feat: Supervisord input plugin (#9015)
This commit is contained in:
niasar
GitHub
parent
401d2b2a28
commit
b80d34a422
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@ -188,6 +188,7 @@ following works:
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- github.com/karrick/godirwalk [BSD 2-Clause "Simplified" License](https://github.com/karrick/godirwalk/blob/master/LICENSE)
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- github.com/kballard/go-shellquote [MIT License](https://github.com/kballard/go-shellquote/blob/master/LICENSE)
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- github.com/klauspost/compress [BSD 3-Clause Clear License](https://github.com/klauspost/compress/blob/master/LICENSE)
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- github.com/kolo/xmlrpc [MIT License](https://github.com/kolo/xmlrpc/blob/master/LICENSE)
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- github.com/kylelemons/godebug [Apache License 2.0](https://github.com/kylelemons/godebug/blob/master/LICENSE)
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- github.com/leodido/ragel-machinery [MIT License](https://github.com/leodido/ragel-machinery/blob/develop/LICENSE)
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- github.com/magiconair/properties [BSD 2-Clause "Simplified" License](https://github.com/magiconair/properties/blob/main/LICENSE.md)
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1
go.mod
1
go.mod
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@ -302,6 +302,7 @@ require (
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github.com/juju/webbrowser v1.0.0 // indirect
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github.com/julienschmidt/httprouter v1.3.0 // indirect
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github.com/klauspost/compress v1.15.8 // indirect
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github.com/kolo/xmlrpc v0.0.0-20201022064351-38db28db192b
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github.com/kr/fs v0.1.0 // indirect
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github.com/kylelemons/godebug v1.1.0 // indirect
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github.com/leodido/ragel-machinery v0.0.0-20181214104525-299bdde78165 // indirect
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3
go.sum
3
go.sum
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@ -1524,6 +1524,8 @@ github.com/klauspost/crc32 v0.0.0-20161016154125-cb6bfca970f6/go.mod h1:+ZoRqAPR
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github.com/klauspost/pgzip v1.0.2-0.20170402124221-0bf5dcad4ada/go.mod h1:Ch1tH69qFZu15pkjo5kYi6mth2Zzwzt50oCQKQE9RUs=
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github.com/klauspost/pgzip v1.2.4/go.mod h1:Ch1tH69qFZu15pkjo5kYi6mth2Zzwzt50oCQKQE9RUs=
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github.com/klauspost/pgzip v1.2.5/go.mod h1:Ch1tH69qFZu15pkjo5kYi6mth2Zzwzt50oCQKQE9RUs=
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github.com/kolo/xmlrpc v0.0.0-20201022064351-38db28db192b h1:iNjcivnc6lhbvJA3LD622NPrUponluJrBWPIwGG/3Bg=
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github.com/kolo/xmlrpc v0.0.0-20201022064351-38db28db192b/go.mod h1:pcaDhQK0/NJZEvtCO0qQPPropqV0sJOJ6YW7X+9kRwM=
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github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
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github.com/konsorten/go-windows-terminal-sequences v1.0.2/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
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github.com/konsorten/go-windows-terminal-sequences v1.0.3/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
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@ -3339,6 +3341,7 @@ k8s.io/cri-api v0.20.6/go.mod h1:ew44AjNXwyn1s0U4xCKGodU7J1HzBeZ1MpGrpa5r8Yc=
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k8s.io/gengo v0.0.0-20200413195148-3a45101e95ac/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
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k8s.io/gengo v0.0.0-20210813121822-485abfe95c7c/go.mod h1:FiNAH4ZV3gBg2Kwh89tzAEV2be7d5xI0vBa/VySYy3E=
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k8s.io/klog v1.0.0/go.mod h1:4Bi6QPql/J/LkTDqv7R/cd3hPo4k2DG6Ptcz060Ez5I=
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k8s.io/klog v1.0.0/go.mod h1:4Bi6QPql/J/LkTDqv7R/cd3hPo4k2DG6Ptcz060Ez5I=
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k8s.io/klog/v2 v2.0.0/go.mod h1:PBfzABfn139FHAV07az/IF9Wp1bkk3vpT2XSJ76fSDE=
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k8s.io/klog/v2 v2.2.0/go.mod h1:Od+F08eJP+W3HUb4pSrPpgp9DGU4GzlpG/TmITuYh/Y=
