Expose useful manifest information as prometheus metrics

[terjekv]

For each server and each repository on the server, exports the following to the metrics file:

• Catalogue size
• Revision
• Timestamp
• TTL

# HELP repo_catalogue_size Repository catalogue size
# TYPE repo_catalogue_size gauge
repo_catalogue_size{type="stratum0",server="rug-nl-s0.eessi.science",repository="dev.eessi.io"} 9526272 1761206997670
repo_catalogue_size{type="stratum0",server="rug-nl-s0.eessi.science",repository="riscv.eessi.io"} 26624 1761206997670
repo_catalogue_size{type="stratum0",server="rug-nl-s0.eessi.science",repository="software.eessi.io"} 133120 1761206997670
repo_catalogue_size{type="stratum1",server="aws-eu-central-s1.eessi.science",repository="dev.eessi.io"} 9526272 1761206997670
repo_catalogue_size{type="stratum1",server="aws-eu-central-s1.eessi.science",repository="riscv.eessi.io"} 26624 1761206997670
repo_catalogue_size{type="stratum1",server="aws-eu-central-s1.eessi.science",repository="software.eessi.io"} 133120 1761206997670
repo_catalogue_size{type="stratum1",server="azure-us-east-s1.eessi.science",repository="dev.eessi.io"} 9526272 1761206997670
repo_catalogue_size{type="stratum1",server="azure-us-east-s1.eessi.science",repository="riscv.eessi.io"} 26624 1761206997670
repo_catalogue_size{type="stratum1",server="azure-us-east-s1.eessi.science",repository="software.eessi.io"} 133120 1761206997670
repo_catalogue_size{type="stratum1",server="cvmfs-ext.gridpp.rl.ac.uk:8000",repository="dev.eessi.io"} 9526272 1761206997670
repo_catalogue_size{type="stratum1",server="cvmfs-ext.gridpp.rl.ac.uk:8000",repository="riscv.eessi.io"} 26624 1761206997670
repo_catalogue_size{type="stratum1",server="cvmfs-ext.gridpp.rl.ac.uk:8000",repository="sbn.opensciencegrid.org"} 16384 1761206997670
repo_catalogue_size{type="stratum1",server="cvmfs-ext.gridpp.rl.ac.uk:8000",repository="software.eessi.io"} 133120 1761206997670
repo_catalogue_size{type="syncserver",server="aws-eu-west-s1-sync.eessi.science",repository="dev.eessi.io"} 9526272 1761206997670
repo_catalogue_size{type="syncserver",server="aws-eu-west-s1-sync.eessi.science",repository="riscv.eessi.io"} 26624 1761206997670
repo_catalogue_size{type="syncserver",server="aws-eu-west-s1-sync.eessi.science",repository="software.eessi.io"} 133120 1761206997670
# HELP repo_revision Repository revision
# TYPE repo_revision gauge
repo_revision{type="stratum0",server="rug-nl-s0.eessi.science",repository="dev.eessi.io"} 415 1761206997670
repo_revision{type="stratum0",server="rug-nl-s0.eessi.science",repository="riscv.eessi.io"} 522 1761206997670
repo_revision{type="stratum0",server="rug-nl-s0.eessi.science",repository="software.eessi.io"} 9744 1761206997670
repo_revision{type="stratum1",server="aws-eu-central-s1.eessi.science",repository="dev.eessi.io"} 415 1761206997670
repo_revision{type="stratum1",server="aws-eu-central-s1.eessi.science",repository="riscv.eessi.io"} 522 1761206997670
repo_revision{type="stratum1",server="aws-eu-central-s1.eessi.science",repository="software.eessi.io"} 9744 1761206997670
repo_revision{type="stratum1",server="azure-us-east-s1.eessi.science",repository="dev.eessi.io"} 415 1761206997670
repo_revision{type="stratum1",server="azure-us-east-s1.eessi.science",repository="riscv.eessi.io"} 522 1761206997670
repo_revision{type="stratum1",server="azure-us-east-s1.eessi.science",repository="software.eessi.io"} 9744 1761206997670
repo_revision{type="stratum1",server="cvmfs-ext.gridpp.rl.ac.uk:8000",repository="dev.eessi.io"} 415 1761206997670
repo_revision{type="stratum1",server="cvmfs-ext.gridpp.rl.ac.uk:8000",repository="riscv.eessi.io"} 522 1761206997670
repo_revision{type="stratum1",server="cvmfs-ext.gridpp.rl.ac.uk:8000",repository="sbn.opensciencegrid.org"} 539 1761206997670
repo_revision{type="stratum1",server="cvmfs-ext.gridpp.rl.ac.uk:8000",repository="software.eessi.io"} 9744 1761206997670
repo_revision{type="syncserver",server="aws-eu-west-s1-sync.eessi.science",repository="dev.eessi.io"} 415 1761206997670
repo_revision{type="syncserver",server="aws-eu-west-s1-sync.eessi.science",repository="riscv.eessi.io"} 522 1761206997670
repo_revision{type="syncserver",server="aws-eu-west-s1-sync.eessi.science",repository="software.eessi.io"} 9744 1761206997670
# HELP repo_timestamp Repository timestamp
# TYPE repo_timestamp gauge
repo_timestamp{type="stratum0",server="rug-nl-s0.eessi.science",repository="dev.eessi.io"} 1760706941 1761206997670
repo_timestamp{type="stratum0",server="rug-nl-s0.eessi.science",repository="riscv.eessi.io"} 1750670430 1761206997670
repo_timestamp{type="stratum0",server="rug-nl-s0.eessi.science",repository="software.eessi.io"} 1761150935 1761206997670
