libosmocore.git branch jerlbeck/wip/stats updated. 0.8.0-79-g06a64d7

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http://cgit.osmocom.org/libosmocore/commit/?id=06a64d7db2f93a996a074cfb9e1a8eacd3303eee

commit 06a64d7db2f93a996a074cfb9e1a8eacd3303eee
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date:   Thu Oct 29 00:55:58 2015 +0100

    stats: Add osmo_ name prefix to identifiers
    
    Since the the stat_item and stats functions and data types are meant
    to be exported, they get an osmo_ prefix.
    
    Sponsored-by: On-Waves ehf

http://cgit.osmocom.org/libosmocore/commit/?id=bc4f7ae512b32fa4b569dfc5242d0b7a5da3f81b

commit bc4f7ae512b32fa4b569dfc5242d0b7a5da3f81b
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date:   Wed Oct 28 21:47:45 2015 +0100

    stats: Add log reporter
    
    This reporter passes the measurement values to the logging subsystem
    as DSTATS (which is currently DLGLOBAL) level INFO messages.
    
    Sponsored-by: On-Waves ehf

http://cgit.osmocom.org/libosmocore/commit/?id=490b38f57a24726f3e3493fc3500cda526c5d0aa

commit 490b38f57a24726f3e3493fc3500cda526c5d0aa
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date:   Tue Oct 27 15:10:28 2015 +0100

    stats: Use function pointers in reporter objects
    
    Currently case statements are used to select the right reporter
    functions. This makes it difficult to add new reporter types,
    especially if they are not going to reside in the same file.
    
    This commit introduces per reporter function pointer for
    open, close, send_count, and send_item. They are checked for
    non-NULL before being called or skipped.
    
    Sponsored-by: On-Waves ehf

http://cgit.osmocom.org/libosmocore/commit/?id=ed197fd4f923512fca5b93b90c2132845896fa59

commit ed197fd4f923512fca5b93b90c2132845896fa59
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date:   Tue Oct 27 14:43:24 2015 +0100

    stats: Make net config optional
    
    To support reporters without network configuration, this commit
    introduces the have_net_config flag to provide corresponding error
    messages.
    
    Sponsored-by: On-Waves ehf

http://cgit.osmocom.org/libosmocore/commit/?id=4aa11770622ae9009074d68cc8c340821b19adf3

commit 4aa11770622ae9009074d68cc8c340821b19adf3
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date:   Tue Oct 27 11:55:20 2015 +0100

    stats: Add missing mtu command to 'write' output
    
    Currently the config_write_stats_reporter function does not output
    the mtu value, which is fixed by this commit.
    
    Sponsored-by: On-Waves ehf

http://cgit.osmocom.org/libosmocore/commit/?id=d01acfcc75a6c5798a95a8ccca9be18eba65a0bf

commit d01acfcc75a6c5798a95a8ccca9be18eba65a0bf
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date:   Mon Oct 26 16:22:45 2015 +0100

    stats: Support statsd Multi-Metric Packets
    
    If the MTU is given, combine several messages into a single UDP
    packet until the limit is reached. Flush all reporters after the
    values have been scanned.
    
    New vty commands (node config-stats):
      mtu <100-65535>     Enable multi-metric packets and set the maximum
                          packet size (in byte)
      no mtu              Disable multi-metric packets
    
    Note that single messages that are longer than the given MTU (minus
    28 octets protocol overhead) will be dropped.
    
    Sponsored-by: On-Waves ehf

http://cgit.osmocom.org/libosmocore/commit/?id=c8f47b600f8e2ad21266d4c27e960e477e5fe35c

commit c8f47b600f8e2ad21266d4c27e960e477e5fe35c
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date:   Mon Oct 26 14:42:05 2015 +0100

    stats: Add support for osmo_counters
    
    This commit changes the reporting code to also show all modified
    osmo_counter values. Since there is no grouping of these values, the
    name string just consists of the optional prefix and the counter
    name.
    
    Sponsored-by: On-Waves ehf

http://cgit.osmocom.org/libosmocore/commit/?id=80db4ec3875b0de7f06de769881d6c5d4b713f2d

commit 80db4ec3875b0de7f06de769881d6c5d4b713f2d
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date:   Mon Oct 26 14:39:08 2015 +0100

    core: Add difference function to osmo_counter
    
    The osmo_counter_difference returns the counter value difference
    since the last call of this function with the given counter object.
    
    Sponsored-by: On-Waves ehf

http://cgit.osmocom.org/libosmocore/commit/?id=c27671c10935ee384d03a87170c3f31ab435da07

commit c27671c10935ee384d03a87170c3f31ab435da07
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date:   Mon Oct 26 12:32:07 2015 +0100

    stats: Report stat item values
    
    Currently only rate counter are being supported.
    