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k8s.io/klog/v2 v2.4.0/go.mod h1:Od+F08eJP+W3HUb4pSrPpgp9DGU4GzlpG/TmITuYh/Y=
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@ -187,6 +187,7 @@ import (
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_ "github.com/influxdata/telegraf/plugins/inputs/sqlserver"
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_ "github.com/influxdata/telegraf/plugins/inputs/stackdriver"
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_ "github.com/influxdata/telegraf/plugins/inputs/statsd"
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_ "github.com/influxdata/telegraf/plugins/inputs/supervisor"
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_ "github.com/influxdata/telegraf/plugins/inputs/suricata"
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_ "github.com/influxdata/telegraf/plugins/inputs/swap"
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_ "github.com/influxdata/telegraf/plugins/inputs/synproxy"
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@ -0,0 +1,101 @@
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# Supervisor Input Plugin
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This plugin gathers information about processes that
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running under supervisor using XML-RPC API.
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Minimum tested version of supervisor: 3.3.2
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## Supervisor configuration
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This plugin needs an HTTP server to be enabled in supervisor,
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also it's recommended to enable basic authentication on the
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HTTP server. When using basic authentication make sure to
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include the username and password in the plugin's url setting.
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Here is an example of the `inet_http_server` section in supervisor's
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config that will work with default plugin configuration:
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```ini
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[inet_http_server]
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port = 127.0.0.1:9001
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username = user
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password = pass
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```
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## Configuration
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```toml
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[inputs.supervisor]
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## Url of supervisor's XML-RPC endpoint if basic auth enabled in supervisor http server,
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## than you have to add credentials to url (ex. http://login:pass@localhost:9001/RPC2)
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# url="http://localhost:9001/RPC2"
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## With settings below you can manage gathering additional information about processes
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## If both of them empty, then all additional information will be collected.
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## Currently supported supported additional metrics are: pid, rc
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# metrics_include = []
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# metrics_exclude = ["pid", "rc"]
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```
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### Optional metrics
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You can control gathering of some supervisor's metrics (processes PIDs
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and exit codes) by setting metrics_include and metrics_exclude parameters
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in configuration file.
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### Server tag
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Server tag is used to identify metrics source server. You have an option
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to use host:port pair of supervisor's http endpoint by default or you
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can use supervisor's identification string, which is set in supervisor's
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configuration file.
