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(* Module: Redis Parses Redis's configuration files Author: Marc Fournier <marc.fournier@camptocamp.com> About: Reference This lens is based on Redis's default redis.conf About: Usage Example (start code) augtool> set /augeas/load/Redis/incl "/etc/redis/redis.conf" augtool> set /augeas/load/Redis/lens "Redis.lns" augtool> load augtool> get /files/etc/redis/redis.conf/vm-enabled /files/etc/redis/redis.conf/vm-enabled = no augtool> print /files/etc/redis/redis.conf/rename-command[1]/ /files/etc/redis/redis.conf/rename-command /files/etc/redis/redis.conf/rename-command/from = "CONFIG" /files/etc/redis/redis.conf/rename-command/to = "CONFIG2" augtool> set /files/etc/redis/redis.conf/activerehashing no augtool> save Saved 1 file(s) augtool> set /files/etc/redis/redis.conf/save[1]/seconds 123 augtool> set /files/etc/redis/redis.conf/save[1]/keys 456 augtool> save Saved 1 file(s) (end code) The <Test_Redis> file also contains various examples. About: License This file is licensed under the LGPL v2+, like the rest of Augeas. *) module Redis = autoload xfm let k = Rx.word let v = /[^ \t\n'"]+/ let comment = Util.comment let empty = Util.empty let indent = Util.indent let eol = Util.eol let del_ws_spc = Util.del_ws_spc let dquote = Util.del_str "\"" (* View: standard_entry A standard entry is a key-value pair, separated by blank space, with optional blank spaces at line beginning & end. The value part can be optionnaly enclosed in single or double quotes. Comments at end-of-line ar NOT allowed by redis-server. *) let standard_entry = let reserved_k = "save" | "rename-command" | "slaveof" | "client-output-buffer-limit" in let entry_noempty = [ indent . key k . del_ws_spc . Quote.do_quote_opt_nil (store v) . eol ] in let entry_empty = [ indent . key (k - reserved_k) . del_ws_spc . dquote . store "" . dquote . eol ] in entry_noempty | entry_empty let save = /save/ let seconds = [ label "seconds" . Quote.do_quote_opt_nil (store Rx.integer) ] let keys = [ label "keys" . Quote.do_quote_opt_nil (store Rx.integer) ] (* View: save_entry Entries identified by the "save" keyword can be found more than once. They have 2 mandatory parameters, both integers. The same rules as standard_entry apply for quoting, comments and whitespaces. *) let save_entry = [ indent . key save . del_ws_spc . seconds . del_ws_spc . keys . eol ] let slaveof = /slaveof/ let ip = [ label "ip" . Quote.do_quote_opt_nil (store Rx.ip) ] let port = [ label "port" . Quote.do_quote_opt_nil (store Rx.integer) ] (* View: slaveof_entry Entries identified by the "slaveof" keyword can be found more than once. They have 2 mandatory parameters, the 1st one is an IP address, the 2nd one is a port number. The same rules as standard_entry apply for quoting, comments and whitespaces. *) let slaveof_entry = [ indent . key slaveof . del_ws_spc . ip . del_ws_spc . port . eol ] let renamecmd = /rename-command/ let from = [ label "from" . Quote.do_quote_opt_nil (store Rx.word) ] let to = [ label "to" . Quote.do_quote_opt_nil (store Rx.word) ] (* View: save_entry Entries identified by the "rename-command" keyword can be found more than once. They have 2 mandatory parameters, both strings. The same rules as standard_entry apply for quoting, comments and whitespaces. *) let renamecmd_entry = [ indent . key renamecmd . del_ws_spc . from . del_ws_spc . to . eol ] let cobl_cmd = /client-output-buffer-limit/ let class = [ label "class" . Quote.do_quote_opt_nil (store Rx.word) ] let hard_limit = [ label "hard_limit" . Quote.do_quote_opt_nil (store Rx.word) ] let soft_limit = [ label "soft_limit" . Quote.do_quote_opt_nil (store Rx.word) ] let soft_seconds = [ label "soft_seconds" . Quote.do_quote_opt_nil (store Rx.integer) ] (* View: client_output_buffer_limit_entry Entries identified by the "client-output-buffer-limit" keyword can be found more than once. They have four mandatory paramters, of which the first is a string, the last one is an integer and the others are either integers or words, although redis is very liberal and takes "4242yadayadabytes" as a valid limit. The same rules as standard_entry apply for quoting, comments and whitespaces. *) let client_output_buffer_limit_entry = [ indent . key cobl_cmd . del_ws_spc . class . del_ws_spc . hard_limit . del_ws_spc . soft_limit . del_ws_spc . soft_seconds . eol ] let entry = standard_entry | save_entry | renamecmd_entry | slaveof_entry | client_output_buffer_limit_entry (* View: lns The Redis lens *) let lns = (comment | empty | entry )* let filter = incl "/etc/redis/redis.conf" let xfm = transform lns filter