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To support OTP release upgrades I have added support for building upgrade packages. Support for this is included in the rebar_upgrade module, specifically generate_upgrade/2. It requires one variable to be set on the command line 'previous_release' which is the absolute path or relative path from 'rel/' to the previous release one is upgrading from. Running an upgrade will create the needed files, including a relup and result in a tarball containing the upgrade being written to 'rel/'. When done it cleans up the temporary files systools created. Usage: $ rebar generate-upgrade previous_release=/path/to/old/version This also includes a dummy application that can be used to test upgrades as well as an example. Special thanks to Daniel Reverri, Jesper Louis Andersen and Richard Jones for comments and patches.
25 lines
711 B
Text
25 lines
711 B
Text
{sys, [
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{lib_dirs, ["../apps"]},
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{rel, "dummy", "0.1", [
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kernel,
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stdlib,
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sasl,
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dummy
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]},
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{rel, "start_clean", "", [kernel, stdlib]},
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{boot_rel, "dummy"},
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{profile, embedded},
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{excl_sys_filters, ["^bin/.*", "^erts.*/bin/(dialyzer|typer)"]},
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{excl_archive_filters, [".*"]},
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{app, dummy, [{incl_cond, include}]}
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]}.
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{overlay, [
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{mkdir, "log/sasl"},
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{copy, "files/erl", "{{erts_vsn}}/bin/erl"},
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{copy, "files/nodetool", "{{erts_vsn}}/bin/nodetool"},
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{copy, "files/dummy", "bin/dummy"},
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{copy, "files/app.config", "etc/app.config"},
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{copy, "files/vm.args", "etc/vm.args"}
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]}.
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