mirror of
https://github.com/tstack/lnav
synced 2024-11-17 15:29:40 +00:00
421 lines
22 KiB
Plaintext
421 lines
22 KiB
Plaintext
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lnav v0.8.2:
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Features:
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* The timestamp format for JSON log files can be specified with the
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"timestamp-format" option in the "line-format" array.
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* Added "min-width", "max-width", "align", and "overflow" options to the
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"line-format" in format definitions for JSON log files. These options
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give you more control over how the displayed line looks.
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* Added a "hidden" option to log format values so that you can hide JSON
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log fields from being displayed if they are not in the line format.
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* Added a "rewriter" field to log format value definitions that is a
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command used to rewrite the field in the pretty-printed version of a
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log message. For example, the HTTP access log format will rewrite the
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status code field to include the textual version (e.g. 200 (OK)).
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* Log message fields can now be hidden using the :hide-fields" command or
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by setting the 'hidden' property in the log format. When hidden, the
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fields will be replaced with a yellow ellipsis when displayed. Hiding
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large fields that contain extra details can make the log easier to read.
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The 'x' hotkey can be used to quickly toggle whether these fields are
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displayed or not.
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* Added a ':mark' command to bookmark the top line in the current view.
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* Added an ':alt-msg' command that can be used to set the text to be
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displayed in the bottom right of the command line. This command is
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mostly intended for use by hotkey maps to set the help text.
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* In lnav scripts, the first row of a SQL query result will now be turned
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into local variables that can be referenced in other commands or
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queries. For example, the following script will print the number one:
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;SELECT 1 as foobar
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:eval :echo ${foobar}
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* Added an 'lnav_view_stack' SQL table that gives access to the view
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stack.
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* Added a 'top_time' column to the lnav_views table so that you can get
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the timestamp for the top line in views that are time-based as well as
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allowing you to move the view to a given time with an UPDATE statement.
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* Added a 'search' column to the lnav_views table so that you can perform
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a text search programmatically.
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* Added a 'regexp_capture(<string>, <pattern>)' table-valued function for
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getting detailed results from matching a regular expression against a
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string.
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* Added a 'timediff(<time1>, <time2>)' SQL function for computing the
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difference between two relative or absolute timestamps.
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* Log formats can now define a default set of highlights with the
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"highlights" property.
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* Added a '|search-for <pattern>' built-in script that can be used to
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start a search from the command-line.
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* Log format definitions can now specify the expected log level for a
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sample line. This check should make it easier to validate the
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definition.
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Interface Changes:
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* Command and SQL documentation is now displayed in a section at the
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bottom of the screen when a command or query is being entered. Some
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commands will also display a preview of the command results. For
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example, the ':open' command will display the first ten lines of the
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file to be opened and the ':filter-out' command will highlight text
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that matches in the current view. The preview pane can be shown/hidden
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by pressing CTRL-P.
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* The color used for text colored via ":highlight" is now based on the
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the regex instead of randomly picked so that colors are consistent
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across invocations.
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* The "graph" view has been removed since it's functionality has been
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obsoleted by other features, like ":create-search-table".
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* When doing a search, if a hit is found within a second after hitting
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<ENTER>, the view will move to the matched line. The previous behavior
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was to stay on the current line, which tended to be a surprise to new
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users.
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* Pressing 'n'/'N' to move through the next/previous search hit will now
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skip adjacent lines, up to the vertical size of the view. This should
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make scanning through clusters of hits much faster. Repeatedly
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pressing these keys within a short time will also accelerate scanning
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by moving the view at least a full page at a time.
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Breaking Changes:
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* The captured timestamp text in log files must fully match a known format
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or an error will be reported. The previous behavior was to ignore any
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text at the end of the line.
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Fixes:
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* You can now execute commands from the standard input by using a dash (-)
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with the '-f' command-line argument. Reading commands from a file
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descriptor should also work, for example, with the following bash
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syntax:
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$ lnav -f <(echo :open the-file-to-open)
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* Programming language syntax highlighting should now only be applied to
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source code files instead of everywhere.
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lnav v0.8.1:
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Features:
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* Added a spectrogram command and view that displays the values of a
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numeric field over time. The view works for log message fields or
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for database result columns.
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* Log formats can now create SQL views and execute other statements
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by adding '.sql' files to their format directories. The SQL scripts
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will be executed on startup.
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* Added 'json_group_object' and 'json_group_array' aggregate SQL
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functions that collects values from a GROUP BY query into a JSON
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object or array, respectively.
