112 lines
2.9 KiB
Go
112 lines
2.9 KiB
Go
package cwapi
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net/http"
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"time"
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"github.com/crowdsecurity/crowdsec/pkg/types"
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log "github.com/sirupsen/logrus"
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)
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func (ctx *ApiCtx) AppendSignal(sig types.SignalOccurence) error {
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ctx.toPush = append(ctx.toPush, types.Event{Overflow: sig})
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log.Debugf("api append signal: adding new signal (cache size : %d): %+v", len(ctx.toPush), sig)
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return nil
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}
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func (ctx *ApiCtx) pushSignals() error {
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if len(ctx.toPush) == 0 {
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return nil
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}
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req, err := ctx.Http.New().Put(ctx.PushPath).BodyJSON(&ctx.toPush).Request()
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if err != nil {
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return fmt.Errorf("api push signal: HTTP request creation failed: %s", err)
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}
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log.Debugf("api push: URL: '%s'", req.URL)
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httpClient := http.Client{Timeout: 20 * time.Second}
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resp, err := httpClient.Do(req)
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if err != nil {
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return fmt.Errorf("api push signal: API call failed : %s", err)
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}
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defer resp.Body.Close()
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body, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return fmt.Errorf("failed to read body : %s", err)
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}
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log.Debugf("api push signal: HTTP Code: %+v | Body: %s \n", resp.StatusCode, string(body))
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if resp.StatusCode != 200 {
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if resp.StatusCode == 401 && !ctx.tokenExpired {
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log.Printf("api push signal: expired token, resigning to API")
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ctx.tokenExpired = true
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err := ctx.Signin()
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if err != nil {
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return err
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}
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log.Printf("api push signal: token renewed. Pushing signals")
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err = ctx.pushSignals()
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if err != nil {
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return fmt.Errorf("api push signal: unable to renew api session token: %s", err.Error())
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}
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} else {
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return fmt.Errorf("api push signal: return bad HTTP code (%d): %s", resp.StatusCode, string(body))
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}
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}
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if len(ctx.toPush) > 0 {
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log.Infof("api push signal: pushed %d signals successfully", len(ctx.toPush))
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}
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ctx.toPush = make([]types.Event, 0)
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ctx.tokenExpired = false
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return nil
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}
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func (ctx *ApiCtx) Flush() error {
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/*flag can be activated to dump to local file*/
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if ctx.DebugDump {
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log.Warningf("api flush: dumping api cache to ./api-dump.json")
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x, err := json.MarshalIndent(ctx.toPush, "", " ")
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if err != nil {
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return fmt.Errorf("api flush: failed to marshal data: %s", err)
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}
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if err := ioutil.WriteFile("./api-dump.json", x, 0755); err != nil {
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return fmt.Errorf("api flush: failed to write marshaled data : %s", err)
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}
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}
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//pretend we did stuff
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if ctx.Muted {
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return nil
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}
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if err := ctx.pushSignals(); err != nil {
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log.Errorf("api flush: fail to push signals: %s", err)
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}
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return nil
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}
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//This one is called on a regular basis (decided by init) and push stacked events to API
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func (ctx *ApiCtx) pushLoop() error {
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log.Debugf("api push loop: running with a ticker every 2 minutes")
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ticker := time.NewTicker(2 * time.Minute)
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for {
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select {
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case <-ticker.C: //push data.
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if len(ctx.toPush) == 0 {
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log.Debugf("api push loop: nothing to push")
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continue
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}
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err := ctx.Flush()
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if err != nil {
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log.Errorf("api push loop: %s", err.Error())
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}
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}
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}
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}
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