Squashed commit of the following:

commit f5baab4e88
Author: DaneEveritt <dane@daneeveritt.com>
Date:   Sat Jul 9 17:50:53 2022 -0400

    Finalize activity event sending logic and cron config

commit 9830387f21
Author: DaneEveritt <dane@daneeveritt.com>
Date:   Sat Jul 9 16:26:13 2022 -0400

    Send power events in a more usable format

commit 49f3a61d16
Author: DaneEveritt <dane@daneeveritt.com>
Date:   Sat Jul 9 15:47:24 2022 -0400

    Configure cron to actually send to endpoint

commit 28137c4c14
Author: DaneEveritt <dane@daneeveritt.com>
Date:   Sat Jul 9 15:42:29 2022 -0400

    Copy the body buffer otherwise subsequent backoff attempts will not have a buffer to send

commit 20e44bdc55
Author: DaneEveritt <dane@daneeveritt.com>
Date:   Sat Jul 9 14:38:41 2022 -0400

    Add internal logic to process activity events and send them to the panel

commit 0380488cd2
Author: DaneEveritt <dane@daneeveritt.com>
Date:   Mon Jul 4 17:55:17 2022 -0400

    Track power events

commit 9eab08b92f
Author: DaneEveritt <dane@daneeveritt.com>
Date:   Mon Jul 4 17:36:03 2022 -0400

    Initial logic to support logging activity on Wings to send back to the panel

cmd/root.go

@@ -5,6 +5,7 @@ import (
 	"crypto/tls"
 	"errors"
 	"fmt"
+	"github.com/pterodactyl/wings/internal/cron"
 	log2 "log"
 	"net/http"
 	_ "net/http/pprof"
@@ -259,6 +260,13 @@ func rootCmdRun(cmd *cobra.Command, _ []string) {
 		}
 	}()
 
+	if s, err := cron.Scheduler(manager); err != nil {
+		log.WithField("error", err).Fatal("failed to initialize cron system")
+	} else {
+		log.WithField("subsystem", "cron").Info("starting cron processes")
+		s.StartAsync()
+	}
+
 	go func() {
 		// Run the SFTP server.
 		if err := sftp.New(manager).Run(); err != nil {

config/config.go

@@ -163,6 +163,15 @@ type SystemConfiguration struct {
 	// disk usage is not a concern.
 	DiskCheckInterval int64 `default:"150" yaml:"disk_check_interval"`
 
+	// ActivitySendInterval is the amount of time that should ellapse between aggregated server activity
+	// being sent to the Panel. By default this will send activity collected over the last minute. Keep
+	// in mind that only a fixed number of activity log entries, defined by ActivitySendCount, will be sent
+	// in each run.
+	ActivitySendInterval int64 `default:"60" yaml:"activity_send_interval"`
+
+	// ActivitySendCount is the number of activity events to send per batch.
+	ActivitySendCount int64 `default:"100" yaml:"activity_send_count"`
+
 	// If set to true, file permissions for a server will be checked when the process is
 	// booted. This can cause boot delays if the server has a large amount of files. In most
 	// cases disabling this should not have any major impact unless external processes are

go.mod

@@ -37,7 +37,7 @@ require (
 	github.com/pkg/sftp v1.13.4
 	github.com/sabhiram/go-gitignore v0.0.0-20210923224102-525f6e181f06
 	github.com/spf13/cobra v1.4.0
-	github.com/stretchr/testify v1.7.0
+	github.com/stretchr/testify v1.7.5
 	golang.org/x/crypto v0.0.0-20220321153916-2c7772ba3064
 	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
 	gopkg.in/ini.v1 v1.66.4
@@ -46,7 +46,7 @@ require (
 
 require github.com/goccy/go-json v0.9.6
 
-require golang.org/x/sys v0.0.0-20220319134239-a9b59b0215f8 // indirect
+require golang.org/x/sys v0.0.0-20220704084225-05e143d24a9e // indirect
 
