7 Commits (68987d4e8a91cb431b7fd4c9e9b3e9bfbba4e0c7)

Author	SHA1	Message	Date
Holger Hans Peter Freyther	07552cbf05	res_prometheus: Fix duplicate output of metric and help text ... The prometheus exposition format requires each line to be unique[1]. This is handled by struct prometheus_metric having a list of children that is managed when registering a metric. In case the scrape callback is used, it is the responsibility of the implementation to handle this correctly. Originally the bridge callback didn't handle NULL snapshots, the crash fix lead to NULL metrics, and fixing that lead to duplicates. The original code assumed that snapshots are not NULL and then relied on "if (i > 0)" to establish the parent/children relationship between metrics of the same class. This is not workerable as the first bridge might be invisible/lacks a snapshot. Fix this by keeping a separate array of the first metric by class. Instead of relying on the index of the bridge, check whether the array has an entry. Use that array for the output. Add a test case that verifies that the help text is not duplicated. Resolves: #642 [1] https://prometheus.io/docs/instrumenting/exposition_formats/#grouping-and-sorting (cherry picked from commit d45c8e165f)	1 year ago
Holger Hans Peter Freyther	f335da6b74	res_prometheus: Do not generate broken metrics ... In 8d6fdf9c3a invisible bridges were skipped but that lead to producing metrics with no name and no help. Keep track of the number of metrics configured and then only emit these. Add a basic testcase that verifies that there is no '(NULL)' in the output. ASTERISK-30474	2 years ago
Holger Hans Peter Freyther	8d6fdf9c3a	res_prometheus: Do not crash on invisible bridges ... Avoid crashing by skipping invisible bridges and checking the snapshot for a null pointer. In effect this is how the bridges are enumerated in res/ari/resource_bridges.c already. ASTERISK-30239 ASTERISK-30237 Change-Id: I58ef9f44036feded5966b5fc70ae754f8182883d	3 years ago
Alexander Traud	a85f2bf34d	res: Fix for Doxygen. ... These are the remaining issues found in /res. ASTERISK-29761 Change-Id: I572e6019c422780dde5ce8448b6c85c77af6046d	4 years ago
George Joseph	53c702e1cc	res_prometheus: Clone containers before iterating ... The channels, bridges and endpoints scrape functions were grabbing their respective global containers, getting the count of entries, allocating metric arrays based on that count, then iterating over the container. If the global container had new objects added after the count was taken and the metric arrays were allocated, we'd run out of metric entries and attempt to write past the end of the arrays. Now each of the scape functions clone their respective global containers and all operations are done on the clone. Since the clone is stable between getting the count and iterating over it, we can't run past the end of the metrics array. ASTERISK-29130 Reported-By: Francisco Correia Reported-By: BJ Weschke Reported-By: Sébastien Duthil Change-Id: If0c8e40853bc0e9429f2ba9c7f5f358d90c311af	5 years ago
Matt Jordan	a2648b22eb	res_prometheus: Add CLI commands ... This patch adds a few CLI commands to the res_prometheus module to aid system administrators setting up and configuring the module. This includes: * prometheus show status: Display basic statistics about the Prometheus module, including its essential configuration, when it was last scraped, and how long the scrape took. The last two bits of information are useful when Prometheus isn't generating metrics appropriately, as it will at least tell you if Asterisk has had its HTTP route hit by the remote server. * prometheus show metrics: Dump the current metrics to the CLI. Useful for system administrators to see what metrics are currently available without having to cURL or go to Prometheus itself. ASTERISK-28403 Change-Id: Ic09813e5e14b901571c5c96ebeae2a02566c5172	7 years ago
Matt Jordan	066280f0cc	res_prometheus: Add Asterisk bridge metrics ... This patch adds basic Asterisk bridge statistics to the res_prometheus module. This includes: * asterisk_bridges_count: The current number of bridges active on the system. * asterisk_bridges_channels_count: The number of channels active in a bridge. In all cases, enough information is provided with each bridge metric to determine a unique instance of Asterisk that provided the data, along with the technology, subclass, and creator of the bridge. ASTERISK-28403 Change-Id: Ie27417dd72c5bc7624eb2a7a6a8829d7551788dc	7 years ago