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https://github.com/RGBCube/serenity
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ConfigServer+LibConfig: Add way for clients to listen for config changes
This patch adds a Config::Listener abstract class that anyone can inherit from and receive notifications when configuration values change. We don't yet monitor file system changes, so these only work for changes made by ConfigServer itself. In order to receive these notifications, clients must monitor the domain by calling monitor_domain(). Only pledged domains can be monitored. Note that the client initiating the change does not get notified.
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9 changed files with 188 additions and 15 deletions
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@ -5,6 +5,7 @@
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*/
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#include <LibConfig/Client.h>
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#include <LibConfig/Listener.h>
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namespace Config {
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@ -24,6 +25,11 @@ void Client::pledge_domains(Vector<String> const& domains)
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async_pledge_domains(domains);
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}
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void Client::monitor_domain(String const& domain)
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{
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async_monitor_domain(domain);
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}
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String Client::read_string(StringView domain, StringView group, StringView key, StringView fallback)
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{
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return read_string_value(domain, group, key).value_or(fallback);
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@ -54,4 +60,25 @@ void Client::write_bool(StringView domain, StringView group, StringView key, boo
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async_write_bool_value(domain, group, key, value);
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}
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void Client::notify_changed_string_value(String const& domain, String const& group, String const& key, String const& value)
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{
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Listener::for_each([&](auto& listener) {
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listener.config_string_did_change(domain, group, key, value);
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});
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}
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void Client::notify_changed_i32_value(String const& domain, String const& group, String const& key, i32 value)
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{
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Listener::for_each([&](auto& listener) {
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listener.config_i32_did_change(domain, group, key, value);
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});
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}
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void Client::notify_changed_bool_value(String const& domain, String const& group, String const& key, bool value)
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{
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Listener::for_each([&](auto& listener) {
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listener.config_bool_did_change(domain, group, key, value);
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});
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}
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}
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