 require (
 	github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 // indirect
@@ -54,6 +54,7 @@ require (
 	github.com/Microsoft/hcsshim v0.9.2 // indirect
 	github.com/andybalholm/brotli v1.0.4 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/bwmarrin/snowflake v0.3.0 // indirect
 	github.com/cespare/xxhash/v2 v2.1.2 // indirect
 	github.com/containerd/containerd v1.6.2 // indirect
 	github.com/containerd/fifo v1.0.0 // indirect
@@ -65,6 +66,7 @@ require (
 	github.com/fsnotify/fsnotify v1.5.1 // indirect
 	github.com/gammazero/deque v0.1.1 // indirect
 	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/go-co-op/gocron v1.15.0 // indirect
 	github.com/go-playground/locales v0.14.0 // indirect
 	github.com/go-playground/universal-translator v0.18.0 // indirect
 	github.com/go-playground/validator/v10 v10.10.1 // indirect
@@ -96,11 +98,15 @@ require (
 	github.com/prometheus/client_model v0.2.0 // indirect
 	github.com/prometheus/common v0.32.1 // indirect
 	github.com/prometheus/procfs v0.7.3 // indirect
+	github.com/robfig/cron/v3 v3.0.1 // indirect
 	github.com/sirupsen/logrus v1.8.1 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/ugorji/go/codec v1.2.7 // indirect
 	github.com/ulikunitz/xz v0.5.10 // indirect
 	github.com/xi2/xz v0.0.0-20171230120015-48954b6210f8 // indirect
+	github.com/xujiajun/mmap-go v1.0.1 // indirect
+	github.com/xujiajun/nutsdb v0.9.0 // indirect
+	github.com/xujiajun/utils v0.0.0-20190123093513-8bf096c4f53b // indirect
 	go.uber.org/atomic v1.9.0 // indirect
 	go.uber.org/multierr v1.8.0 // indirect
 	golang.org/x/net v0.0.0-20220225172249-27dd8689420f // indirect
@@ -111,5 +117,5 @@ require (
 	google.golang.org/genproto v0.0.0-20220324131243-acbaeb5b85eb // indirect
 	google.golang.org/grpc v1.45.0 // indirect
 	google.golang.org/protobuf v1.28.0 // indirect
-	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -151,6 +151,8 @@ github.com/buger/jsonparser v1.1.1/go.mod h1:6RYKKt7H4d4+iWqouImQ9R2FZql3VbhNgx2
 github.com/bugsnag/bugsnag-go v0.0.0-20141110184014-b1d153021fcd/go.mod h1:2oa8nejYd4cQ/b0hMIopN0lCRxU0bueqREvZLWFrtK8=
 github.com/bugsnag/osext v0.0.0-20130617224835-0dd3f918b21b/go.mod h1:obH5gd0BsqsP2LwDJ9aOkm/6J86V6lyAXCoQWGw3K50=
 github.com/bugsnag/panicwrap v0.0.0-20151223152923-e2c28503fcd0/go.mod h1:D/8v3kj0zr8ZAKg1AQ6crr+5VwKN5eIywRkfhyM/+dE=
+github.com/bwmarrin/snowflake v0.3.0 h1:xm67bEhkKh6ij1790JB83OujPR5CzNe8QuQqAgISZN0=
+github.com/bwmarrin/snowflake v0.3.0/go.mod h1:NdZxfVWX+oR6y2K0o6qAYv6gIOP9rjG0/E9WsDpxqwE=
 github.com/cenkalti/backoff/v4 v4.1.1/go.mod h1:scbssz8iZGpm3xbr14ovlUdkxfGXNInqkPWOWmG2CLw=
 github.com/cenkalti/backoff/v4 v4.1.2 h1:6Yo7N8UP2K6LWZnW94DLVSSrbobcWdVzAYOisuDPIFo=
 github.com/cenkalti/backoff/v4 v4.1.2/go.mod h1:scbssz8iZGpm3xbr14ovlUdkxfGXNInqkPWOWmG2CLw=
@@ -400,6 +402,8 @@ github.com/gin-contrib/sse v0.1.0 h1:Y/yl/+YNO8GZSjAhjMsSuLt29uWRFHdHYUb5lYOV9qE
 github.com/gin-contrib/sse v0.1.0/go.mod h1:RHrZQHXnP2xjPF+u1gW/2HnVO7nvIa9PG3Gm+fLHvGI=
 github.com/gin-gonic/gin v1.7.7 h1:3DoBmSbJbZAWqXJC3SLjAPfutPJJRN1U5pALB7EeTTs=
 github.com/gin-gonic/gin v1.7.7/go.mod h1:axIBovoeJpVj8S3BwE0uPMTeReE4+AfFtqpqaZ1qq1U=
+github.com/go-co-op/gocron v1.15.0 h1:XmiPazahD9aq0/QdK5toCVHfgTXfrZ/s83RpAgzr6SM=
+github.com/go-co-op/gocron v1.15.0/go.mod h1:On9zUZTv7FBeuj9D/cdYyAWcPUiLqqAx7nsPHd0EmKM=
 github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
@@ -868,6 +872,8 @@ github.com/prometheus/procfs v0.6.0/go.mod h1:cz+aTbrPOrUb4q7XlbU9ygM+/jj0fzG6c1
 github.com/prometheus/procfs v0.7.3 h1:4jVXhlkAyzOScmCkXBTOLRLTz8EeU+eyjrwB/EPq0VU=
 github.com/prometheus/procfs v0.7.3/go.mod h1:cz+aTbrPOrUb4q7XlbU9ygM+/jj0fzG6c1xBZuNvfVA=
 github.com/prometheus/tsdb v0.7.1/go.mod h1:qhTCs0VvXwvX/y3TZrWD7rabWM+ijKTux40TwIPHuXU=
+github.com/robfig/cron/v3 v3.0.1 h1:WdRxkvbJztn8LMz/QEvLN5sBU+xKpSqwwUO1Pjr4qDs=
