Add event support #315
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Add event support #315
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* Add a dependency on 'blinker' to provide signal support.
* Add 'perfkitbenchmarker.events' module, which defines a set of events
for subscription.
* Switch dstat collector to use {before,after}_phase events to
start/stop dstat.
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@klausw: do you have time to look this over? |
| sample_created = _events.signal('sample-created', doc=""" | ||
| Called with sample object and benchmark spec. | ||
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| Signal sent immediately after a sample is created by a publisher. |
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Clarify if the sample is mutable or not? Is it ok to add metadata and expect it'll be stored?
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It is mutable; now noted.
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LGTM overall, the event system looks like a nice abstraction. What's the semantics for failing hooks? For example, if a subscriber throws an exception in a before-phase hook, does that get propagated or ignored? |
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Errors in subscribers are propagated. I'll note this in |
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LGTM |
klausw
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Jul 9, 2015
Release 0.18.0. (See also #369 which includes this change log with clickable GH-* links.) * New features: * Support OpenStack as cloud provider (GH-305, GH-353, thanks @kivio and @mateusz-blaszkowski) * Support Rackspace as cloud provider (GH-336, thanks @meteorfox and @jrperritt) * Add support for ContainerizedVM using docker exec (GH-333, thanks @gablg1) * Windows guest VM support on Static VM (GH-350), Azure (GH-349, GH-374), AWS (GH-347), and GCE (GH-338) * Add NTttcp Windows networking benchmark (GH-348) * Enhancements: * Support using proxies in VMs (GH-339, GH-337, thanks @kivio) * Enable optional migration on GCE (GH-343) * Execute long running commands via a remote agent (GH-310) * Add resource creation/deletion times to logs (GH-316) * Bugfixes and maintenance updates: * Update PKB to work with Azure version 0.9.3 (GH-312) * Fix AWS CLI usage on Windows host (GH-313) * Auto-fetch AMI IDs for AWS images (GH-364) * Fix publisher missing info for default image and machine type (GH-357) * Fix 'no attribute pkb_thread_log_context' error for sub-thread logs (GH-322) * Benchmark-specific changes: * aerospike: config/flag handling bugfixes (GH-367, GH-360, GH-354) * cassandra_ycsb: move num_vms prerequisite check * fio: add latency percentiles for results (GH-344) * hadoop_terasort: Fix bad SSH option (GH-328) * iperf: add lower bounds to arguments (GH-314) * iperf: add timeout to parallel benchmark runs to handle iperf hangs (GH-375) * netperf: Support confidence intervals, increase test length, report stddev (GH-317, GH-306) * ycsb: Drop unaggregatable results from samples (GH-324) * Development and testing: * **Breaking Change** Automated testing now uses `tox` (GH-330) * Refactored hook scripts, including new opt-in pre-push hook (GH-363) * Use travis for CI testing (GH-340) * Speed up tests using timeouts (GH-299) * Internals: * Move defaults from benchmark_spec to VM classes, move network instantiation out of benchmark spec (GH-342) * Add event hook support (GH-315) * Refactor VM classes (GH-321)
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blinkerto provide signal support.perfkitbenchmarker.eventsmodule, which defines a set of eventsfor subscription.
dstatcollector to use{before,after}_phaseevents tostart/stop dstat.
See #205.