mirror of
https://github.com/hanzoai/gateway.git
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zeekayandHanzo Dev
53350699b6
Every import in this module now resolves to github.com/hanzoai/gateway/v2.
The 34 github.com/krakend/* + github.com/luraproject/lura modules that
supplied the engine and its components are vendored under internal/ and
their 91 packages rewritten onto our own path.
Why fold rather than mirror into 34 hanzoai/* repos:
- It removes the exposure outright. 34 rows leave 34 rows of go.sum to
reason about; zero modules leave nothing. `go list -m all` and go.sum
now contain no krakend/lura entry at all.
- Cross-references cannot go wrong. 28 of the 34 import lura (97 files
inside lura self-reference it). Mirroring means rewriting every one of
those to our lura, and a single miss silently links a SECOND copy of
lura into the binary. With one module that is structurally impossible.
- It creates no duplicates. These are lura-coupled gateway glue with no
consumer outside this binary; publishing 34 repos would be 34 new
things to maintain for zero second caller. internal/ makes that
guarantee mechanical — Go forbids importing it from outside this
module, so none of it can become a competing public package. Verified
no repo outside gateway imports any hanzoai/gateway/v2 subpackage.
Layout mirrors provenance so an upstream re-sync stays a diff:
luraproject/lura/v2 -> internal/lura (the engine, 20 pkgs)
krakend/krakend-<x> -> internal/plugin/<x> (28 components)
krakend/<x> -> internal/pkg/<x> (6 standalone libs)
This commit is PURELY MECHANICAL: 196 of the 197 vendored files are
byte-identical to their upstream original once the import rewrite is
applied. The single exception is bloomfilter's subpackage, which upstream
names `krakend` — the one package name that could not survive as-is; it
becomes internal/pkg/bloomfilter/register. Hand edits land separately in
the next commit so they are readable on their own.
Per `go mod vendor` semantics, dependencies' _test.go files are not
vendored. They test upstream code at a pinned version that we do not
modify, several cannot run at all from a module distribution (they need
TLS certs and compiled .so plugins upstream generates but never ships),
and one is a 100k-request stress test that exhausts the ephemeral port
range and fails every package running beside it. Fold integrity is proven
by the byte-diff above instead, which is the stronger check.
Preserved deliberately — each of these is behaviour, not branding:
- the `github.com/devopsfaith/krakend*` extra_config namespace strings
(35 of them). These are config-surface keys, not import paths;
renaming one silently stops that component finding its config. The
jose validator namespace backs `auth/validator` on 212 endpoints.
- core.KrakendVersion / KrakendUserAgent / the X-KRAKEND consts, whose
VALUES rebrand.go overwrites — that seam is unchanged.
- the KRAKEND_ koanf env prefix (a hardcoded upstream const).
- every vendored module's LICENSE (34 files, Apache-2.0/MIT).
The Makefile/CI -X paths move with the engine. An -X naming a symbol that
does not exist is silently ignored by the linker, so a stale path here
would have shipped an "undefined" version in the backend User-Agent and
X-Api-Version with a perfectly green build. Verified live:
`gateway version` reports 2.13.0, not undefined.
Verification (GOWORK=off CGO_ENABLED=0, both tag modes):
go build ./... OK go build -tags legacy ./... OK
go vet ./... clean go vet -tags legacy ./... clean
go test ./... 6/6 ok go test -tags legacy 5/5 ok
tests/ integration harness 47 fixtures pass
gateway check -c configs/{hanzo,lux}/gateway.json -> Syntax OK!
go list -m all | grep -iE 'krakend|lura' -> empty
go mod verify -> all modules verified
Co-authored-by: Hanzo Dev <[email protected]>
97 lines
2.5 KiB
Go
97 lines
2.5 KiB
Go
// Package httpcache introduces an in-memory-cached http client into the KrakenD stack
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package httpcache
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import (
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"context"
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"encoding/json"
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"net/http"
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"github.com/hanzoai/gateway/v2/internal/pkg/httpcache"
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"github.com/hanzoai/gateway/v2/internal/pkg/lru"
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"github.com/hanzoai/gateway/v2/internal/lura/config"
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"github.com/hanzoai/gateway/v2/internal/lura/transport/http/client"
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)
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type Cache interface {
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// Get returns the []byte representation of a cached response and a bool
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// set to true if the value isn't empty
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Get(key string) (responseBytes []byte, ok bool)
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// Set stores the []byte representation of a response against a key
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Set(key string, responseBytes []byte)
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// Delete removes the value associated with the key
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Delete(key string)
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}
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// Namespace is the key to use to store and access the custom config data
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const Namespace = "github.com/devopsfaith/krakend-httpcache"
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// NewHTTPClient creates a HTTPClientFactory using an in-memory-cached http client
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func NewHTTPClient(cfg *config.Backend, nextF client.HTTPClientFactory) client.HTTPClientFactory {
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raw, ok := cfg.ExtraConfig[Namespace]
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if !ok {
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return nextF
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}
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b, err := json.Marshal(raw)
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if err != nil {
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return defaultClient(nextF)
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}
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var opts options
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if err := json.Unmarshal(b, &opts); err != nil {
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return defaultClient(nextF)
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}
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return getCachedClient(nextF, selectCache(opts))
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}
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func defaultClient(nextF client.HTTPClientFactory) client.HTTPClientFactory {
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return getCachedClient(nextF, httpcache.NewMemoryCache())
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}
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func getCachedClient(nextF client.HTTPClientFactory, cache Cache) client.HTTPClientFactory {
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return func(ctx context.Context) *http.Client {
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httpClient := nextF(ctx)
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return &http.Client{
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Transport: &httpcache.Transport{
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Transport: httpClient.Transport,
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Cache: cache,
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},
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CheckRedirect: httpClient.CheckRedirect,
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Jar: httpClient.Jar,
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Timeout: httpClient.Timeout,
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}
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}
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}
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func selectCache(opts options) Cache {
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if opts.MaxSize == 0 || opts.MaxItems == 0 {
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if opts.Shared {
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return globalCache
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}
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return httpcache.NewMemoryCache()
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}
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if !opts.Shared {
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cache, _ := lru.NewLruCache(opts.MaxSize, opts.MaxItems)
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return cache
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}
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if globalLruCache == nil {
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globalLruCache, _ = lru.NewLruCache(opts.MaxSize, opts.MaxItems)
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}
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return globalLruCache
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}
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var (
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globalLruCache Cache
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globalCache = httpcache.NewMemoryCache()
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)
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type options struct {
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Shared bool `json:"shared"`
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MaxSize uint64 `json:"max_size"`
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MaxItems uint64 `json:"max_items"`
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}
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