+github.com/robfig/cron/v3 v3.0.1/go.mod h1:eQICP3HwyT7UooqI/z+Ov+PtYAWygg1TEWWzGIFLtro=
 github.com/rogpeppe/fastuuid v0.0.0-20150106093220-6724a57986af/go.mod h1:XWv6SoW27p1b0cqNHllgS5HIMJraePCO15w5zCzIWYg=
 github.com/rogpeppe/fastuuid v1.1.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=
 github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=
@@ -932,6 +938,7 @@ github.com/stretchr/objx v0.0.0-20180129172003-8a3f7159479f/go.mod h1:HFkY916IF+
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.2.0/go.mod h1:qt09Ya8vawLte6SNmTgCsAVtYtaKzEcn8ATUoHMkEqE=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
 github.com/stretchr/testify v0.0.0-20180303142811-b89eecf5ca5d/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
@@ -940,6 +947,10 @@ github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.7.1 h1:5TQK59W5E3v0r2duFAb7P95B6hEeOyEnHRa8MjYSMTY=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.7.5 h1:s5PTfem8p8EbKQOctVV53k6jCJt3UX4IEJzwh+C324Q=
+github.com/stretchr/testify v1.7.5/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/subosito/gotenv v1.2.0/go.mod h1:N0PQaV/YGNqwC0u51sEeR/aUtSLEXKX9iv69rRypqCw=
 github.com/syndtr/gocapability v0.0.0-20170704070218-db04d3cc01c8/go.mod h1:hkRG7XYTFWNJGYcbNJQlaLq0fg1yr4J4t/NcTQtrfww=
 github.com/syndtr/gocapability v0.0.0-20180916011248-d98352740cb2/go.mod h1:hkRG7XYTFWNJGYcbNJQlaLq0fg1yr4J4t/NcTQtrfww=
@@ -988,6 +999,13 @@ github.com/xi2/xz v0.0.0-20171230120015-48954b6210f8 h1:nIPpBwaJSVYIxUFsDv3M8ofm
 github.com/xi2/xz v0.0.0-20171230120015-48954b6210f8/go.mod h1:HUYIGzjTL3rfEspMxjDjgmT5uz5wzYJKVo23qUhYTos=
 github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
 github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
+github.com/xujiajun/gorouter v1.2.0/go.mod h1:yJrIta+bTNpBM/2UT8hLOaEAFckO+m/qmR3luMIQygM=
+github.com/xujiajun/mmap-go v1.0.1 h1:7Se7ss1fLPPRW+ePgqGpCkfGIZzJV6JPq9Wq9iv/WHc=
+github.com/xujiajun/mmap-go v1.0.1/go.mod h1:CNN6Sw4SL69Sui00p0zEzcZKbt+5HtEnYUsc6BKKRMg=
+github.com/xujiajun/nutsdb v0.9.0 h1:vy8rjDp0Sk/SnTAqg61i+G4NIN/3tBKSdZ6rIyKYVIo=
+github.com/xujiajun/nutsdb v0.9.0/go.mod h1:8ZdTTF0cEQO+wN940htfHYKswFql2iB6Osckx+GmOoU=
+github.com/xujiajun/utils v0.0.0-20190123093513-8bf096c4f53b h1:jKG9OiL4T4xQN3IUrhUpc1tG+HfDXppkgVcrAiiaI/0=
+github.com/xujiajun/utils v0.0.0-20190123093513-8bf096c4f53b/go.mod h1:AZd87GYJlUzl82Yab2kTjx1EyXSQCAfZDhpTo1SQC4k=
 github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
@@ -1199,6 +1217,7 @@ golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5h
 golang.org/x/sys v0.0.0-20181026203630-95b1ffbd15a5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181107165924-66b7b1311ac8/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20181221143128-b4a75ba826a6/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -1296,6 +1315,9 @@ golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20220114195835-da31bd327af9/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220319134239-a9b59b0215f8 h1:OH54vjqzRWmbJ62fjuhxy7AxFFgoHN0/DPc/UrL8cAs=
 golang.org/x/sys v0.0.0-20220319134239-a9b59b0215f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220405210540-1e041c57c461/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220704084225-05e143d24a9e h1:CsOuNlbOuf0mzxJIefr6Q4uAUetRUwZE4qt7VfzP+xo=
+golang.org/x/sys v0.0.0-20220704084225-05e143d24a9e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210220032956-6a3ed077a48d/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
@@ -1557,6 +1579,8 @@ gopkg.in/yaml.v3 v3.0.0-20200605160147-a5ece683394c/go.mod h1:K4uyk7z7BCEPqu6E+C
 gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gotest.tools v2.2.0+incompatible h1:VsBPFP1AI068pPrMxtb/S8Zkgf9xEmTLJjfM+P5UIEo=
 gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
 gotest.tools/v3 v3.0.2/go.mod h1:3SzNCllyD9/Y+b5r9JIKQ474KzkZyqLqEfYqMsX94Bk=