    This commit adds support for stat items. All groups are polled for
    changed values.
    
    Sponsored-by: On-Waves ehf

http://cgit.osmocom.org/libosmocore/commit/?id=b1dbfb4c4179a62cd4b761ebdc7a3c2de5bdc0d9

commit b1dbfb4c4179a62cd4b761ebdc7a3c2de5bdc0d9
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date:   Mon Oct 26 11:58:38 2015 +0100

    stats: Implement timer based reporting
    
    This calls stats_flush in regular intervals which polls the
    statistical values and calls the active reporters when values have
    changed.
    
    Sponsored-by: On-Waves ehf

http://cgit.osmocom.org/libosmocore/commit/?id=adc900e0e38373193c8451c0310fe742d62c2c8e

commit adc900e0e38373193c8451c0310fe742d62c2c8e
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date:   Tue Oct 20 19:05:52 2015 +0200

    stats/vty: Add stats configuration
    
    This commit provides stats configuration similar to the log
    configuration.
    
    The following vty commands are added to the config node:
      stats reporter statsd          Create/Modify a statsd reporter
      no stats reporter statsd       Remove a statsd reporter
    
    To actually configure a reporter, the config-stats node is entered
    when the "stats reporter" command has succeeded. The following new
    vty commands are available there:
      local-ip ADDR          Set the IP address to which we bind locally
      no local-ip            Do not bind to a certain IP address
      remote-ip ADDR         Set the remote IP address to which we connect
      remote-port <1-65535>  Set the remote port to which we connect
      prefix PREFIX          Set the item/counter name prefix
      no prefix              Do not use a prefix
      enable                 Enable the reporter
      disable                Disable the reporter
    
    Sponsored-by: On-Waves ehf

http://cgit.osmocom.org/libosmocore/commit/?id=95bf828003b065f00a78144296072a9730cbf7bc

commit 95bf828003b065f00a78144296072a9730cbf7bc
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date:   Tue Oct 20 19:05:52 2015 +0200

    stats: Add the reporting framework
    
    This commit provides the stats reporting framework that can manage
    several types of measurement reporters. Initially support for
    rate_ctr and the statsd protocol is included.
    
    Sponsored-by: On-Waves ehf

http://cgit.osmocom.org/libosmocore/commit/?id=45513e6040195f5494d40a2750de4dac7037593f

commit 45513e6040195f5494d40a2750de4dac7037593f
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date:   Mon Oct 19 15:14:13 2015 +0200

    stats/vty: Add stats_vty.c
    
    This file will contain the VTY code related to statistics.
    
    This commit adds a minimal file with just as single VTY command:
    
    - show stats    This command shows all statistical values
    
    To enable this and future commands, the main program needs to call
    stats_vty_add_cmds().
    
    Sponsored-by: On-Waves ehf

http://cgit.osmocom.org/libosmocore/commit/?id=7211fe157e1107d4a9c04a0ecf494a7b9633c400

commit 7211fe157e1107d4a9c04a0ecf494a7b9633c400
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date:   Mon Oct 19 15:11:50 2015 +0200

    stat/vty: Add vty_out_statistics_full to show all statistics
    
    This functions shows the state of all osmo_counters, stat_item
    groups, and counter groups.
    
    Sponsored-by: On-Waves ehf

http://cgit.osmocom.org/libosmocore/commit/?id=aec583f68786f91c3f0d76a8f8706c85aaca07a8

commit aec583f68786f91c3f0d76a8f8706c85aaca07a8
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date:   Mon Oct 19 15:06:01 2015 +0200

    stat/vty: Use the iterator algorithms to show ctrg and statg
    
    Currently the groups for stat_items and counter are iterated
    manually.
    
    This commit makes use of the new iterator functions to access the
    single elements via handlers.
    
    Sponsored-by: On-Waves ehf

http://cgit.osmocom.org/libosmocore/commit/?id=e5b0fe2e3c84dd0de7021d65d416356612db4260

commit e5b0fe2e3c84dd0de7021d65d416356612db4260
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date:   Mon Oct 19 15:00:59 2015 +0200

    core: Update osmo_counters_for_each doc
    
    Fix type and add a note about the semantics of the handler's return
    code.
    
