Markus Pesch
500d1a5823
Changes: - Split temperatures from log file into blocks. Every block has a size of 500 entries. Every block would be send to the remote host
79 lines
1.9 KiB
Go
79 lines
1.9 KiB
Go
package httpcall
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"math"
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"net/http"
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"git.cryptic.systems/fh-trier/go-flucky/pkg/config"
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stypes "git.cryptic.systems/fh-trier/go-flucky-server/pkg/types"
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)
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// SendTemperatures remote servers
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func SendTemperatures(temperatures []*stypes.Temperature, configDir string) error {
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cnf, err := config.Read(configDir)
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if err != nil {
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return err
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}
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// split temperatures in blocks to reduce server data size in single request
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blockSize := 500
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temperatureBlocks := make(map[int][]*stypes.Temperature)
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length := int(math.Ceil(float64(len(temperatures)) / float64(blockSize)))
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for i := 0; i < length; i++ {
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start := i * blockSize
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end := (i + 1) * blockSize
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if end > len(temperatures) {
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end = len(temperatures)
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}
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temperatureBlocks[i] = temperatures[start:end]
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}
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for _, remote := range cnf.Remotes {
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if remote.Enabled {
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for _, temperatureBlock := range temperatureBlocks {
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temperaturesAsBytes, err := json.Marshal(temperatureBlock)
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if err != nil {
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return fmt.Errorf("Can not marshal temperatures to JSON: %v", err)
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}
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temperaturesAsReader := bytes.NewReader(temperaturesAsBytes)
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requestURL := fmt.Sprintf("%s%s", remote.Address, "/temperatures")
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req, err := http.NewRequest("POST", requestURL, temperaturesAsReader)
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if err != nil {
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return err
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}
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client := http.Client{}
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resp, err := client.Do(req)
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if err != nil {
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return err
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}
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defer resp.Body.Close()
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if resp.StatusCode < 200 || resp.StatusCode > 299 {
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b, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return fmt.Errorf("Invalid HTTP-Statuscode - expected 200, got %d - can not read response body: %v", resp.StatusCode, err)
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}
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return fmt.Errorf("Invalid HTTP-Statuscode - expected 200, got %d: %v", resp.StatusCode, string(b))
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}
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}
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}
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}
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return nil
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}
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