internal/cron/activity_cron.go

@@ -0,0 +1,98 @@
+package cron
+
+import (
+	"context"
+	"emperror.dev/errors"
+	"github.com/apex/log"
+	"github.com/goccy/go-json"
+	"github.com/pterodactyl/wings/internal/database"
+	"github.com/pterodactyl/wings/server"
+	"github.com/pterodactyl/wings/system"
+	"github.com/xujiajun/nutsdb"
+)
+
+var key = []byte("events")
+var processing system.AtomicBool
+
+func processActivityLogs(m *server.Manager, c int64) error {
+	// Don't execute this cron if there is currently one running. Once this task is completed
+	// go ahead and mark it as no longer running.
+	if !processing.SwapIf(true) {
+		return nil
+	}
+	defer processing.Store(false)
+
+	var list [][]byte
+	err := database.DB().View(func(tx *nutsdb.Tx) error {
+		// Grab the oldest 100 activity events that have been logged and send them back to the
+		// Panel for processing. Once completed, delete those events from the database and then
+		// release the lock on this process.
+		end := int(c)
+		if s, err := tx.LSize(database.ServerActivityBucket, key); err != nil {
+			return errors.WithStackIf(err)
+		} else if s < end || s == 0 {
+			if s == 0 {
+				return nil
+			}
+			end = s
+		}
+		l, err := tx.LRange(database.ServerActivityBucket, key, 0, end)
+		if err != nil {
+			// This error is returned when the bucket doesn't exist, which is likely on the
+			// first invocations of Wings since we haven't yet logged any data. There is nothing
+			// that needs to be done if this error occurs.
+			if errors.Is(err, nutsdb.ErrBucket) {
+				return nil
+			}
+			return errors.WithStackIf(err)
+		}
+		list = l
+		return nil
+	})
+
+	if err != nil || len(list) == 0 {
+		return errors.WithStackIf(err)
+	}
+
+	var processed []json.RawMessage
+	for _, l := range list {
+		var v json.RawMessage
+		if err := json.Unmarshal(l, &v); err != nil {
+			log.WithField("error", errors.WithStack(err)).Warn("failed to parse activity event json, skipping entry")
+			continue
+		}
+		processed = append(processed, v)
+	}
+
+	if err := m.Client().SendActivityLogs(context.Background(), processed); err != nil {
+		return errors.WrapIf(err, "cron: failed to send activity events to Panel")
+	}
+
+	return database.DB().Update(func(tx *nutsdb.Tx) error {
+		if m, err := tx.LSize(database.ServerActivityBucket, key); err != nil {
+			return errors.WithStack(err)
+		} else if m > len(list) {
+			// As long as there are more elements than we have in the length of our list
+			// we can just use the existing `LTrim` functionality of nutsdb. This will remove
+			// all of the values we've already pulled and sent to the API.
+			return errors.WithStack(tx.LTrim(database.ServerActivityBucket, key, len(list), -1))
+		} else {
+			i := 0
+			// This is the only way I can figure out to actually empty the items out of the list
+			// because you cannot use `LTrim` (or I cannot for the life of me figure out how) to
+			// trim the slice down to 0 items without it triggering an internal logic error. Perhaps
+			// in a future release they'll have a function to do this (based on my skimming of issues
+			// on GitHub that I cannot read due to translation barriers).
+			for {
+				if i >= m {
+					break
+				}
+				if _, err := tx.LPop(database.ServerActivityBucket, key); err != nil {
+					return errors.WithStack(err)
+				}
+				i++
+			}
+		}
+		return nil
+	})
+}

