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<!DOCTYPE erlref SYSTEM "erlref.dtd">
<erlref>
<header>
<copyright>
<year>2010</year><year>2016</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
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<title>ct_slave</title>
<prepared></prepared>
<responsible></responsible>
<docno></docno>
<approved></approved>
<checked></checked>
<date></date>
<rev>A</rev>
<file>ct_slave.xml</file>
</header>
<module since="OTP R14B">ct_slave</module>
<modulesummary>Common Test framework functions for starting and stopping
nodes for Large-Scale Testing.</modulesummary>
<description>
<p><c>Common Test</c> framework functions for starting and stopping nodes
for Large-Scale Testing.</p>
<p>This module exports functions used by the <c>Common Test</c>
Master to start and stop "slave" nodes. It is the default callback
module for the <c>{init, node_start}</c> term in the Test
Specification.</p>
</description>
<funcs>
<func>
<name since="OTP R14B">start(Node) -> Result</name>
<fsummary>Starts an Erlang node with name Node on the local
host.</fsummary>
<type>
<v>Node = atom()</v>
<v>Result = {ok, NodeName} | {error, Reason, NodeName}</v>
<v>Reason = already_started | started_not_connected | boot_timeout | init_timeout | startup_timeout | not_alive</v>
<v>NodeName = atom()</v>
</type>
<desc><marker id="start-1"/>
<p>Starts an Erlang node with name <c>Node</c> on the local host.</p>
<p>See also
<seealso marker="#start-3"><c>ct_slave:start/3</c></seealso>.</p>
</desc>
</func>
<func>
<name since="OTP R14B">start(HostOrNode, NodeOrOpts) -> Result</name>
<fsummary>Starts an Erlang node with default options on a specified
host, or on the local host with specified options.</fsummary>
<type>
<v>HostOrNode = atom()</v>
<v>NodeOrOpts = atom() | list()</v>
<v>Result = {ok, NodeName} | {error, Reason, NodeName}</v>
<v>Reason = already_started | started_not_connected | boot_timeout | init_timeout | startup_timeout | not_alive</v>
<v>NodeName = atom()</v>
</type>
<desc><marker id="start-2"/>
<p>Starts an Erlang node with default options on a specified host, or
on the local host with specified options. That is, the call is
interpreted as <c>start(Host, Node)</c> when the second argument is
atom-valued and <c>start(Node, Opts)</c> when it is list-valued.</p>
<p>See also
<seealso marker="#start-3"><c>ct_slave:start/3</c></seealso>.</p>
</desc>
</func>
<func>
<name since="OTP R14B">start(Host, Node, Opts) -> Result</name>
<fsummary>Starts an Erlang node with name Node on host Host as
specified by the combination of options in Opts.</fsummary>
<type>
<v>Node = atom()</v>
<v>Host = atom()</v>
<v>Opts = [OptTuples]</v>
<v>OptTuples = {username, Username} | {password, Password} | {boot_timeout, BootTimeout} | {init_timeout, InitTimeout} | {startup_timeout, StartupTimeout} | {startup_functions, StartupFunctions} | {monitor_master, Monitor} | {kill_if_fail, KillIfFail} | {erl_flags, ErlangFlags} | {env, [{EnvVar, Value}]}</v>
<v>Username = string()</v>
<v>Password = string()</v>
<v>BootTimeout = integer()</v>
<v>InitTimeout = integer()</v>
<v>StartupTimeout = integer()</v>
<v>StartupFunctions = [StartupFunctionSpec]</v>
<v>StartupFunctionSpec = {Module, Function, Arguments}</v>
<v>Module = atom()</v>
<v>Function = atom()</v>
<v>Arguments = [term]</v>
<v>Monitor = bool()</v>
<v>KillIfFail = bool()</v>
<v>ErlangFlags = string()</v>
<v>EnvVar = string()</v>
<v>Value = string()</v>
<v>Result = {ok, NodeName} | {error, Reason, NodeName}</v>
<v>Reason = already_started | started_not_connected | boot_timeout | init_timeout | startup_timeout | not_alive</v>
<v>NodeName = atom()</v>
</type>
<desc><marker id="start-3"/>
<p>Starts an Erlang node with name <c>Node</c> on host <c>Host</c> as
specified by the combination of options in <c>Opts</c>.</p>
<p>Options <c>Username</c> and <c>Password</c> are used to log on to the
remote host <c>Host</c>. <c>Username</c>, if omitted, defaults to
the current username. <c>Password</c> is empty by default.</p>
<p>A list of functions specified in option <c>Startup</c> are
executed after startup of the node. Notice that all used modules
are to be present in the code path on <c>Host</c>.</p>
<p>The time-outs are applied as follows:</p>
<taglist>
<tag><c>BootTimeout</c></tag>
<item><p>The time to start the Erlang node, in seconds. Defaults to
3 seconds. If the node is not pingable within this time, the result
<c>{error, boot_timeout, NodeName}</c> is returned.</p></item>
<tag><c>InitTimeout</c></tag>
<item><p>The time to wait for the node until it calls the internal
callback function informing master about a successful startup.
