServer (e.g: load balancing) or exposing a single ogServer instance to different networks (e.g: VLAN). Look up for the valid ogServer IP of a given client when changing a client's mode (og_set_client_mode). Determines valid ogServer IP using a JOIN statement. JOIN entornos USING(identorno) Reuses the fetched ip using a statement variable. @serverip:=entornos.ipserveradm For example, for a two VLAN setup: vlan1 ogserver: 192.168.56.10 vlan2 ogserver: 192.168.57.10 The "entornos" table should look like: identorno ipserveradm ... --------- ----------- ... 1 192.168.56.10 ... 2 192.168.57.10 ... And computers in the "ordenadores" table might look like: idordenador identorno ... ---------- --------- ... 1 1 ... 2 1 ... 3 2 ... 4 2 ... ... ... ... Additionally, splits the SQL query for better readability. Co-authored-by: Jose Guisado <jguisado@soleta.eu>
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