nats-io / nats-streaming-server / 1881

92%

main: 92%

Pull #820

travis-ci

[FIXED] Number of subscriptions in /serverz endpoint is incorrect

The number of subscriptions was incorrectly increasing when a durable
subscription was resumed.

The proper behavior is as follows:
- a durable is started for the first time, count increases
- this durable is closed (but not unsubscribed), count unchanged
- durable is unsubscribed, count decreases
- a durable queue group is created, count increases
- a member added, count increases
- a member leaves, count decreases
- the last member leaves (but group remains because durable), count
  is unchanged.
- group is unsubscribed, count decreases.

for non durable subscriptions (queue or not), when a subscription
is created, count increases, when closed or unsubscribed, count
decreases.

Resolves #819

Signed-off-by: Ivan Kozlovic <ivan@synadia.com>

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