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69 lines
2.9 KiB
ReStructuredText
69 lines
2.9 KiB
ReStructuredText
7 years ago
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Examples
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========
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Recursively Nested Bootstrap
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----------------------------
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This demonstrates the library's ability to use slave contexts to recursively
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proxy connections to additional slave contexts, with a uniform API to any
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slave, and all features (function calls, import forwarding, stdio forwarding,
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log forwarding) functioning transparently.
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This example uses a chain of local contexts for clarity, however SSH and sudo
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contexts work identically.
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nested.py:
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.. code-block:: python
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import os
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import econtext.utils
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@econtext.utils.run_with_router
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def main(router):
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econtext.utils.log_to_file()
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context = None
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for x in range(1, 11):
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print 'Connect local%d via %s' % (x, context)
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context = router.local(via=context, name='local%d' % x)
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context.call(os.system, 'pstree -s python -s econtext')
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Output:
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.. code-block:: shell
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$ python nested.py
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Connect local1 via None
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Connect local2 via Context(1, 'local1')
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Connect local3 via Context(2, 'local2')
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Connect local4 via Context(3, 'local3')
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Connect local5 via Context(4, 'local4')
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Connect local6 via Context(5, 'local5')
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Connect local7 via Context(6, 'local6')
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Connect local8 via Context(7, 'local7')
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Connect local9 via Context(8, 'local8')
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Connect local10 via Context(9, 'local9')
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18:14:07 I ctx.local10: stdout: -+= 00001 root /sbin/launchd
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18:14:07 I ctx.local10: stdout: \-+= 08126 dmw /Applications/iTerm.app/Contents/MacOS/iTerm2
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18:14:07 I ctx.local10: stdout: \-+= 10638 dmw /Applications/iTerm.app/Contents/MacOS/iTerm2 --server bash --login
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18:14:07 I ctx.local10: stdout: \-+= 10639 dmw bash --login
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18:14:07 I ctx.local10: stdout: \-+= 13632 dmw python nested.py
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18:14:07 I ctx.local10: stdout: \-+- 13633 dmw econtext:dmw@Eldil.local:13632
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18:14:07 I ctx.local10: stdout: \-+- 13635 dmw econtext:dmw@Eldil.local:13633
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18:14:07 I ctx.local10: stdout: \-+- 13637 dmw econtext:dmw@Eldil.local:13635
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18:14:07 I ctx.local10: stdout: \-+- 13639 dmw econtext:dmw@Eldil.local:13637
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18:14:07 I ctx.local10: stdout: \-+- 13641 dmw econtext:dmw@Eldil.local:13639
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18:14:07 I ctx.local10: stdout: \-+- 13643 dmw econtext:dmw@Eldil.local:13641
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18:14:07 I ctx.local10: stdout: \-+- 13645 dmw econtext:dmw@Eldil.local:13643
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18:14:07 I ctx.local10: stdout: \-+- 13647 dmw econtext:dmw@Eldil.local:13645
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18:14:07 I ctx.local10: stdout: \-+- 13649 dmw econtext:dmw@Eldil.local:13647
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18:14:07 I ctx.local10: stdout: \-+- 13651 dmw econtext:dmw@Eldil.local:13649
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18:14:07 I ctx.local10: stdout: \-+- 13653 dmw pstree -s python -s econtext
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18:14:07 I ctx.local10: stdout: \--- 13654 root ps -axwwo user,pid,ppid,pgid,command
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