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* The SQL view will now graph values found in JSON objects/arrays in
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addition to the regular columns in the result.
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* Added an 'regexp_match(<re>, <str>)' SQL function that can be used to
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extract values from a string using a regular expression.
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* Added an 'extract(<str>)' SQL function that extracts values using the
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same data discover/extraction parser used in the 'logline' table.
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* Added a "summary" overlay line to the bottom of the log view that
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displays how long ago the last message was received, along with the
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total number of files and the error rate over the past five minutes.
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* Pressing 'V' in the DB view will now check for a column with a
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timestamp and move to the corresponding time in the log view.
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* Added 'a/A' hotkeys to restore a view previously popped with 'q/Q'.
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* Added ":hide-lines-before", ":hide-lines-after", and
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":show-lines-before-and-after" commands so that you can filter out
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log lines based on time.
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* Scripts containing lnav commands/queries can now be executed using
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the pipe ('|') hotkey. See the documentation for more information.
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* Added an ":eval" command that can be used to execute a command or
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query after performing environment variable substitution.
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* Added an ":echo" command that can be useful for scripts to message
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the user.
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* The "log_part" column can now be set with an SQL UPDATE statement.
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* Added a "log_body" hidden column that returns the body of the log
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message.
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* Added ":config", ":reset-config", and ":save-config" commands to change
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configuration options, reset to default, and save them for future
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executions.
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* Added a "/ui/clock-format" configuration option that controls the time
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format in the top-left corner.
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* Added a "/ui/dim-text" configuration option that controls the brightness
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of text in the UI.
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* Added support for TAI64 timestamps (http://cr.yp.to/libtai/tai64.html).
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* Added a safe execution mode. If the 'LNAVSECURE' environment variable is
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set before executing lnav, the following commands are disabled:
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- open
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- pipe-to
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- pipe-line-to
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- write-*-to
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This makes it easier to run lnav with escalated privileges in restricted
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environments, without the risk of users being able to use the above
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mentioned commands to gain privileged access.
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Interface Changes:
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* The 'o/O' hotkeys have been reassigned to navigate through log
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messages that have a matching "opid" field. The old action of
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moving forward and backward by 60 minutes can be simulated by
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using the ':goto' command with a relative time and the 'r/R'
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hotkeys.
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* Log messages with timestamps that pre-date previous log messages will
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have the timestamp highlighted in yellow and underlined. These out-
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of-time-order messages will be assigned the time of the previous
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message for sorting purposes. You can press the 'p' hotkey to examine
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the 'Received Time' of the message as well as the time parsed from the
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original message. A "log_actual_time" hidden field has also been
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added to the SQLite virtual table so you can operate on the original
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message time from the file.
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* The 'A/B' hotkeys for moving forward/backward by 10% line increments
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have been reassigned to '[' and ']'. The 'a' and 'A' hotkeys are now
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used to return to the previously popped view while trying to preserve
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the time range. For example, after leaving the spectrogram view with
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'q', you can press 'A' return to the view with the top time in the
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spectrogram matching the top time in the log view.
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* The 'Q' hotkey now pops the current view off of the stack while
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maintaining the top time between views.
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Fixes:
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* Issues with tailing JSON logs have been fixed.
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* The jget() SQL function should now work for objects nested in arrays.
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lnav v0.8.0:
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Features:
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* Integration with "papertrailapp.com" for querying and tailing
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server log and syslog messages. See the Papertrail section in
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the online help for more details.
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* Remote files can be opened when lnav is built with libcurl v7.23.0+
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* SQL queries can now be done on lines that match a regular expression
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using the "log_search" table or by creating custom tables with the
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":create-search-table" command.
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* Log formats that are "containers" for other log formats, like
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syslog, are now supported. See the online help for more
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information.
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* Formats can be installed from git repositories using the '-i' option.
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A standard set of extra formats can be installed by doing
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'lnav -i extra'. (You must have git installed for this to work.)
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* Added support for 'VMware vSphere Auto Deploy' log format.
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* Added a 'sudo' log format.
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* Added hotkeys to move left/right by a smaller increment (H/L or
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Shift+Left/Shift+Right).
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* A color-coded bar has been added to the left side to show where
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messages from one file stop and messages from another file start.
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* The '-C' option will now try to check any specified log files to
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make sure the format(s) match all of the lines.
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* Added an "all_logs" SQLite table that contains the message format
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extracted from each log line. Also added a ';.msgformat' SQL command
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that executes a query that returns the counts for each format and the
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first line where the format was seen.
