backports for HLL estimates in ActivityLog 1.11.x (#21220)

* backport of commit 2a8a8a8

* backport of commit 1575454

* backport of commit c88c73e

* backport of commit cf60460

* backport of commit 2d12226

* backport of commit 7e72219

* backport of commit 7140730

* backport of commit ff504ad

* backport of commit 687b3d1

---------

Co-authored-by: Hridoy Roy <roy@hashicorp.com>
Co-authored-by: akshya96 <87045294+akshya96@users.noreply.github.com>

changelog/16000.txt

@@ -0,0 +1,3 @@
+```release-note:improvement
+core: Limit activity log client count usage by namespaces
+```

changelog/16146.txt

@@ -0,0 +1,3 @@
+```release-note:improvement
+core/activity: generate hyperloglogs containing clientIds for each month during precomputation
+```

changelog/16162.txt

@@ -0,0 +1,3 @@
+```release-note:improvement
+core/activity: refactor activity log api to reuse partial api functions in activity endpoint when current month is specified
+```

changelog/16184.txt

@@ -0,0 +1,3 @@
+```release-note:improvement
+core/activity: use monthly hyperloglogs to calculate new clients approximation for current month
+```

go.mod

@@ -32,6 +32,7 @@ require (
 	github.com/armon/go-radix v1.0.0
 	github.com/asaskevich/govalidator v0.0.0-20190424111038-f61b66f89f4a
 	github.com/aws/aws-sdk-go v1.37.19
+	github.com/axiomhq/hyperloglog v0.0.0-20220105174342-98591331716a
 	github.com/cenkalti/backoff/v3 v3.2.2
 	github.com/chrismalek/oktasdk-go v0.0.0-20181212195951-3430665dfaa0
 	github.com/client9/misspell v0.3.4
@@ -251,6 +252,7 @@ require (
 	github.com/couchbase/gocbcore/v10 v10.0.4 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/denverdino/aliyungo v0.0.0-20190125010748-a747050bb1ba // indirect
+	github.com/dgryski/go-metro v0.0.0-20180109044635-280f6062b5bc // indirect
 	github.com/digitalocean/godo v1.7.5 // indirect
 	github.com/dimchansky/utfbom v1.1.1 // indirect
 	github.com/dnephin/pflag v1.0.7 // indirect

go.sum

@@ -245,6 +245,8 @@ github.com/aws/aws-sdk-go-v2/service/sts v1.6.1 h1:1Pls85C5CFjhE3aH+h85/hyAk89kQ
 github.com/aws/aws-sdk-go-v2/service/sts v1.6.1/go.mod h1:hLZ/AnkIKHLuPGjEiyghNEdvJ2PP0MgOxcmv9EBJ4xs=
 github.com/aws/smithy-go v1.7.0 h1:+cLHMRrDZvQ4wk+KuQ9yH6eEg6KZEJ9RI2IkDqnygCg=
 github.com/aws/smithy-go v1.7.0/go.mod h1:SObp3lf9smib00L/v3U2eAKG8FyQ7iLrJnQiAmR5n+E=
+github.com/axiomhq/hyperloglog v0.0.0-20220105174342-98591331716a h1:eqjiAL3qooftPm8b9C1GsSSRcmlw7iOva8vdBTmV2PY=
+github.com/axiomhq/hyperloglog v0.0.0-20220105174342-98591331716a/go.mod h1:2stgcRjl6QmW+gU2h5E7BQXg4HU0gzxKWDuT5HviN9s=
 github.com/baiyubin/aliyun-sts-go-sdk v0.0.0-20180326062324-cfa1a18b161f h1:ZNv7On9kyUzm7fvRZumSyy/IUiSC7AzL0I1jKKtwooA=
 github.com/baiyubin/aliyun-sts-go-sdk v0.0.0-20180326062324-cfa1a18b161f/go.mod h1:AuiFmCCPBSrqvVMvuqFuk0qogytodnVFVSN5CeJB8Gc=
 github.com/benbjohnson/clock v1.1.0 h1:Q92kusRqC1XV2MjkWETPvjJVqKetz1OzxZB7mHJLju8=
@@ -462,6 +464,8 @@ github.com/denverdino/aliyungo v0.0.0-20190125010748-a747050bb1ba h1:p6poVbjHDkK
 github.com/denverdino/aliyungo v0.0.0-20190125010748-a747050bb1ba/go.mod h1:dV8lFg6daOBZbT6/BDGIz6Y3WFGn8juu6G+CQ6LHtl0=
 github.com/dgrijalva/jwt-go v0.0.0-20170104182250-a601269ab70c/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
 github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
+github.com/dgryski/go-metro v0.0.0-20180109044635-280f6062b5bc h1:8WFBn63wegobsYAX0YjD+8suexZDga5CctH4CCTx2+8=
+github.com/dgryski/go-metro v0.0.0-20180109044635-280f6062b5bc/go.mod h1:c9O8+fpSOX1DM8cPNSkX/qsBWdkD4yd2dpciOWQjpBw=
 github.com/dgryski/go-sip13 v0.0.0-20181026042036-e10d5fee7954/go.mod h1:vAd38F8PWV+bWy6jNmig1y/TA+kYO4g3RSRF0IAv0no=
 github.com/digitalocean/godo v1.7.5 h1:JOQbAO6QT1GGjor0doT0mXefX2FgUDPOpYh2RaXA+ko=
 github.com/digitalocean/godo v1.7.5/go.mod h1:h6faOIcZ8lWIwNQ+DN7b3CgX4Kwby5T+nbpNqkUIozU=
@@ -1021,6 +1025,7 @@ github.com/imdario/mergo v0.3.12/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH
 github.com/imdario/mergo v0.3.13 h1:lFzP57bqS/wsqKssCGmtLAb8A0wKjLGrve2q3PPVcBk=
 github.com/imdario/mergo v0.3.13/go.mod h1:4lJ1jqUDcsbIECGy0RUJAXNIhg+6ocWgb1ALK2O4oXg=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
+github.com/influxdata/influxdb v1.7.6/go.mod h1:qZna6X/4elxqT3yI9iZYdZrWWdeFOOprn86kgg4+IzY=
 github.com/influxdata/influxdb1-client v0.0.0-20200827194710-b269163b24ab h1:HqW4xhhynfjrtEiiSGcQUd6vrK23iMam1FO8rI7mwig=
 github.com/influxdata/influxdb1-client v0.0.0-20200827194710-b269163b24ab/go.mod h1:qj24IKcXYK6Iy9ceXlo3Tc+vtHo9lIhSX5JddghvEPo=
 github.com/j-keck/arping v0.0.0-20160618110441-2cf9dc699c56/go.mod h1:ymszkNOg6tORTn+6F6j+Jc8TOr5osrynvN6ivFWZ2GA=