internal/cron/cron.go

@@ -0,0 +1,36 @@
+package cron
+
+import (
+	"emperror.dev/errors"
+	"github.com/apex/log"
+	"github.com/go-co-op/gocron"
+	"github.com/pterodactyl/wings/config"
+	"github.com/pterodactyl/wings/server"
+	"github.com/pterodactyl/wings/system"
+	"time"
+)
+
+var o system.AtomicBool
+
+// Scheduler configures the internal cronjob system for Wings and returns the scheduler
+// instance to the caller. This should only be called once per application lifecycle, additional
+// calls will result in an error being returned.
+func Scheduler(m *server.Manager) (*gocron.Scheduler, error) {
+	if o.Load() {
+		return nil, errors.New("cron: cannot call scheduler more than once in application lifecycle")
+	}
+	o.Store(true)
+	l, err := time.LoadLocation(config.Get().System.Timezone)
+	if err != nil {
+		return nil, errors.Wrap(err, "cron: failed to parse configured system timezone")
+	}
+
+	s := gocron.NewScheduler(l)
+	_, _ = s.Tag("activity").Every(config.Get().System.ActivitySendInterval).Seconds().Do(func() {
+		if err := processActivityLogs(m, config.Get().System.ActivitySendCount); err != nil {
+			log.WithField("error", err).Error("cron: failed to process activity events")
+		}
+	})
+
+	return s, nil
+}

internal/database/database.go

@@ -0,0 +1,38 @@
+package database
+
+import (
+	"emperror.dev/errors"
+	"github.com/apex/log"
+	"github.com/pterodactyl/wings/config"
+	"github.com/xujiajun/nutsdb"
+	"path/filepath"
+	"sync"
+)
+
+var db *nutsdb.DB
+var syncer sync.Once
+
+const (
+	ServerActivityBucket = "server_activity"
+)
+
+func initialize() error {
+	opt := nutsdb.DefaultOptions
+	opt.Dir = filepath.Join(config.Get().System.RootDirectory, "db")
+
+	instance, err := nutsdb.Open(opt)
+	if err != nil {
+		return errors.WithStack(err)
+	}
+	db = instance
+	return nil
+}
+
+func DB() *nutsdb.DB {
+	syncer.Do(func() {
+		if err := initialize(); err != nil {
+			log.WithField("error", err).Fatal("database: failed to initialize instance, this is an unrecoverable error")
+		}
+	})
+	return db
+}

remote/http.go

@@ -30,6 +30,7 @@ type Client interface {
 	SetInstallationStatus(ctx context.Context, uuid string, successful bool) error
 	SetTransferStatus(ctx context.Context, uuid string, successful bool) error
 	ValidateSftpCredentials(ctx context.Context, request SftpAuthRequest) (SftpAuthResponse, error)
+	SendActivityLogs(ctx context.Context, activity []json.RawMessage) error
 }
 
