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https://github.com/fnproject/fn.git
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7677aad450
*) I/O protocol parse issues should shutdown the container as the container goes to inconsistent state between calls. (eg. next call may receive previous calls left overs.) *) Move ghost read/write code into io_utils in common. *) Clean unused error from docker Wait() *) We can catch one case in JSON, if there's remaining unparsed data in decoder buffer, we can shut the container *) stdout/stderr when container is not handling a request are now blocked if freezer is also enabled. *) if a fatal err is set for slot, we do not requeue it and proceed to shutdown *) added a test function for a few cases with freezer strict behavior
74 lines
1.8 KiB
Go
74 lines
1.8 KiB
Go
package agent
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import (
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"errors"
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"math"
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"os"
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"strconv"
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"time"
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)
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type AgentConfig struct {
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MinDockerVersion string `json:"min_docker_version"`
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FreezeIdleMsecs time.Duration `json:"freeze_idle_msecs"`
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EjectIdleMsecs time.Duration `json:"eject_idle_msecs"`
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MaxResponseSize uint64 `json:"max_response_size"`
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}
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var MaxDisabledMsecs = time.Duration(math.MaxInt64)
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func NewAgentConfig() (*AgentConfig, error) {
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var err error
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cfg := &AgentConfig{
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MinDockerVersion: "17.06.0-ce",
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}
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cfg.FreezeIdleMsecs, err = getEnvMsecs("FN_FREEZE_IDLE_MSECS", 50*time.Millisecond)
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if err != nil {
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return cfg, errors.New("error initializing freeze idle delay")
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}
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cfg.EjectIdleMsecs, err = getEnvMsecs("FN_EJECT_IDLE_MSECS", 1000*time.Millisecond)
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if err != nil {
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return cfg, errors.New("error initializing eject idle delay")
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}
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if cfg.EjectIdleMsecs == time.Duration(0) {
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return cfg, errors.New("error eject idle delay cannot be zero")
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}
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if size := os.Getenv("FN_MAX_RESPONSE_SIZE"); size != "" {
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cfg.MaxResponseSize, err = strconv.ParseUint(size, 10, 64)
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if err != nil {
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return cfg, errors.New("error initializing response buffer size")
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}
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if cfg.MaxResponseSize < 0 {
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return cfg, errors.New("error invalid response buffer size")
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}
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}
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return cfg, nil
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}
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func getEnvMsecs(name string, defaultVal time.Duration) (time.Duration, error) {
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delay := defaultVal
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if dur := os.Getenv(name); dur != "" {
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durInt, err := strconv.ParseInt(dur, 10, 64)
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if err != nil {
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return defaultVal, err
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}
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// disable if negative or set to msecs specified.
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if durInt < 0 || time.Duration(durInt) >= MaxDisabledMsecs/time.Millisecond {
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delay = MaxDisabledMsecs
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} else {
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delay = time.Duration(durInt) * time.Millisecond
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}
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}
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return delay, nil
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}
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