Defaults to 1 second. In case of a timed out message, the result
<c>{error, init_timeout, NodeName}</c> is returned.</p></item>
<tag><c>StartupTimeout</c></tag>
<item><p>The time to wait until the node stops to run
<c>StartupFunctions</c>. Defaults to 1 second. If this time-out
occurs, the result <c>{error, startup_timeout, NodeName}</c> is
returned.</p></item>
</taglist>
<p><em>Options:</em></p>
<taglist>
<tag><c>monitor_master</c></tag>
<item><p>Specifies if the slave node is to be stopped if the
master node stops. Defaults to <c>false</c>.</p></item>
<tag><c>kill_if_fail</c></tag>
<item><p>Specifies if the slave node is to be killed if a time-out
occurs during initialization or startup. Defaults to <c>true</c>.
Notice that the node can also be still alive it the boot time-out
occurred, but it is not killed in this case.</p></item>
<tag><c>erlang_flags</c></tag>
<item><p>Specifies which flags are added to the parameters of the
executable <c>erl</c>.</p></item>
<tag><c>env</c></tag>
<item><p>Specifies a list of environment variables that will extend
the environment.</p></item>
</taglist>
<p><em>Special return values:</em></p>
<list type="bulleted">
<item><p><c>{error, already_started, NodeName}</c> if the node
with the specified name is already started on a specified
host.</p></item>
<item><p><c>{error, started_not_connected, NodeName}</c> if the
node is started, but not connected to the master node.</p></item>
<item><p><c>{error, not_alive, NodeName}</c> if the node on which
<seealso marker="#start-3"><c>ct_slave:start/3</c></seealso> is
called, is not alive. Notice that <c>NodeName</c> is the name of
the current node in this case.</p></item>
</list>
</desc>
</func>
<func>
<name since="OTP R14B">stop(Node) -> Result</name>
<fsummary>Stops the running Erlang node with name Node on the local
host.</fsummary>
<type>
<v>Node = atom()</v>
<v>Result = {ok, NodeName} | {error, Reason, NodeName}</v>
<v>Reason = not_started | not_connected | stop_timeout</v>
</type>
<desc><marker id="stop-1"/>
<p>Stops the running Erlang node with name <c>Node</c> on the local
host.</p>
</desc>
</func>
<func>
<name since="OTP R14B">stop(Host, Node) -> Result</name>
<fsummary>Stops the running Erlang node with name Node on host
Host.</fsummary>
<type>
<v>Host = atom()</v>
<v>Node = atom()</v>
<v>Result = {ok, NodeName} | {error, Reason, NodeName}</v>
<v>Reason = not_started | not_connected | stop_timeout</v>
<v>NodeName = atom()</v>
</type>
<desc><marker id="stop-2"/>
<p>Stops the running Erlang node with name <c>Node</c> on host
<c>Host</c>.</p>
</desc>
</func>
</funcs>
</erlref>