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## Metrics
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- supervisor_processes
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- Tags:
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- source (Hostname or IP address of supervisor's instance)
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- port (Port number of supervisor's HTTP server)
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- id (Supervisor's identification string)
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- name (Process name)
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- group (Process group)
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- Fields:
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- state (int, see reference)
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- uptime (int, seconds)
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- pid (int, optional)
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- exitCode (int, optional)
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- supervisor_instance
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- Tags:
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- source (Hostname or IP address of supervisor's instance)
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- port (Port number of supervisor's HTTP server)
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- id (Supervisor's identification string)
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- Fields:
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- state (int, see reference)
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### Supervisor process state field reference table
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|Statecode|Statename| Description |
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|--------|----------|--------------------------------------------------------------------------------------------------------|
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| 0 | STOPPED | The process has been stopped due to a stop request or has never been started. |
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| 10 | STARTING | The process is starting due to a start request. |
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| 20 | RUNNING | The process is running. |
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| 30 | BACKOFF |The process entered the STARTING state but subsequently exited too quickly to move to the RUNNING state.|
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| 40 | STOPPING | The process is stopping due to a stop request. |
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| 100 | EXITED | The process exited from the RUNNING state (expectedly or unexpectedly). |
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| 200 | FATAL | The process could not be started successfully. |
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| 1000 | UNKNOWN | The process is in an unknown state (supervisord programming error). |
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### Supervisor instance state field reference
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|Statecode| Statename | Description |
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|---------|------------|----------------------------------------------|
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| 2 | FATAL | Supervisor has experienced a serious error. |
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| 1 | RUNNING | Supervisor is working normally. |
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| 0 | RESTARTING | Supervisor is in the process of restarting. |
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| -1 | SHUTDOWN |Supervisor is in the process of shutting down.|
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## Example Output
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```shell
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supervisor_processes,group=ExampleGroup,id=supervisor,port=9001,process=ExampleProcess,source=localhost state=20i,uptime=75958i 1659786637000000000
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supervisor_instance,id=supervisor,port=9001,source=localhost state=1i 1659786637000000000
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```
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@ -0,0 +1,10 @@
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# Gathers information about processes that running under supervisor using XML-RPC API
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[[inputs.supervisor]]
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## Url of supervisor's XML-RPC endpoint if basic auth enabled in supervisor http server,
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## than you have to add credentials to url (ex. http://login:pass@localhost:9001/RPC2)
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# url="http://localhost:9001/RPC2"
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## With settings below you can manage gathering additional information about processes
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## If both of them empty, then all additional information will be collected.
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## Currently supported supported additional metrics are: pid, rc
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# metrics_include = []
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# metrics_exclude = ["pid", "rc"]
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@ -0,0 +1,180 @@
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package supervisor
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import (
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_ "embed"
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"fmt"
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"net/url"
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"strings"
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"github.com/kolo/xmlrpc"
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"github.com/influxdata/telegraf"
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"github.com/influxdata/telegraf/filter"
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"github.com/influxdata/telegraf/plugins/inputs"
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)
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type Supervisor struct {
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Server string `toml:"url"`
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MetricsInc []string `toml:"metrics_include"`
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MetricsExc []string `toml:"metrics_exclude"`
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Log telegraf.Logger `toml:"-"`
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rpcClient *xmlrpc.Client
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fieldFilter filter.Filter
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}
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type processInfo struct {
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Name string `xmlrpc:"name"`
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Group string `xmlrpc:"group"`
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Description string `xmlrpc:"description"`
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Start int32 `xmlrpc:"start"`
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Stop int32 `xmlrpc:"stop"`
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Now int32 `xmlrpc:"now"`
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State int16 `xmlrpc:"state"`
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Statename string `xmlrpc:"statename"`
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StdoutLogfile string `xmlrpc:"stdout_logfile"`
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StderrLogfile string `xmlrpc:"stderr_logfile"`
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SpawnErr string `xmlrpc:"spawnerr"`
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ExitStatus int8 `xmlrpc:"exitstatus"`
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Pid int32 `xmlrpc:"pid"`
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}
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type supervisorInfo struct {
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StateCode int8 `xmlrpc:"statecode"`
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StateName string `xmlrpc:"statename"`
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Ident string
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}
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// DO NOT REMOVE THE NEXT TWO LINES! This is required to embed the sampleConfig data.