    Sponsored-by: On-Waves ehf

http://cgit.osmocom.org/libosmocore/commit/?id=c6a7108828bf98ebcaf31d24bd8d789afdd4da94

commit c6a7108828bf98ebcaf31d24bd8d789afdd4da94
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date:   Mon Oct 19 14:04:38 2015 +0200

    stats: Add stat_item_for_each functions
    
    This commit adds the following functions:
    
      stat_item_for_each_group     Call a handler for each group
      stat_item_for_each_item      Call a handler for each item of a
                                   group
    
    Sponsored-by: On-Waves ehf

http://cgit.osmocom.org/libosmocore/commit/?id=423c1e5a4fc7ad2cd5e95e852b778c7e2c892bc1

commit 423c1e5a4fc7ad2cd5e95e852b778c7e2c892bc1
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date:   Mon Oct 19 13:45:42 2015 +0200

    core: Extend rate_ctr by helper functions
    
    For global value reporting, some additional helper functions are
    needed. The statsd protocol expects differential counter values,
    which are currently not provided by rate_ctr (except for s/m/h/d
    intervals).
    
    This commit adds several helper functions to rate_ctr:
    
    - rate_ctr_difference  returns the counter delta since the last
                           call to this function for a given counter
    - rate_ctr_for_each_counter
                           iterates through each counter of a group
    - rate_ctr_for_each_group
                           iterates through all globally registered
                           counter groups
    
    Note that the rate_ctr_difference function can only be used by a
    single backend, since it modifies the 'previous' field in the
    rate_ctr obj.
    
    Sponsored-by: On-Waves ehf

http://cgit.osmocom.org/libosmocore/commit/?id=b27b352e937dd0760da1e7fb05f9207be05702b8

commit b27b352e937dd0760da1e7fb05f9207be05702b8
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date:   Mon Oct 12 18:47:09 2015 +0200

    stats: Use a global index for stat item values
    
    Currently each stat item has a separate index value which basically
    counts each single value added to the item and which can be used by
    a reporter to get all new values that have not been reported yet.
    The drawback is, that such an index must be stored for each stat
    item.
    
    This commit introduces a global index which is incremented for each
    new stat item value. This index is then stored together with the item
    value. So a single stored index per reporter is sufficient to make
    sure that only new values are reported.
    
    Sponsored-by: On-Waves ehf

http://cgit.osmocom.org/libosmocore/commit/?id=0a1400fc8311268d0a66bb20e0620e546e8d11c8

commit 0a1400fc8311268d0a66bb20e0620e546e8d11c8
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date:   Tue Oct 6 15:23:25 2015 +0200

    ns: Add statistics for some events
    
    The following counters are added to the ns.nsvc counter group:
      lost.alive             The number of missing ALIVE ACK messages
      lost.reset             The number of missing RESET ACK messages
    
    The following items are added to the ns.nsvc stat item group:
      alive.delay            The time in ms between sending ALIVE and
                             receiving the next ALIVE ACK
    
    Sponsored-by: On-Waves ehf

http://cgit.osmocom.org/libosmocore/commit/?id=738d9e22108a8e472458fad42509fd8d96994d6c

commit 738d9e22108a8e472458fad42509fd8d96994d6c
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date:   Tue Oct 6 15:21:56 2015 +0200

    stats: Add vty_out_stat_item_group
    
    This functions dumps a whole stat item group to the VTY.
    
    Sponsored-by: On-Waves ehf

http://cgit.osmocom.org/libosmocore/commit/?id=9732cb4a92a883c7e9f7dcd928b6e22976a797ca

commit 9732cb4a92a883c7e9f7dcd928b6e22976a797ca
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date:   Thu Oct 1 20:43:53 2015 +0200

    stats: Add stat_item for value monitoring
    
    This commit adds instrumentation function to gather measurement
    and statistical values similar to counter groups.
    
    Multiple values can be stored per item, which can be retrieved in
    FIFO order. Getting values from the item does not modify its state to
    allow for multiple independant backends (e.g. VTY and statd).
    
    When a new value is set, the oldest value gets silently overwritten.
    Lost values are skipped when getting values from the item.
    
    Sponsored-by: On-Waves ehf

-----------------------------------------------------------------------

Summary of changes:
 TODO-RELEASE                        |   1 +
 include/osmocom/core/bitXXgen.h.tpl |   4 +-
 include/osmocom/core/linuxlist.h    |   3 +-
 include/osmocom/core/stat_item.h    |  68 ++++----
 include/osmocom/core/stats.h        |  57 ++++---
 include/osmocom/gprs/gprs_ns.h      |   2 +-
 include/osmocom/vty/misc.h          |   2 +-
 include/osmocom/vty/stats.h         |   3 +-
 src/gb/gprs_ns.c                    |   8 +-
 src/stat_item.c                     |  62 +++----
 src/stats.c                         | 319 ++++++++++++++++++++++--------------
 src/vty/stats_vty.c                 | 140 +++++++++++-----
 src/vty/utils.c                     |  16 +-
 tests/stats/stats_test.c            | 110 ++++++-------
 14 files changed, 473 insertions(+), 322 deletions(-)


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