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| Original file line number | Diff line number | Diff line change |
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| @@ -1,5 +1,7 @@ | ||
| .DS_Store | ||
| .idea | ||
| .vscode | ||
| __debug_bin* | ||
| bin/* | ||
| kind-logs-* | ||
| cover.out | ||
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||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,21 +1,94 @@ | ||
| package scope | ||
|
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| import ( | ||
| "fmt" | ||
| "net/http" | ||
| "sync" | ||
|
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| "github.com/bxcodec/gotcha" | ||
| "github.com/bxcodec/gotcha/cache" | ||
| "github.com/bxcodec/httpcache" | ||
| "github.com/bxcodec/httpcache/cache/inmem" | ||
| "github.com/linode/cluster-api-provider-linode/util" | ||
| "github.com/linode/linodego" | ||
| "golang.org/x/oauth2" | ||
| ) | ||
|
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| var ( | ||
| initClient sync.Once | ||
| linodeClient linodego.Client | ||
| ) | ||
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| func createLinodeClient(apiKey string) *linodego.Client { | ||
| tokenSource := oauth2.StaticTokenSource(&oauth2.Token{AccessToken: apiKey}) | ||
| initClient.Do(func() { | ||
| //nolint:forcetypeassert // Always OK. | ||
| baseTrans := http.DefaultTransport.(*http.Transport).Clone() | ||
| baseTrans.MaxIdleConns = util.DefaultLinodeAPIMaxIdleConns | ||
| // Otherwise we use just a few connections. | ||
| baseTrans.MaxConnsPerHost = baseTrans.MaxIdleConns | ||
| baseTrans.MaxIdleConnsPerHost = baseTrans.MaxIdleConns | ||
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| oauth2Client := &http.Client{ | ||
| Transport: &oauth2.Transport{ | ||
| Source: tokenSource, | ||
| }, | ||
| } | ||
| linodeClient := linodego.NewClient(oauth2Client) | ||
| oauthTrans := &oauth2.Transport{ | ||
| Source: oauth2.StaticTokenSource(&oauth2.Token{AccessToken: apiKey}), | ||
| Base: baseTrans, | ||
| } | ||
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| oauth2Client := &http.Client{ | ||
| Timeout: util.DefaultLinodeAPITimeout, | ||
| Transport: oauthTrans, | ||
| } | ||
|
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| cacheStore := gotcha.New(&cache.Option{ | ||
| AlgorithmType: cache.LRUAlgorithm, | ||
| ExpiryTime: util.DefaultLinodeAPICacheExpiration, | ||
| MaxSizeItem: util.DefaultLinodeAPICacheMaxSizeItem, | ||
| MaxMemory: util.DefaultLinodeAPICacheMaxMemory, | ||
| }) | ||
| cachedTrans := httpcache.NewCacheHandlerRoundtrip(&maxAgeFixRoundTripper{ | ||
| oauthTrans, | ||
| }, false, inmem.NewCache(cacheStore)) | ||
|
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| oauth2Client.Transport = &reqURIFixRoundTripper{ | ||
| plain: oauthTrans, | ||
| cached: cachedTrans, | ||
| } | ||
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| linodeClient = linodego.NewClient(oauth2Client) | ||
| }) | ||
|
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| return &linodeClient | ||
| } | ||
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| type maxAgeFixRoundTripper struct { | ||
| http.RoundTripper | ||
| } | ||
|
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| func (r *maxAgeFixRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) { | ||
| resp, err := r.RoundTripper.RoundTrip(req) | ||
| if err == nil && req.Method == http.MethodGet { | ||
| // Workaround, because Linode API sends max-age=0 all the time. | ||
| resp.Header.Set("Cache-Control", util.DefaultLinodeAPICacheControlOverride) | ||
| } | ||
|
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| return resp, err | ||
| } | ||
|
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| type reqURIFixRoundTripper struct { | ||
| plain http.RoundTripper | ||
| cached http.RoundTripper | ||
| } | ||
|
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| func (r *reqURIFixRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) { | ||
| if req.Method != http.MethodGet { | ||
| return r.plain.RoundTrip(req) | ||
| } | ||
|
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| // Workaround because Linodego doesn't set it. | ||
| req.RequestURI = req.URL.Path | ||
|
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| if filter := req.Header.Get("X-Filter"); filter != "" { | ||
| req.RequestURI = fmt.Sprintf("%s?filter=%s", req.RequestURI, filter) | ||
| } | ||
|
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| return r.cached.RoundTrip(req) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| /* | ||
| Copyright 2023 Akamai Technologies, Inc. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
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| package util | ||
|
|
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| import ( | ||
| "time" | ||
|
|
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| "github.com/bxcodec/gotcha/cache" | ||
| ) | ||
|
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| const ( | ||
| // DefaultLinodeAPITimeout is the default timeout for Linode API calls. | ||
| DefaultLinodeAPITimeout = 10 * time.Second | ||
| // DefaultLinodeAPIMaxIdleConns is the default max idle connections for Linode API calls. | ||
| DefaultLinodeAPIMaxIdleConns = 100 | ||
| // DefaultLinodeAPICacheControlOverride is the default cache control override for Linode API calls. | ||
| DefaultLinodeAPICacheControlOverride = "max-age=60" | ||
| // DefaultLinodeAPICacheExpiration is the default cache expiration for Linode API calls. | ||
| DefaultLinodeAPICacheExpiration = 5 * time.Second | ||
| // DefaultLinodeAPICacheMaxSizeItem is the default cache max size item for Linode API calls. | ||
| DefaultLinodeAPICacheMaxSizeItem = 500 | ||
| // DefaultLinodeAPICacheMaxMemory is the default cache max memory for Linode API calls. | ||
| DefaultLinodeAPICacheMaxMemory = 1 * cache.MB | ||
| ) |