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//go:embed sample.conf
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var sampleConfig string
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func (s *Supervisor) Description() string {
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return "Gather info about processes state, that running under supervisor using its XML-RPC API"
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}
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func (s *Supervisor) SampleConfig() string {
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return sampleConfig
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}
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func (s *Supervisor) Gather(acc telegraf.Accumulator) error {
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// API call to get information about all running processes
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var rawProcessData []processInfo
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err := s.rpcClient.Call("supervisor.getAllProcessInfo", nil, &rawProcessData)
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if err != nil {
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return fmt.Errorf("failed to get processes info: %v", err)
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}
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// API call to get information about instance status
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var status supervisorInfo
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err = s.rpcClient.Call("supervisor.getState", nil, &status)
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if err != nil {
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return fmt.Errorf("failed to get processes info: %v", err)
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}
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// API call to get identification string
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err = s.rpcClient.Call("supervisor.getIdentification", nil, &status.Ident)
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if err != nil {
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return fmt.Errorf("failed to get instance identification: %v", err)
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}
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// Iterating through array of structs with processes info and adding fields to accumulator
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for _, process := range rawProcessData {
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processTags, processFields, err := s.parseProcessData(process, status)
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if err != nil {
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acc.AddError(err)
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continue
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}
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acc.AddFields("supervisor_processes", processFields, processTags)
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}
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// Adding instance info fields to accumulator
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instanceTags, instanceFields, err := s.parseInstanceData(status)
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if err != nil {
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return fmt.Errorf("failed to parse instance data: %v", err)
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}
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acc.AddFields("supervisor_instance", instanceFields, instanceTags)
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return nil
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}
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func (s *Supervisor) parseProcessData(pInfo processInfo, status supervisorInfo) (map[string]string, map[string]interface{}, error) {
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tags := map[string]string{
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"process": pInfo.Name,
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"group": pInfo.Group,
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}
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fields := map[string]interface{}{
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"uptime": pInfo.Now - pInfo.Start,
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"state": pInfo.State,
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}
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if s.fieldFilter.Match("pid") {
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fields["pid"] = pInfo.Pid
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}
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if s.fieldFilter.Match("rc") {
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fields["exitCode"] = pInfo.ExitStatus
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}
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splittedURL, err := beautifyServerString(s.Server)
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if err != nil {
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return nil, nil, fmt.Errorf("failed to parse server string: %v", err)
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}
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tags["id"] = status.Ident
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tags["source"] = splittedURL[0]
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tags["port"] = splittedURL[1]
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return tags, fields, nil
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}
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// Parsing of supervisor instance data
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func (s *Supervisor) parseInstanceData(status supervisorInfo) (map[string]string, map[string]interface{}, error) {
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splittedURL, err := beautifyServerString(s.Server)
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if err != nil {
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return nil, nil, fmt.Errorf("failed to parse server string: %v", err)
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}
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tags := map[string]string{}
