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Add distributed tracing (#399)

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This change utilizes OpenTelemetry's automatic instrumentation to add
distributed tracing capabilities to VMPooler. This is a non-breaking
change as traces are processed in noop mode by default.
This commit is contained in:
Gene Liverman 2020-09-17 15:35:21 -04:00 • committed by GitHub
parent 8dda72ebb3
commit 8f3039e321
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6 changed files with 140 additions and 15 deletions
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19
bin/vmpooler
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@ -2,30 +2,39 @@
# frozen_string_literal: true
require 'vmpooler'
require 'vmpooler/version'
config = Vmpooler.config
logger_file = config[:config]['logfile']
prefix = config[:config]['prefix']
redis_host = config[:redis]['server']
redis_port = config[:redis]['port']
redis_password = config[:redis]['password']
redis_connection_pool_size = config[:redis]['connection_pool_size']
redis_connection_pool_timeout = config[:redis]['connection_pool_timeout']
redis_reconnect_attempts = config[:redis]['reconnect_attempts']
logger_file = config[:config]['logfile']
tracing_enabled = config[:tracing]['enabled']
tracing_jaeger_host = config[:tracing]['jaeger_host']
logger = Vmpooler::Logger.new logger_file
metrics = Vmpooler::Metrics.init(logger, config)
version = Vmpooler::VERSION
startup_args = ARGV
Vmpooler.configure_tracing(startup_args, prefix, tracing_enabled, tracing_jaeger_host, version)
torun_threads = []
if ARGV.count == 0
torun = %i[api manager]
else
torun = []
torun << :api if ARGV.include? 'api'
torun << :manager if ARGV.include? 'manager'
torun << :api if ARGV.include?('api')
torun << :manager if ARGV.include?('manager')
exit(2) if torun.empty?
end
if torun.include? :api
if torun.include?(:api)
api = Thread.new do
redis = Vmpooler.new_redis(redis_host, redis_port, redis_password)
Vmpooler::API.execute(torun, config, redis, metrics, logger)
@ -39,7 +48,7 @@ elsif metrics.respond_to?(:setup_prometheus_metrics)
torun_threads << prometheus_only_api
end
if torun.include? :manager
if torun.include?(:manager)
manager = Thread.new do
Vmpooler::PoolManager.new(
config,