* Open: the testbed is running and can be communicated with (and, if
applicable, is not being used by any other concurrent test run)
-(Note that these are the states of the server, in the tester core to server
-protocol. The actual testbed will probably have more states, including for
-example Closed, Open (and therefore busy), Modified, Broken, etc. Ideally the
-virtualisation regime will prevent multiple concurrent uses of the same
-testbed; the tester core is allowed to assume that either its caller or the
-virtualisation regime will ensure that it has exclusive use of the testbed.)
+Note that these are the states of the server, in the tester core to
+server protocol. The actual testbed will probably have more states,
+including for example Closed, Open (and therefore busy), Modified,
+Broken, etc. Ideally the virtualisation regime will prevent multiple
+concurrent uses of the same testbed; the tester core is allowed to
+assume that either its caller or the virtualisation regime will ensure
+that it has exclusive use of the testbed.
-The server program is invoked with the argument --debian-package-testing and
-then proceeds to speak a protocol on its stdin/stdout. The protocol is
-line-based. In the future other ways of invoking the server may be defined; the
-current server should of course reject such invocations.
+The server program is invoked with the argument
+--debian-package-testing and then proceeds to speak a protocol on its
+stdin/stdout. The protocol is line-based. In the future other ways
+of invoking the server may be defined; the current server should of
+course reject such invocations.
- * Initial response from regime server: ok
- * Command capabilities; response eg ok efficient-diff revert ... where the
- words after ok are features that not all regimes support. Valid in all
- states. Currently defined features:
+Protocol
+--------
- + revert: the testbed will actually revert when it is closed. If this
- feature is not mentioned then changes to the testbed are persistent (so
- destructive tests should not be performed).
+* Initial response from regime server:
+ ok
+ This response is also the response from any of the commands listed
+ below, unless otherwise specified.
- + changed-files: the regime will provide a changed-files file (see
- below).
- * Command open; response ok testbed-scratchspace. Checks that the testbed is
- present and reserves it (waiting for other uses of the testbed to finish
- first, if necessary). State: Closed to Open. testbed-scratchspace is a
- pathname on the testbed which can be used freely by the test scripts.
+* Command
+ capabilities
+ response, for example
+ ok efficient-diff revert ...
+ where the words after ok are features that not all regimes
+ support. Valid in all states.
- * Command stop local-pathname; response ok. Indicates that the testbed should
- be stopped; replaces local-pathname (on the host) with a directory
- containing a representation of the changes to the testbed's filesystem.
- Then reverts the testbed. State: Open to Closed.
+ Currently defined features:
- * Command close; response ok. Stops and undoes filesystem changes. State:
- Open to Closed.
+ + revert: the testbed will actually revert when it is closed.
+ If this feature is not mentioned then changes to the testbed
+ are persistent (so destructive tests should not be performed).
- * Command execute program,arg,arg... stdin stdout stderr cwd; response
- ok exitstatus. Executes the command (args separated by commas, everything
- url-encoded). stdin, stdout, stderr are files on the testbed (must be
- files, not pipes).
+ + changed-files: the regime will provide a changed-files file
+ (see below).
- * Command copydown host-tree testbed-path or copyup testbed-tree host-path.
- Response ok. Like cp -dR --preserve=mode,timestamps only across the testbed
- boundary.
- * Command quit; response ok and regime server exits with status 0, after
- closing the testbed if applicable.
+* Command
+ open
+ response
+ ok <testbed-scratchspace>
-On any error including signals to the regime server or EOF on stdin the testbed
-is unreserved and restored to its original state (ie, closed), and the regime
-server will print a message to stderr (unless it is dying with a signal).
+ Checks that the testbed is present and reserves it (waiting for
+ other uses of the testbed to finish first, if necessary). State:
+ Closed to Open. <testbed-scratchspace> is a pathname on the
+ testbed which can be used freely by the test scripts.
-The representation of changes to the local filesystem is a directory containing
-zero or more of:
- * changed-files: list of filenames, each one nul-terminated
+* Command
+ stop <local-pathname>
- * other formats with other data or combinations of data (for future use)
+ Stops the testbed. Replaces local-pathname (on the host) with a
+ directory containing a representation of the changes to the
+ testbed's filesystem; these changes are undone (if `revert' was
+ advertised). Then reverts the testbed. State: Open to Closed.
+
+
+* Command
+ close
+
+ Stops the testbed and undoes filesystem changes (if `revert' is
+ advertised). State: Open to Closed.
+
+
+* Command
+ execute <program>,<arg>,<arg>... <stdin> <stdout> <stderr> <cwd>
+ response
+ ok <exit-status>
+
+ Executes the command (args separated by commas, everything
+ url-encoded). stdin, stdout, stderr are files on the testbed
+ (must be files, not pipes).
+
+
+* Commands
+ copydown <host-tree> <testbed-path>
+ copyup <testbed-tree> <host-path>
+
+ Like cp -dR --preserve=mode,timestamps exce[t across the testbed
+ boundary.
+
+
+* Command
+ quit
+ response
+ ok
+ and then the regime server exits with status 0, after
+ closing the testbed if applicable.
+
+
+
+
+On any error including signals to the regime server or EOF on stdin
+the testbed is unreserved and restored to its original state (ie,
+closed), and the regime server will print a message to stderr (unless
+it is dying with a signal).
+
+The representation of changes to the local filesystem is a directory
+containing zero or more of:
+ + changed-files: list of filenames, each one nul-terminated
+ + other formats with other data or combinations of data
+ (for future use)
~ianmdlvl / autopkgtest.git / commitdiff