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* Added an "lnav_views" SQLite table that can be used to query and
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change the lnav view state.
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* When typing in a command, the status bar will display a short
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summary of the currently entered command.
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* Added a "delete-filter" command.
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* Added a "log_msg_instance" column to the logline and log_search
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tables to make it easier to join tables that are matching log
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messages that are ordered.
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* Added a "timeslice()" function to SQLite so that it is easier to
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group log messages by time buckets.
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* The 'goto' command now supports relative time values like
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'a minute ago', 'an hour later', and many more.
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Interface Changes:
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* The 'r/R' hotkeys have been reassigned to navigate through the log
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messages by the relative time value that was last used with the
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'goto' command.
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Fixes:
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* The pretty-print view should now work for text files.
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* Nested fields in JSON logs are now supported for levels, bodies, etc...
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* Tab-completion should work for quoted SQL identifiers.
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* 'lo-fi' mode key shortcut changed to CTRL+L.
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* 'redraw' shortcut removed. Relegated to just a command.
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* Fixed lnav hang in pretty-print mode while doing a dns lookup.
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* The generic log message parser used to extract data has been
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optimized and should be a bit faster.
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lnav v0.7.3:
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Features:
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* Add 'pipe-to' and 'pipe-line-to' commands that pipe the currently
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marked lines or the current log message to a shell command,
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respectively.
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* Added a "pretty-print" view (P hotkey) that tries to reformat log
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messages so that they are easier to read.
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* Added a 'redraw' command (CTRL+L hotkey) to redraw the window in
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case it has been corrupted.
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* Added a 'relative-goto' command to move the current view relative
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to its current position.
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* Experimental support for linking with jemalloc.
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* The plain text view now supports filtering.
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* Added 'next-mark' and 'prev-mark' commands to jump to the next or
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previous bookmarked line (e.g. error, warning, ...)
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* Added a 'zoom-to' command to change the zoom level of the histogram
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view.
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* Log formats can now define their own timestamp formats with the
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'timestamp-format' field.
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Fixes:
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* Autotools scripts overhaul.
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* Added a configure option to disable linking with libtinfo. The newer
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versions of ncurses don't require it, however the build silently pulls
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it in as a dependency, if it is available on the system. This can be
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explicitly disabled using the '--disable-tinfo' option during configure.
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* Fixed the configure script behavior to ignore the values specified using
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the CFLAGS and LDFLAGS environment variables while searching for sqlite3
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when '--with-sqlite3' switch was specified without the prefix.
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* The configure script now recognizes libeditline symlink'ed to masquerade
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as libreadline. This previously used to cause problems at compile time,
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specially on OS X. If you come across this error, use the
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'--with-readline=prefix' switch to specify the path to the correct
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location of libreadline.
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* The order that log formats are tried against a log file is now
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automatically determined so that more specific formats are tested
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before more general ones. The order is determined on startup based on
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how each format matches each other formats sample lines.
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* Command files (i.e. those executed via the '-f' flag) now support
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commands/queries that span more than one line.
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* Added more log levels: stats, debug2 - debug5.
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lnav v0.7.2:
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* Added log formats for vdsm, openstack, and the vmkernel.
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* Added a "lo-fi" mode (L hotkey) that dumps the displayed log lines
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to the terminal without any decorations. The write-to, write-json-to,
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and write-csv-to commands will also write their output to the terminal
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when passed '-' as the file name. This mode can be useful for copying
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plain text lines to the clipboard.
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* (OS X) Text search strings are copied to the system's "find" clipboard.
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Also, when starting a new search, the current value in the "find"
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clipboard can be tab-completed.
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lnav v0.7.1:
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Features:
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* Added an 'environ' SQL table that reflects lnav's environment
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variables. The table can be read and written to using SQL
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SELECT, INSERT, UPDATE, and DELETE statements. Setting variables
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can be a way to use SQL query results in lnav commands.
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* Added a 'jget' SQLite function that can extract fields from a JSON-
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encoded value.
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* Added log formats for the OpenAM identity provider.
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* Added a 'clear-highlight' command to clear previous calls to the
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'highlight' command.
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* Fixed some performance bugs in indexing JSON log formats. Loading
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times should be at least five times faster.
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* Filtering performance should be improved so that enabling/disabling
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filters should be almost instantaneous.
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* The filter-in, filter-out, and highlight commands now support
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tab-completion of text in the current view.