 type client struct {
@@ -128,10 +129,19 @@ func (c *client) requestOnce(ctx context.Context, method, path string, body io.R
 // and adds the required authentication headers to the request that is being
 // created. Errors returned will be of the RequestError type if there was some
 // type of response from the API that can be parsed.
-func (c *client) request(ctx context.Context, method, path string, body io.Reader, opts ...func(r *http.Request)) (*Response, error) {
+func (c *client) request(ctx context.Context, method, path string, body *bytes.Buffer, opts ...func(r *http.Request)) (*Response, error) {
 	var res *Response
 	err := backoff.Retry(func() error {
-		r, err := c.requestOnce(ctx, method, path, body, opts...)
+		var b bytes.Buffer
+		if body != nil {
+			// We have to create a copy of the body, otherwise attempting this request again will
+			// send no data if there was initially a body since the "requestOnce" method will read
+			// the whole buffer, thus leaving it empty at the end.
+			if _, err := b.Write(body.Bytes()); err != nil {
+				return backoff.Permanent(errors.Wrap(err, "http: failed to copy body buffer"))
+			}
+		}
+		r, err := c.requestOnce(ctx, method, path, &b, opts...)
 		if err != nil {
 			if errors.Is(err, context.Canceled) || errors.Is(err, context.DeadlineExceeded) {
 				return backoff.Permanent(err)

remote/servers.go

@@ -3,6 +3,7 @@ package remote
 import (
 	"context"
 	"fmt"
+	"github.com/goccy/go-json"
 	"strconv"
 	"sync"
 
@@ -178,6 +179,16 @@ func (c *client) SendRestorationStatus(ctx context.Context, backup string, succe
 	return nil
 }
 
+// SendActivityLogs sends activity logs back to the Panel for processing.
+func (c *client) SendActivityLogs(ctx context.Context, activity []json.RawMessage) error {
+	resp, err := c.Post(ctx, "/activity", d{"data": activity})
+	if err != nil {
+		return errors.WithStackIf(err)
+	}
+	_ = resp.Body.Close()
+	return nil
+}
+
 // getServersPaged returns a subset of servers from the Panel API using the
 // pagination query parameters.
 func (c *client) getServersPaged(ctx context.Context, page, limit int) ([]RawServerData, Pagination, error) {

remote/types.go

@@ -2,11 +2,10 @@ package remote
 
 import (
 	"bytes"
-	"regexp"
-	"strings"
-
 	"github.com/apex/log"
 	"github.com/goccy/go-json"
+	"regexp"
+	"strings"
 
 	"github.com/pterodactyl/wings/parser"
 )

router/router.go

@@ -66,6 +66,7 @@ func Configure(m *wserver.Manager, client remote.Client) *gin.Engine {
 		server.DELETE("", deleteServer)
 
 		server.GET("/logs", getServerLogs)
+		server.GET("/activity", getServerActivityLogs)
 		server.POST("/power", postServerPower)
 		server.POST("/commands", postServerCommands)
 		server.POST("/install", postServerInstall)

router/router_server.go

@@ -2,6 +2,9 @@ package router
 
 import (
 	"context"
+	"github.com/goccy/go-json"
+	"github.com/pterodactyl/wings/internal/database"
+	"github.com/xujiajun/nutsdb"
 	"net/http"
 	"os"
 	"strconv"
@@ -40,6 +43,44 @@ func getServerLogs(c *gin.Context) {
 	c.JSON(http.StatusOK, gin.H{"data": out})
 }
 
+// Returns the activity logs tracked internally for the server instance. Note that these
+// logs are routinely cleared out as Wings communicates directly with the Panel to pass
+// along all of the logs for servers it monitors. As activities are passed to the panel
+// they are deleted from Wings.
+//
+// As a result, this endpoint may or may not return data, and the data returned can change
+// between requests.
+func getServerActivityLogs(c *gin.Context) {
+	s := ExtractServer(c)
+
+	var out [][]byte
+	err := database.DB().View(func(tx *nutsdb.Tx) error {
+		items, err := tx.LRange(database.ServerActivityBucket, []byte(s.ID()), 0, 10)
+		if err != nil {
+			return err
+		}
+		out = items
+		return nil
+	})
+
+	if err != nil {
+		middleware.CaptureAndAbort(c, err)
+		return
+	}
+
+	var activity []*server.Activity
+	for _, b := range out {
+		var a server.Activity
+		if err := json.Unmarshal(b, &a); err != nil {
+			middleware.CaptureAndAbort(c, err)
+			return
+		}
+		activity = append(activity, &a)
+	}
+
+	c.JSON(http.StatusOK, gin.H{"data": activity})
+}
+
 // Handles a request to control the power state of a server. If the action being passed
 // through is invalid a 404 is returned. Otherwise, a HTTP/202 Accepted response is returned
 // and the actual power action is run asynchronously so that we don't have to block the

router/tokens/websocket.go

@@ -7,7 +7,6 @@ import (
 
 	"github.com/apex/log"
 	"github.com/gbrlsnchs/jwt/v3"
-	"github.com/goccy/go-json"
 )
 