repo_timestamp{type="stratum1",server="aws-eu-central-s1.eessi.science",repository="dev.eessi.io"} 1760706941 1761206997670
repo_timestamp{type="stratum1",server="aws-eu-central-s1.eessi.science",repository="riscv.eessi.io"} 1750670430 1761206997670
repo_timestamp{type="stratum1",server="aws-eu-central-s1.eessi.science",repository="software.eessi.io"} 1761150935 1761206997670
repo_timestamp{type="stratum1",server="azure-us-east-s1.eessi.science",repository="dev.eessi.io"} 1760706941 1761206997670
repo_timestamp{type="stratum1",server="azure-us-east-s1.eessi.science",repository="riscv.eessi.io"} 1750670430 1761206997670
repo_timestamp{type="stratum1",server="azure-us-east-s1.eessi.science",repository="software.eessi.io"} 1761150935 1761206997670
repo_timestamp{type="stratum1",server="cvmfs-ext.gridpp.rl.ac.uk:8000",repository="dev.eessi.io"} 1760706941 1761206997670
repo_timestamp{type="stratum1",server="cvmfs-ext.gridpp.rl.ac.uk:8000",repository="riscv.eessi.io"} 1750670430 1761206997670
repo_timestamp{type="stratum1",server="cvmfs-ext.gridpp.rl.ac.uk:8000",repository="sbn.opensciencegrid.org"} 1760963675 1761206997670
repo_timestamp{type="stratum1",server="cvmfs-ext.gridpp.rl.ac.uk:8000",repository="software.eessi.io"} 1761150935 1761206997670
repo_timestamp{type="syncserver",server="aws-eu-west-s1-sync.eessi.science",repository="dev.eessi.io"} 1760706941 1761206997670
repo_timestamp{type="syncserver",server="aws-eu-west-s1-sync.eessi.science",repository="riscv.eessi.io"} 1750670430 1761206997670
repo_timestamp{type="syncserver",server="aws-eu-west-s1-sync.eessi.science",repository="software.eessi.io"} 1761150935 1761206997670
# HELP repo_ttl Repository TTL
# TYPE repo_ttl gauge
repo_ttl{type="stratum0",server="rug-nl-s0.eessi.science",repository="dev.eessi.io"} 240 1761206997670
repo_ttl{type="stratum0",server="rug-nl-s0.eessi.science",repository="riscv.eessi.io"} 240 1761206997670
repo_ttl{type="stratum0",server="rug-nl-s0.eessi.science",repository="software.eessi.io"} 240 1761206997670
repo_ttl{type="stratum1",server="aws-eu-central-s1.eessi.science",repository="dev.eessi.io"} 240 1761206997670
repo_ttl{type="stratum1",server="aws-eu-central-s1.eessi.science",repository="riscv.eessi.io"} 240 1761206997670
repo_ttl{type="stratum1",server="aws-eu-central-s1.eessi.science",repository="software.eessi.io"} 240 1761206997670
repo_ttl{type="stratum1",server="azure-us-east-s1.eessi.science",repository="dev.eessi.io"} 240 1761206997670
repo_ttl{type="stratum1",server="azure-us-east-s1.eessi.science",repository="riscv.eessi.io"} 240 1761206997670
repo_ttl{type="stratum1",server="azure-us-east-s1.eessi.science",repository="software.eessi.io"} 240 1761206997670
repo_ttl{type="stratum1",server="cvmfs-ext.gridpp.rl.ac.uk:8000",repository="dev.eessi.io"} 240 1761206997670
repo_ttl{type="stratum1",server="cvmfs-ext.gridpp.rl.ac.uk:8000",repository="riscv.eessi.io"} 240 1761206997670
repo_ttl{type="stratum1",server="cvmfs-ext.gridpp.rl.ac.uk:8000",repository="sbn.opensciencegrid.org"} 240 1761206997670
repo_ttl{type="stratum1",server="cvmfs-ext.gridpp.rl.ac.uk:8000",repository="software.eessi.io"} 240 1761206997670
repo_ttl{type="syncserver",server="aws-eu-west-s1-sync.eessi.science",repository="dev.eessi.io"} 240 1761206997670
repo_ttl{type="syncserver",server="aws-eu-west-s1-sync.eessi.science",repository="riscv.eessi.io"} 240 1761206997670
repo_ttl{type="syncserver",server="aws-eu-west-s1-sync.eessi.science",repository="software.eessi.io"} 240 1761206997670

Fixes #3

[terjekv]

Also adds a labeled status version, so we get:

# HELP status_overview Status overview
# TYPE status_overview gauge
status_overview{category="overall"} 0 1761206997670
status_overview{category="stratum0"} 0 1761206997670
status_overview{category="stratum1"} 0 1761206997670
status_overview{category="syncservers"} 0 1761206997670
status_overview{category="repositories"} 0 1761206997670

To eventually replace the single-element status values (right now both are exported):

# HELP eessi_status EESSI status
# TYPE eessi_status gauge
eessi_status 0 1761206997670
# HELP stratum0_status Stratum0 status
# TYPE stratum0_status gauge
stratum0_status 0 1761206997670
# HELP stratum1_status Stratum1 status
# TYPE stratum1_status gauge
stratum1_status 0 1761206997670
# HELP syncservers_status SyncServers status
# TYPE syncservers_status gauge
syncservers_status 0 1761206997670
# HELP repositories_status Repositories status
# TYPE repositories_status gauge
repositories_status 0 1761206997670

Notice that EESSI status is replaced by overall in the labels version.