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* Add a '-i' flag that installs format files in: ~/.lnav/formats/installed
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lnav v0.7.0:
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Features:
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* Add the '.schema' SQL command to open a view that displays the schema
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for the internal tables and any attached databases. If lnav was only
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executed with a SQLite database and no text files, this view will open
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by default.
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* The scroll bar now indicates the location of errors/warnings, search
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hits, and bookmarks.
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* The xterm title is update to reflect the file name for the top line
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in the view.
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* Added a "headless" mode so that you can execute commands and run SQL
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queries from the command-line without having to do it from the curses
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UI.
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* When doing a search or SQL query, any text that is currently being
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displayed can be tab-completed.
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* The '-H' option was added so you can view the internal help text.
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* Added the 'g/G' hotkeys to move to the top/bottom of the file.
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* Added a 'log_mark' column to the log tables that indicates whether or
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not a log message is bookmarked. The field is writable, so you can
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bookmark lines using an SQL UPDATE query.
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* Added syntax-highlighting when editing SQL queries or search regexes.
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* Added a "write-json-to" command that writes the result of a SQL query
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to a JSON-formatted file.
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* The "elapsed time" column now uses red/green coloring to indicate
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sharp changes in the message rate.
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* Added a "set-min-log-level" command to filter out log messages that
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are below a given level.
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Fixes:
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* Performance improvements.
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* Multi-line filtering has been fixed.
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* A collator has been added to the log_level column in the log tables
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so that you can write expressions like "log_level > 'warning'".
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* The log_time datetime format now matches what is returned by
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"datetime('now')" so that collating works correctly.
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* If a search string is not valid PCRE syntax, a search is done for
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the exact string instead of just returning an error.
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* Static-linking has been cleaned up.
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* OpenSSL is no longer a requirement.
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* Alpha support for Windows/cygwin.
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* Environment variables can now be accessed in SQL queries using
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the syntax: $VAR_NAME
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* An internal log is kept and written out on a crash.
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* Partition bookmarks are now tracked separately from regular user
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bookmarks. You can start a partition with the 'partition-name'
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command and remove it with the 'clear-partition' command.
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* Improved display of possible matches during tab-completion in the
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command-prompt. The matches are now shown in a separate view and
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pressing tab repeatedly will scroll through the view.
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* The "open" command now does shell word expansion for file names.
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* More config directory paths have been added: /etc/lnav,
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$prefix/etc/lnav, and directories passed on the command-line with -I.
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lnav v0.6.2:
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Features:
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* Word-wrap support.
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Fixes:
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* Fix some OS X Mavericks build/runtime issues.
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lnav v0.6.1:
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Features:
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* Support for JSON-encoded log files.
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Fixes:
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* Some minor fixes and performance improvements.
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lnav v0.6.0:
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Features:
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* Custom log formats and more builtin formats
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* Automatic extraction of data from logs
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* UI improvements, support for 256 color terminals
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lnav v0.5.1:
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Features:
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* Added the '-t' and '-w' options which can be used to prepend a
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timestamp to any data piped in on stdin and to specify a file to
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write the contents of stdin to.
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Fixes:
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* Cleanup for packaging.
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lnav v0.5.0:
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Features:
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* Files can be specified on the command-line using wildcards so that
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new files are automatically loaded. Directories can also be passed
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as command-line arguments to read all of the files in the directory.
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* Builds on cygwin again.
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* Added the 'C' hotkey to clear any existing user bookmarks.
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* Added experimental support for accepting input from mice.
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Fixes:
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* Internal cleanup.
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* Copying to the clipboard on OS X is now supported.
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* Many bug fixes.
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lnav v0.4.0:
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Features:
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* Files that are not recognized as containing log messages have been
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broken out to a separate text files view. You can flip between the
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log view and the text file view with the 't' hotkey. When viewing
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text files, the 'f' hotkey will switch between files.
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* Files compressed with bzip2 are recognized and decompressed on the
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fly.
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* Added a "session" file and command for storing commands that should
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be executed on startup. For example, if you always want some
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highlighting to be done, you can add that command to the session
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file.
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Fixes:
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* Add some more log file formats for generic log files.
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* Performance improvements for compressed files.
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* Works on OS X now.
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lnav v0.3.0:
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Changes:
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* The hotkey for the SQL view was changed to 'v' and 'V' from '.'.
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Features:
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* You can now switch between the SQL result view and the log view while
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keeping the top of the views in sync with the "line_number" column.
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Fixes:
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* The "line_number" column is no longer included in the SQL result view's
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stacked bar graph.
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* Added a "warnings" count to the histogram view.
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