This CL setups up kubernetes configuration files necessary to deploy the proxy service to k8s (GKE to be specific). Because kubernetes service can only expose node ports higher than 30000, the default ports that the containers expose are also changed to >30000 so that they are consistent. This is *not* necessary, but makes it easier to remember which ports are for what purpose.
Note that we are not setting up a load balancing service. The way it is set up now, the services are only visible within the clusters, on each node at the specified node ports. The load balancer k8s sets up uses GCP L4 load balancer that does not support IPv6 (because it does not do TCP termination at the LB, rather just routes packages to cluster nodes, and GCE VMs does not support IPv6 yet). The L4 load balancer also only provides regional IPs on the frontend, which means proxies running in different regions (Americas, EMEA, APAC) would all have different IPs, which in turn offload regional routing determination to the DNS system, adding complexity.
A user of the proxy instead should set up TCP proxy load balancing in GCP separately and point traffic to the VM group(s) backing the k8s cluster. This allows for a single global anycast IP (IPv4 and IPv6) to be allocated at the load balancer frontend.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=187046521
It seems that even though the token is supposed to be valid for 60min, in
practice it expires before that. Reducing caching time to 30min solves the
problem (at least as far as I can tell). This should not increase too much load
as we are only calling the API twice an hour instead of once.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=186830395
When a quota request is rejected, increment the metric counter by one.
Also makes both frontend and backend metrics singleton because all the fields they have a static.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=185146804
The quota handler terminates connections when quota is exceeded.
The next CL will add instrumentation for quota related metrics.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=185042675
The TokenStore is configured by a QuotaConfig for a protocol (EPP/WHOIS). It accepts concurrent take, put and refresh request to grant/accept token to the caller.
The QuotaManager contains a TokenStore and provides abstractions that are appropriate for a quota leasing entity to use. Quota return calls are executed asynchronously by the QuotaManager, and quota refresh tasks are scheduled by the QuotaManager to run periodically.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=182109341
The quotas can be configured in the yaml configuration file. Default quota will be applied to any userId that is not matched in the custom quota list.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=178804649
Dagger updated to 2.13, along with all its dependencies.
Also allows us to have multiple config files for different environment (prod, sandbox, alpha, local, etc) and specify which one to use on the command line with a --env flag. Therefore the same binary can be used in all environments.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=176551289