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tags["id"] = status.Ident
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tags["source"] = splittedURL[0]
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tags["port"] = splittedURL[1]
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fields := map[string]interface{}{"state": status.StateCode}
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return tags, fields, nil
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}
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func (s *Supervisor) Init() error {
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// Using default server URL if none was specified in config
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if s.Server == "" {
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s.Server = "http://localhost:9001/RPC2"
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}
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var err error
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// Initializing XML-RPC client
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s.rpcClient, err = xmlrpc.NewClient(s.Server, nil)
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if err != nil {
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return fmt.Errorf("XML-RPC client initialization failed: %v", err)
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}
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// Setting filter for additional metrics
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s.fieldFilter, err = filter.NewIncludeExcludeFilter(s.MetricsInc, s.MetricsExc)
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if err != nil {
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return fmt.Errorf("metrics filter setup failed: %v", err)
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}
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return nil
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}
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func init() {
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inputs.Add("supervisor", func() telegraf.Input {
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return &Supervisor{
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MetricsExc: []string{"pid", "rc"},
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}
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})
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}
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// Function to get only address and port from URL
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func beautifyServerString(rawurl string) ([]string, error) {
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parsedURL, err := url.Parse(rawurl)
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splittedURL := strings.Split(parsedURL.Host, ":")
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if err != nil {
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return nil, err
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}
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if len(splittedURL) < 2 {
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if parsedURL.Scheme == "https" {
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splittedURL[1] = "443"
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} else {
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splittedURL[1] = "80"
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}
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}
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return splittedURL, nil
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}
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@ -0,0 +1,176 @@
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package supervisor
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import (
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"path/filepath"
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"testing"
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"github.com/docker/go-connections/nat"
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"github.com/influxdata/telegraf/testutil"
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"github.com/stretchr/testify/require"
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"github.com/testcontainers/testcontainers-go/wait"
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)
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func TestShort_SampleData(t *testing.T) {
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testCases := []struct {
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desc string
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supervisorData supervisorInfo
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sampleProcInfo []processInfo
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expProcessFields []map[string]interface{}
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expProcessTags []map[string]string
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expInstanceFields map[string]interface{}
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expInstancesTags map[string]string
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}{
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{
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desc: "Case 1",
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sampleProcInfo: []processInfo{
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{
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Name: "Process0",
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Group: "ProcessGroup0",
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Description: "pid 112 uptime 0:12:11",
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Start: 1615632853,
|
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Stop: 0,
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Now: 1615632853 + 731,
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State: 20,
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Statename: "RUNNING",
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StdoutLogfile: "/var/log/supervisor/process0-stdout.log",
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StderrLogfile: "/var/log/supervisor/process0-stdout.log",
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SpawnErr: "",
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ExitStatus: 0,
