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Postgres sync engine. Sync little subsets of your Postgres data into local apps and services.
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Files
lib/electric/telemetry/open_telemetry/resource_detector.ex
defmodule Electric.Telemetry.OpenTelemetry.ResourceDetector do
@behaviour :otel_resource_detector
# A resource detector is called inside a one-off process and has 5-6 seconds to return
# the resource.
#
# We need to wait just long enough for the OTP application callback to persist
# an installation_id to the KV store.
def get_resource(_config) do
{m, f, a} = Electric.Config.get_env(:persistent_kv)
kv = apply(m, f, [a])
installation_id = poll_installation_id(kv, 100)
:otel_resource.create("instance.installation_id": installation_id)
end
defp poll_installation_id(kv, sleep_ms) do
try do
Electric.Config.installation_id!(kv)
rescue
_ ->
Process.sleep(sleep_ms)
poll_installation_id(kv, sleep_ms)
end
end
end