[tahoe-lafs-trac-stream] [tahoe-lafs] #1836: use leasedb (not crawler) to figure out how many shares you have and how many bytes

[tahoe-lafs]

#1836: use leasedb (not crawler) to figure out how many shares you have and how
many bytes
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     Reporter:  zooko    |      Owner:  davidsarah
         Type:  defect   |     Status:  assigned
     Priority:  normal   |  Milestone:  undecided
    Component:  code-    |    Version:  1.9.2
  storage                |   Keywords:  leases garbage-collection
   Resolution:           |  accounting
Launchpad Bug:           |
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Old description:

> In current trunk, there is a "!BucketCountingCrawler" whose job it is to
> count up how many shares are stored.
>
> I propose that this be replaced by using the leasedb to count files (a
> simple SQL COUNT query!), and at the same time to extend the storage
> server's abilities by letting it be able to add up the aggregate sizes of
> things as well as their number.
>
> This is part of an "overarching ticket" to eliminate most uses of crawler
> — ticket #1834.

New description:

 In current trunk, there is a "!BucketCountingCrawler" whose job it is to
 count up how many shares are stored.

 I propose that this be replaced by using the leasedb to count files (a
 simple SQL COUNT query!), and at the same time to extend the storage
 server's abilities by letting it be able to add up the aggregate sizes of
 things as well as their number.

 This is part of an "overarching ticket" to eliminate most uses of crawler
 — ticket #1834.

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Comment (by zooko):

 After talking with markberger today, I realized that #1818 is the ticket
 to merge leasedb into trunk, and #1819 is the superceding ticket to merge
 leasedb+cloud-backend into trunk.

-- 
Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/1836#comment:10>
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