74 lines
3.5 KiB
Plaintext
74 lines
3.5 KiB
Plaintext
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/**@page api_incompat3to4 API incompatibilities between Nagios 3 and 4
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A list of API incompatibilities between Nagios 3 and 4.
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[TOC]
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@section globalvars Global Variables
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@li event_list_{high,low} and event_list_{high,low}_tail are no more.
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Instead there is "squeue_t *nagios_squeue", which is a single queue
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to handle all timed events.
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@li last_command_check, command_check_interval, external_command_buffer
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and external_command_buffer_slots are no more.
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@li check_result_list is no more
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@li passive_check_result_list and passive_check_result_list_tail are no
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more.
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@section datastructures Data Structures
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@li All primary objects have been given an 'id' field, which can be
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used to store additional data about each object, or mark them in
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bitmaps, or...
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@li Container-ish pointers have been removed pretty much everywhere in
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favour of testable libraries with specific lookup properties and
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containers. This means 'next_hash' etc no longer exist in any object.
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The 'next' pointers in primary objects still remain, but you should
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avoid using them in favour of iterating over objects using the object
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arrays.
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@li next and prev have been removed from timed_event. It's no longer
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possible to sanely loop over all queued elements, since the squeue
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library keeps its types opaque. Adding an "squeue_foreach()" thing
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would be as simple as running a breadth-first search in the pqueue
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library that drives the squeue implementation.
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@li The scheduled_downtime data type now has start_event and
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stop_event.
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@li nebstruct_program_status_data no longer has a last_command_check
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var.
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@li The passive_service_check data type is no more.
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@li The data type circular_buffer has been removed.
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@li The host object's notify_on_down, notify_on_up, notify_on_blablah
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variables have been replaced with a single "notification_options" field
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instead, which is a small hand-managed bitmask of the states we should
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notify on, based on 1 << current_state.
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@li As per above, with flap_detection_options
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@li As per above, with stalking_options
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@li As per the three above, with services
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@li As per above, with dependencies which now have a "failure_options"
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field instead of multiple "fail_on_foo" fields.
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@li As per above with escalations, which now have an
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"escalation_options" field instead of multiple "escalate on foo" fields.
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@section functions Functions
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@li Event queue management functions have been significantly altered
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to match the new scheduling queue implementation. add_event(),
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remove_event(), reschedule_event() and schedule_new_event() are the
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primary ones.
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@li submit_external_command() and submit_raw_external_command() have
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been removed, as has check_for_external_commands().
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@li All functions handling adding and removing objects to circular
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buffers or other types of linked lists used for searching have been
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removed.
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@li The *host*_3x() functions are gone. They have been replaced with
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versions without the _3x suffix.
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@li run_sync_host_check_3x() is gone. perform_on_demand_host_check(),
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which previously only called run_sync_host_check_3x(), now does
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something sensible instead of calling out to a single helper.
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@li Using the 'struct host_struct *foo' form of type-naming has been
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obsoleted and will no longer work. Use 'struct host' instead.
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@li Use of typedef'ed typenames for non-opaque structures is now
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deprecated. The typedef's will be removed in Nagios 5, and modules
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that wish to continue using them after that will have to add them
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themselves. The new preferred form is 'struct host *foo', which
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clearly shows that we're dealing with a non-opaque type.
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*/
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