 // The time at which Wings was booted. No JWT's created before this time are allowed to
@@ -35,13 +34,13 @@ func DenyJTI(jti string) {
 	denylist.Store(jti, time.Now())
 }
 
-// A JWT payload for Websocket connections. This JWT is passed along to the Websocket after
+// WebsocketPayload defines the JWT payload for a websocket connection. This JWT is passed along to
-// it has been connected to by sending an "auth" event.
+// the websocket after it has been connected to by sending an "auth" event.
 type WebsocketPayload struct {
 	jwt.Payload
 	sync.RWMutex
 
-	UserID      json.Number `json:"user_id"`
+	UserUUID    string   `json:"user_uuid"`
 	ServerUUID  string   `json:"server_uuid"`
 	Permissions []string `json:"permissions"`
 }

router/websocket/websocket.go

@@ -40,6 +40,7 @@ type Handler struct {
 	Connection   *websocket.Conn `json:"-"`
 	jwt          *tokens.WebsocketPayload
 	server       *server.Server
+	ra           server.RequestActivity
 	uuid         uuid.UUID
 }
 
@@ -109,6 +110,7 @@ func GetHandler(s *server.Server, w http.ResponseWriter, r *http.Request) (*Hand
 		Connection: conn,
 		jwt:        nil,
 		server:     s,
+		ra:         s.NewRequestActivity("", r.RemoteAddr),
 		uuid:       u,
 	}, nil
 }
@@ -264,6 +266,7 @@ func (h *Handler) GetJwt() *tokens.WebsocketPayload {
 // setJwt sets the JWT for the websocket in a race-safe manner.
 func (h *Handler) setJwt(token *tokens.WebsocketPayload) {
 	h.Lock()
+	h.ra = h.ra.SetUser(token.UserUUID)
 	h.jwt = token
 	h.Unlock()
 }
@@ -365,6 +368,10 @@ func (h *Handler) HandleInbound(ctx context.Context, m Message) error {
 				return nil
 			}
 
+			if err == nil {
+				_ = h.ra.Save(h.server, server.Event(server.ActivityPowerPrefix+action), nil)
+			}
+
 			return err
 		}
 	case SendServerLogsEvent:
@@ -421,6 +428,10 @@ func (h *Handler) HandleInbound(ctx context.Context, m Message) error {
 				}
 			}
 
+			_ = h.ra.Save(h.server, server.ActivityConsoleCommand, server.ActivityMeta{
+				"command": strings.Join(m.Args, ""),
+			})
+
 			return h.server.Environment.SendCommand(strings.Join(m.Args, ""))
 		}
 	}

