Do not run/enqueue event propagation when a AgentPropagateJob is already enqueued
Fixes the creation of duplicated events caused by Agent.receive! running multiple times concurrently.
Dominik Sander
5 changed files with 56 additions and 6 deletions
+ 8
- 4
app/controllers/agents_controller.rb
@@ -113,11 +113,15 @@ class AgentsController < ApplicationController |
||
| 113 | 113 |
end |
| 114 | 114 |
|
| 115 | 115 |
def propagate |
| 116 |
- details = Agent.receive! # Eventually this should probably be scoped to the current_user. |
|
| 117 |
- |
|
| 118 | 116 |
respond_to do |format| |
| 119 |
- format.html { redirect_back "Queued propagation calls for #{details[:event_count]} event(s) on #{details[:agent_count]} agent(s)" }
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|
| 120 |
- format.json { head :ok }
|
|
| 117 |
+ if AgentPropagateJob.can_enqueue? |
|
| 118 |
+ details = Agent.receive! # Eventually this should probably be scoped to the current_user. |
|
| 119 |
+ format.html { redirect_back "Queued propagation calls for #{details[:event_count]} event(s) on #{details[:agent_count]} agent(s)" }
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|
| 120 |
+ format.json { head :ok }
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| 121 |
+ else |
|
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+ format.html { redirect_back "Event propagation is already scheduled to run." }
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|
| 123 |
+ format.json { head :locked }
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|
| 124 |
+ end |
|
| 121 | 125 |
end |
| 122 | 126 |
end |
| 123 | 127 |
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+ 13
- 1
app/jobs/agent_propagate_job.rb
@@ -1,7 +1,19 @@ |
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| 1 | 1 |
class AgentPropagateJob < ActiveJob::Base |
| 2 |
- queue_as :default |
|
| 2 |
+ queue_as :propagation |
|
| 3 | 3 |
|
| 4 | 4 |
def perform |
| 5 | 5 |
Agent.receive! |
| 6 | 6 |
end |
| 7 |
+ |
|
| 8 |
+ def self.can_enqueue? |
|
| 9 |
+ if Rails.configuration.active_job.queue_adapter == :delayed_job && |
|
| 10 |
+ Delayed::Job.where(failed_at: nil, queue: 'propagation').count > 0 |
|
| 11 |
+ return false |
|
| 12 |
+ elsif Rails.configuration.active_job.queue_adapter == :resque && |
|
| 13 |
+ (Resque.size('propagation') > 0 ||
|
|
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+ Resque.workers.select { |w| w.job && w.job['queue'] && w.job['queue']['propagation'] }.count > 0)
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| 15 |
+ return false |
|
| 16 |
+ end |
|
| 17 |
+ true |
|
| 18 |
+ end |
|
| 7 | 19 |
end |
+ 1
- 0
lib/huginn_scheduler.rb
@@ -155,6 +155,7 @@ class HuginnScheduler < LongRunnable::Worker |
||
| 155 | 155 |
|
| 156 | 156 |
def propagate! |
| 157 | 157 |
with_mutex do |
| 158 |
+ return unless AgentPropagateJob.can_enqueue? |
|
| 158 | 159 |
puts "Queuing event propagation" |
| 159 | 160 |
AgentPropagateJob.perform_later |
| 160 | 161 |
end |
+ 10
- 1
spec/controllers/agents_controller_spec.rb
@@ -68,11 +68,20 @@ describe AgentsController do |
||
| 68 | 68 |
end |
| 69 | 69 |
|
| 70 | 70 |
describe "POST propagate" do |
| 71 |
- it "runs event propagation for all Agents" do |
|
| 71 |
+ before(:each) do |
|
| 72 | 72 |
sign_in users(:bob) |
| 73 |
+ end |
|
| 74 |
+ |
|
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+ it "runs event propagation for all Agents" do |
|
| 73 | 76 |
mock.proxy(Agent).receive! |
| 74 | 77 |
post :propagate |
| 75 | 78 |
end |
| 79 |
+ |
|
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+ it "does not run the propagation when a job is already enqueued" do |
|
| 81 |
+ mock(AgentPropagateJob).can_enqueue? { false }
|
|
| 82 |
+ post :propagate |
|
| 83 |
+ expect(flash[:notice]).to eq('Event propagation is already scheduled to run.')
|
|
| 84 |
+ end |
|
| 76 | 85 |
end |
| 77 | 86 |
|
| 78 | 87 |
describe "GET show" do |
+ 24
- 0
spec/jobs/agent_propagate_job_spec.rb
@@ -0,0 +1,24 @@ |
||
| 1 |
+require 'rails_helper' |
|
| 2 |
+ |
|
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+describe AgentPropagateJob do |
|
| 4 |
+ it "calls Agent.receive! when run" do |
|
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+ mock(Agent).receive! |
|
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+ AgentPropagateJob.new.perform |
|
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+ end |
|
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+ |
|
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+ context "#can_enqueue?" do |
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+ it "is truthy when no propagation job is queued" do |
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+ expect(AgentPropagateJob.can_enqueue?).to be_truthy |
|
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+ end |
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+ |
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+ it "is falsy when a progation job is queued" do |
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+ Delayed::Job.create!(queue: 'propagation') |
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+ expect(AgentPropagateJob.can_enqueue?).to be_falsy |
|
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+ end |
|
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+ |
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+ it "is truthy when a enqueued progation job failed" do |
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+ Delayed::Job.create!(queue: 'propagation', failed_at: Time.now - 1.minute) |
|
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+ expect(AgentPropagateJob.can_enqueue?).to be_truthy |
|
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+ end |
|
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+ end |
|
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+end |