[tahoe-lafs-trac-stream] [Tahoe-LAFS] #2325: maybe stop using tac files to indicate node type?

[Tahoe-LAFS]

#2325: maybe stop using tac files to indicate node type?
----------------------------+---------------------------
 Reporter:  daira           |          Owner:
     Type:  defect          |         Status:  new
 Priority:  normal          |      Milestone:  undecided
Component:  code-nodeadmin  |        Version:  1.10.0
 Keywords:  cli config      |  Launchpad Bug:
----------------------------+---------------------------
 In [ticket:1159#comment:50], warner wrote:
 > Note that this patch [...] stops using the *contents* of the .tac files,
 but still relies upon their presence, in particular their filename: if
 "client" is a substring of the filename of the first .tac file found in
 the node's basedir, then we instantiate a Client, if "introducer" is in
 the string, we instantiate an IntroducerNode, etc.
 >
 > We'll want another patch, after 1.11, to move this indicator into
 `tahoe.cfg` (and look for a `.tac` filename as a backwards-compatibility
 tool).

 I'm not sure that we do want this; a simpler approach would be to keep the
 `.tac` file marker, possibly just as a zero-length file. That would keep
 nodes created by future versions runnable by 1.11 (although not by earlier
 versions). Still, I've created this ticket to discuss it, and to allow us
 to close #1159.

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Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/2325>
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