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28292d2759
Previously we had many places in the app that called `hostname` to get hostname of a server. This commit replaces the pattern in 2 ways 1. We cache the result in `Discourse.os_hostname` so it is only ever called once 2. We prefer to use Socket.gethostname which avoids making a shell command This improves performance as we are not spawning hostname processes throughout the app lifetime
35 lines
680 B
Ruby
35 lines
680 B
Ruby
# frozen_string_literal: true
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class MessageBusDiags
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@host_info = {}
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def self.my_id
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@my_id ||= "#{Discourse.os_hostname}-#{Process.pid}"
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end
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def self.seen_host(name)
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@host_info[name] = DateTime.now
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end
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def self.establish_peer_names
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MessageBus.publish "/server-name", channel: "/server-name-reply/#{my_id}"
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end
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def self.seen_hosts
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@host_info
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end
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unless @subscribed
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MessageBus.subscribe "/server-name-reply/#{my_id}" do |msg|
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MessageBusDiags.seen_host(msg.data)
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end
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MessageBus.subscribe "/server-name" do |msg|
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MessageBus.publish msg.data["channel"], MessageBusDiags.my_id
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end
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@subscribed = true
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end
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end
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