55 lines
2.0 KiB
Go
55 lines
2.0 KiB
Go
/*
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Package suture provides Erlang-like supervisor trees.
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This implements Erlang-esque supervisor trees, as adapted for Go. This is
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intended to be an industrial-strength implementation, but it has not yet
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been deployed in a hostile environment. (It's headed there, though.)
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Supervisor Tree -> SuTree -> suture -> holds your code together when it's
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trying to fall apart.
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Why use Suture?
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* You want to write bullet-resistant services that will remain available
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despite unforeseen failure.
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* You need the code to be smart enough not to consume 100% of the CPU
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restarting things.
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* You want to easily compose multiple such services in one program.
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* You want the Erlang programmers to stop lording their supervision
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trees over you.
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Suture has 100% test coverage, and is golint clean. This doesn't prove it
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free of bugs, but it shows I care.
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A blog post describing the design decisions is available at
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http://www.jerf.org/iri/post/2930 .
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Using Suture
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To idiomatically use Suture, create a Supervisor which is your top level
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"application" supervisor. This will often occur in your program's "main"
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function.
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Create "Service"s, which implement the Service interface. .Add() them
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to your Supervisor. Supervisors are also services, so you can create a
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tree structure here, depending on the exact combination of restarts
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you want to create.
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As a special case, when adding Supervisors to Supervisors, the "sub"
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supervisor will have the "super" supervisor's Log function copied.
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This allows you to set one log function on the "top" supervisor, and
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have it propagate down to all the sub-supervisors. This also allows
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libraries or modules to provide Supervisors without having to commit
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their users to a particular logging method.
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Finally, as what is probably the last line of your main() function, call
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.Serve() on your top level supervisor. This will start all the services
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you've defined.
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See the Example for an example, using a simple service that serves out
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incrementing integers.
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*/
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package suture
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