server/activity.go

@@ -0,0 +1,130 @@
+package server
+
+import (
+	"emperror.dev/errors"
+	"github.com/apex/log"
+	"github.com/goccy/go-json"
+	"github.com/pterodactyl/wings/internal/database"
+	"github.com/xujiajun/nutsdb"
+	"regexp"
+	"time"
+)
+
+type Event string
+type ActivityMeta map[string]interface{}
+
+const ActivityPowerPrefix = "power_"
+
+const (
+	ActivityConsoleCommand = Event("console_command")
+)
+
+var ipTrimRegex = regexp.MustCompile(`(:\d*)?$`)
+
+type Activity struct {
+	// User is UUID of the user that triggered this event, or an empty string if the event
+	// cannot be tied to a specific user, in which case we will assume it was the system
+	// user.
+	User string `json:"user"`
+	// Server is the UUID of the server this event is associated with.
+	Server string `json:"server"`
+	// Event is a string that describes what occurred, and is used by the Panel instance to
+	// properly associate this event in the activity logs.
+	Event Event `json:"event"`
+	// Metadata is either a null value, string, or a JSON blob with additional event specific
+	// metadata that can be provided.
+	Metadata ActivityMeta `json:"metadata"`
+	// IP is the IP address that triggered this event, or an empty string if it cannot be
+	// determined properly.
+	IP        string    `json:"ip"`
+	Timestamp time.Time `json:"timestamp"`
+}
+
+// RequestActivity is a wrapper around a LoggedEvent that is able to track additional request
+// specific metadata including the specific user and IP address associated with all subsequent
+// events. The internal logged event structure can be extracted by calling RequestEvent.Event().
+type RequestActivity struct {
+	server string
+	user   string
+	ip     string
+}
+
+// Event returns the underlying logged event from the RequestEvent instance and sets the
+// specific event and metadata on it.
+func (ra RequestActivity) Event(event Event, metadata ActivityMeta) Activity {
+	return Activity{
+		User:     ra.user,
+		Server:   ra.server,
+		IP:       ra.ip,
+		Event:    event,
+		Metadata: metadata,
+	}
+}
+
+// Save creates a new event instance and saves it. If an error is encountered it is automatically
+// logged to the provided server's error logging output. The error is also returned to the caller
+// but can be ignored.
+func (ra RequestActivity) Save(s *Server, event Event, metadata ActivityMeta) error {
+	if err := ra.Event(event, metadata).Save(); err != nil {
+		s.Log().WithField("error", err).WithField("event", event).Error("activity: failed to save event")
+		return errors.WithStack(err)
+	}
+	return nil
+}
+
+// IP returns the IP address associated with this entry.
+func (ra RequestActivity) IP() string {
+	return ra.ip
+}
+
+// SetUser clones the RequestActivity struct and sets a new user value on the copy
+// before returning it.
+func (ra RequestActivity) SetUser(u string) RequestActivity {
+	c := ra
+	c.user = u
+	return c
+}
+
+// Save logs the provided event using Wings' internal K/V store so that we can then
+// pass it along to the Panel at set intervals. In addition, this will ensure that the events
+// are persisted to the disk, even between instance restarts.
+func (a Activity) Save() error {
+	if a.Timestamp.IsZero() {
+		a.Timestamp = time.Now().UTC()
+	}
+
+	// Since the "RemoteAddr" field can often include a port on the end we need to
+	// trim that off, otherwise it'll fail validation when sent to the Panel.
+	a.IP = ipTrimRegex.ReplaceAllString(a.IP, "")
+
+	value, err := json.Marshal(a)
+	if err != nil {
+		return errors.Wrap(err, "database: failed to marshal activity into json bytes")
+	}
+
+	return database.DB().Update(func(tx *nutsdb.Tx) error {
+		log.WithField("subsystem", "activity").
+			WithFields(log.Fields{"server": a.Server, "user": a.User, "event": a.Event, "ip": a.IP}).
+			Debug("saving activity to database")
+
+		if err := tx.RPush(database.ServerActivityBucket, []byte("events"), value); err != nil {
+			return errors.WithStack(err)
+		}
+		return nil
+	})
+}
+
+func (s *Server) NewRequestActivity(user string, ip string) RequestActivity {
+	return RequestActivity{server: s.ID(), user: user, ip: ip}
+}
+
+// NewActivity creates a new event instance for the server in question.
+func (s *Server) NewActivity(user string, event Event, metadata ActivityMeta, ip string) Activity {
+	return Activity{
+		User:     user,
+		Server:   s.ID(),
+		Event:    event,
+		Metadata: metadata,
+		IP:       ip,
+	}
+}

system/strings.go

@@ -0,0 +1,20 @@
+package system
+
+import (
+	"math/rand"
+	"strings"
+)
+
+const characters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"
+
+// RandomString generates a random string of alpha-numeric characters using a
+// pseudo-random number generator. The output of this function IS NOT cryptographically
+// secure, it is used solely for generating random strings outside a security context.
+func RandomString(n int) string {
+	var b strings.Builder
+	b.Grow(n)
+	for i := 0; i < n; i++ {
+		b.WriteByte(characters[rand.Intn(len(characters))])
+	}
+	return b.String()
+}

wings.go

@@ -2,8 +2,16 @@ package main
 
 import (
 	"github.com/pterodactyl/wings/cmd"
+	"math/rand"
+	"time"
 )
 
 func main() {
+	// Since we make use of the math/rand package in the code, especially for generating
+	// non-cryptographically secure random strings we need to seed the RNG. Just make use
+	// of the current time for this.
+	rand.Seed(time.Now().UnixNano())
+
+	// Execute the main binary code.
 	cmd.Execute()
 }