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Pid: 112,
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},
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{
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Name: "Process1",
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Group: "ProcessGroup1",
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Description: "pid 113 uptime 0:12:11",
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Start: 1615632853,
|
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Stop: 0,
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Now: 1615632853 + 731,
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State: 20,
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Statename: "RUNNING",
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StdoutLogfile: "/var/log/supervisor/process1-stdout.log",
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StderrLogfile: "/var/log/supervisor/process1-stderr.log",
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SpawnErr: "",
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ExitStatus: 0,
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Pid: 113,
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},
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},
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supervisorData: supervisorInfo{
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StateCode: int8(1),
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StateName: "RUNNING",
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Ident: "supervisor",
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},
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||||
expProcessFields: []map[string]interface{}{
|
||||
{
|
||||
"uptime": int32(731),
|
||||
"state": int16(20),
|
||||
"pid": int32(112),
|
||||
"exitCode": int8(0),
|
||||
},
|
||||
{
|
||||
"uptime": int32(731),
|
||||
"state": int16(20),
|
||||
"pid": int32(113),
|
||||
"exitCode": int8(0),
|
||||
},
|
||||
},
|
||||
expProcessTags: []map[string]string{
|
||||
{
|
||||
"process": "Process0",
|
||||
"group": "ProcessGroup0",
|
||||
"source": "example.org",
|
||||
"port": "9001",
|
||||
"id": "supervisor",
|
||||
},
|
||||
{
|
||||
"process": "Process1",
|
||||
"group": "ProcessGroup1",
|
||||
"source": "example.org",
|
||||
"port": "9001",
|
||||
"id": "supervisor",
|
||||
},
|
||||
},
|
||||
expInstanceFields: map[string]interface{}{
|
||||
"state": int8(1),
|
||||
},
|
||||
expInstancesTags: map[string]string{
|
||||
"source": "example.org",
|
||||
"port": "9001",
|
||||
"id": "supervisor",
|
||||
},
|
||||
},
|
||||
}
|
||||
for _, tC := range testCases {
|
||||
t.Run(tC.desc, func(t *testing.T) {
|
||||
s := &Supervisor{
|
||||
Server: "http://example.org:9001/RPC2",
|
||||
MetricsInc: []string{},
|
||||
MetricsExc: []string{},
|
||||
}
|
||||
status := supervisorInfo{
|
||||
StateCode: tC.supervisorData.StateCode,
|
||||
StateName: tC.supervisorData.StateName,
|
||||
Ident: tC.supervisorData.Ident,
|
||||
}
|
||||
err := s.Init()
|
||||
if err != nil {
|
||||
t.Errorf("failed to run Init function: %v", err)
|
||||
}
|
||||
for k, v := range tC.sampleProcInfo {
|
||||
processTags, processFields, err := s.parseProcessData(v, status)
|
||||
require.NoError(t, err)
|
||||
require.Equal(t, tC.expProcessFields[k], processFields)
|
||||
require.Equal(t, tC.expProcessTags[k], processTags)
|
||||
}
|
||||
instanceTags, instanceFields, err := s.parseInstanceData(status)
|
||||
require.NoError(t, err)
|
||||
require.Equal(t, tC.expInstancesTags, instanceTags)
|
||||
require.Equal(t, tC.expInstanceFields, instanceFields)
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func TestIntegration_BasicGathering(t *testing.T) {
|
||||
if testing.Short() {
|
||||
t.Skip("Skipping integration test in short mode")
|
||||
}
|
||||
const supervisorPort = "9001"
|
||||
supervisorConfig, err := filepath.Abs("testdata/supervisord.conf")
|
||||
require.NoError(t, err, "Failed to get absolute path of supervisord config")
|
||||
ctr := testutil.Container{
|
||||
Image: "niasar/supervisor:stretch-3.3",
|
||||
ExposedPorts: []string{supervisorPort},
|
||||
BindMounts: map[string]string{
|
||||
"/etc/supervisor/supervisord.conf": supervisorConfig,
|
||||
},
|
||||
WaitingFor: wait.ForAll(
|
||||
wait.ForLog("supervisord started with pid"),
|
||||
wait.ForListeningPort(nat.Port(supervisorPort)),
|
||||
),
|
||||
}
|
||||
err = ctr.Start()
|
||||
require.NoError(t, err, "failed to start container")
|
||||
defer func() {
|
||||
require.NoError(t, ctr.Terminate(), "terminating container failed")
|
||||
}()
|
||||
s := &Supervisor{
|
||||
Server: "http://login:pass@" + testutil.GetLocalHost() + ":" + ctr.Ports[supervisorPort] + "/RPC2",
|
||||
MetricsInc: []string{},
|
||||
MetricsExc: []string{},
|
||||
}
|
||||
err = s.Init()
|
||||
require.NoError(t, err, "failed to run Init function")
|
||||
var acc testutil.Accumulator
|
||||
err = acc.GatherError(s.Gather)
|
||||
require.NoError(t, err)
|
||||
require.Equal(t, acc.HasField("supervisor_processes", "uptime"), true)
|
||||
require.Equal(t, acc.HasField("supervisor_processes", "state"), true)
|
||||
require.Equal(t, acc.HasField("supervisor_processes", "pid"), true)
|
||||
require.Equal(t, acc.HasField("supervisor_processes", "exitCode"), true)
|
||||
require.Equal(t, acc.HasField("supervisor_instance", "state"), true)
|
||||
require.Equal(t, acc.HasTag("supervisor_processes", "id"), true)
|
||||
require.Equal(t, acc.HasTag("supervisor_processes", "source"), true)
|
||||
require.Equal(t, acc.HasTag("supervisor_processes", "port"), true)
|
||||
require.Equal(t, acc.HasTag("supervisor_instance", "id"), true)
|
||||
require.Equal(t, acc.HasTag("supervisor_instance", "source"), true)
|
||||
require.Equal(t, acc.HasTag("supervisor_instance", "port"), true)
|
||||
}
|
||||
|
|
@ -0,0 +1,22 @@
|
|||
[inet_http_server]
|
||||
port = 0.0.0.0:9001
|
||||
username = login
|
||||
password = pass
|
||||
|
||||
[supervisord]
|
||||
logfile=/dev/stdout
|
||||
pidfile=/var/run/supervisord.pid
|
||||
logfile_maxbytes = 0
|
||||
nodaemon = true
|
||||
|
||||
[rpcinterface:supervisor]
|
||||
supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface
|
||||
|
||||
[supervisorctl]
|
||||
serverurl=http://localhost:9001
|
||||
|
||||
[program:sleep]
|
||||
process_name = %(program_name)s-%(process_num)s
|
||||
command=/bin/sleep infinity
|
||||
numprocs=3
|
||||
autorestart=true
|
||||
Loading…
Reference in New Issue