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Some caveats: - This doesn't abide yet to the agreed API as declared in linkerd/linkerd2-proxy-api#388 . Instead, this is based on an earlier API proposal using "specifiers" to define the buckets keys. - The limiting logic has been added directly into the inbound http policy middleware. It relies on [governor](https://docs.rs/governor/latest/governor/). If we're not allowing to configure bursting in the first implementation, we might reconsider implementing something simpler directly ourselves. - There is actually an additional middleware (`RateLimitPolicyService`) that is currently commented out (used in the initial demo), that implemented a simpler approach, inspired by Tower's own rate-limiting middleware.
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| // A list of identity suffixes. | ||
| // | ||
| // If this contains an empty suffix, all identities are matched. | ||
| repeated IdentitySuffix suffixes = 2; |
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We're not planning on shipping suffix matches in the first version so it can be omitted.
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Ok, I guess I'll still leave the ClientIdentities wrapper to leave room to add this back again in the future.
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This adds an entry for `HttpLocalRateLimit` under `ProxyProtocol.Detect`, `ProxyProtocol.Http1` and `ProxyProtocol.Http2` leaving the door open to add analogous support for protocols besides HTTP later on.
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This adds a new field `local_rate_limit` to `ServerPolicy`, containing three optional rate-limiters: total, identity, overrides (this one is really a vector of limiters, one per configured override). I tried putting that under `Protocol` instead, but the `PartialEq` requirement made it very hard to follow. `Server` OTOH doesn't really require that trait, so I was able to remove it and accommodate the limiters. I made sure to avoid pulling the dashmap dependency in `governor`; I haven't checked yet the necessity of the "jitter" and "quanta" features. This temporarily overrides linkerd2-proxy-api dependency to pick changes from linkerd/linkerd2-proxy-api#388
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This adds a new field `local_rate_limit` to `ServerPolicy`, containing three optional rate-limiters: total, identity, overrides (this one is really a vector of limiters, one per configured override). I tried putting that under `Protocol` instead, but the `PartialEq` requirement made it very hard to follow. `Server` OTOH doesn't really require that trait, so I was able to remove it and accommodate the limiters. I made sure to avoid pulling the dashmap dependency in `governor`; I haven't checked yet the necessity of the "jitter" and "quanta" features. This temporarily overrides linkerd2-proxy-api dependency to pick changes from linkerd/linkerd2-proxy-api#388
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This adds a new field `local_rate_limit` to `ServerPolicy`, containing three optional rate-limiters: total, identity, overrides (this one is really a vector of limiters, one per configured override). I tried putting that under `Protocol` instead, but the `PartialEq` requirement made it very hard to follow. `Server` OTOH doesn't really require that trait, so I was able to remove it and accommodate the limiters. I made sure to avoid pulling the dashmap dependency in `governor`; I haven't checked yet the necessity of the "jitter" and "quanta" features. This temporarily overrides linkerd2-proxy-api dependency to pick changes from linkerd/linkerd2-proxy-api#388
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This adds a new field `local_rate_limit` to `ServerPolicy`, containing three optional rate-limiters: total, identity, overrides (this one is really a vector of limiters, one per configured override). I tried putting that under `Protocol` instead, but the `PartialEq` requirement made it very hard to follow. `Server` OTOH doesn't really require that trait, so I was able to remove it and accommodate the limiters. I made sure to avoid pulling the dashmap dependency in `governor`; I haven't checked yet the necessity of the "jitter" and "quanta" features. This temporarily overrides linkerd2-proxy-api dependency to pick changes from linkerd/linkerd2-proxy-api#388
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This adds the local_rate_limit module to the server-policy crate, that `ServerPolicy` uses for its new `local_rate_limit` field, containing three optional rate-limiters: total, identity, overrides (this one is really a vector of limiters, one per configured override). I tried putting that under `Protocol` instead, but the `PartialEq` requirement made it very hard to follow. `Server` OTOH doesn't really require that trait, so I was able to remove it and accommodate the limiters. I made sure to avoid pulling the dashmap dependency in `governor`; I haven't checked yet the necessity of the "jitter" and "quanta" features. This temporarily overrides linkerd2-proxy-api dependency to pick changes from linkerd/linkerd2-proxy-api#388
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This adds the local_rate_limit module to the server-policy crate, that `ServerPolicy` uses for its new `local_rate_limit` field, containing three optional rate-limiters: total, identity, overrides (this one is really a vector of limiters, one per configured override). I tried putting that under `Protocol` instead, but the `PartialEq` requirement made it very hard to follow. `Server` OTOH doesn't really require that trait, so I was able to remove it and accommodate the limiters. I made sure to avoid pulling the dashmap dependency in `governor`; I haven't checked yet the necessity of the "jitter" and "quanta" features. This temporarily overrides linkerd2-proxy-api dependency to pick changes from linkerd/linkerd2-proxy-api#388
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This adds the local_rate_limit module to the server-policy crate, that `ServerPolicy` uses for its new `local_rate_limit` field, containing three optional rate-limiters: total, identity, overrides (this one is really a vector of limiters, one per configured override). I tried putting that under `Protocol` instead, but the `PartialEq` requirement made it very hard to follow. `Server` OTOH doesn't really require that trait, so I was able to remove it and accommodate the limiters. I made sure to avoid pulling the dashmap dependency in `governor`; I haven't checked yet the necessity of the "jitter" and "quanta" features. This temporarily overrides linkerd2-proxy-api dependency to pick changes from linkerd/linkerd2-proxy-api#388
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My last commits adds a metadata field, to be able to correlate against the resource producing the RL config. |
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This adds an entry for
HttpLocalRateLimitunderProxyProtocol.Detect,ProxyProtocol.Http1andProxyProtocol.Http2leaving the door open to add analogous support for protocols besides HTTP later on.Also note there are lot of smaller unrelated changes stemming from using protoc v3.20.3 (as per the dev:v43 container) instead of v3.12.4 which was used apparently by mistake in c9914c2