45 lines
843 B
Go
45 lines
843 B
Go
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package wasm
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import (
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"fmt"
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"io/ioutil"
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"net/http"
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"git.kirsle.net/apps/doodle/pkg/log"
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"git.kirsle.net/apps/doodle/pkg/shmem"
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)
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// HTTPGet fetches a path via ajax request.
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func HTTPGet(filename string) ([]byte, error) {
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// Already cached?
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jsonData, ok := shmem.AjaxCache[filename]
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if ok {
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return jsonData, nil
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}
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// Fetch the URI.
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resp, err := http.Get(filename)
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if err != nil {
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log.Error("http error: %s", err)
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return nil, err
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}
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defer resp.Body.Close()
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// Error?
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if !(resp.StatusCode >= 200 && resp.StatusCode < 300) {
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return nil, fmt.Errorf("failed to load URI %s: HTTP %d response",
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filename,
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resp.StatusCode,
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)
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}
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// Parse and store the response in cache.
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jsonData, err = ioutil.ReadAll(resp.Body)
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if err != nil {
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return nil, err
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}
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shmem.AjaxCache[filename] = jsonData
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return jsonData, nil
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}
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