62 lines
1.3 KiB
Go
62 lines
1.3 KiB
Go
package fingerprint
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import (
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"fmt"
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log "github.com/hashicorp/go-hclog"
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"github.com/hashicorp/nomad/nomad/structs"
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"github.com/shirou/gopsutil/v3/mem"
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)
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const bytesInMB int64 = 1024 * 1024
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// MemoryFingerprint is used to fingerprint the available memory on the node
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type MemoryFingerprint struct {
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StaticFingerprinter
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logger log.Logger
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}
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// NewMemoryFingerprint is used to create a Memory fingerprint
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func NewMemoryFingerprint(logger log.Logger) Fingerprint {
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f := &MemoryFingerprint{
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logger: logger.Named("memory"),
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}
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return f
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}
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func (f *MemoryFingerprint) Fingerprint(req *FingerprintRequest, resp *FingerprintResponse) error {
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var totalMemory int64
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cfg := req.Config
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if cfg.MemoryMB != 0 {
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totalMemory = int64(cfg.MemoryMB) * bytesInMB
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} else {
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memInfo, err := mem.VirtualMemory()
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if err != nil {
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f.logger.Warn("error reading memory information", "error", err)
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return err
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}
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if memInfo.Total > 0 {
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totalMemory = int64(memInfo.Total)
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}
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}
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if totalMemory > 0 {
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resp.AddAttribute("memory.totalbytes", fmt.Sprintf("%d", totalMemory))
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memoryMB := totalMemory / bytesInMB
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// COMPAT(0.10): Unused since 0.9.
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resp.Resources = &structs.Resources{
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MemoryMB: int(memoryMB),
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}
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resp.NodeResources = &structs.NodeResources{
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Memory: structs.NodeMemoryResources{
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MemoryMB: memoryMB,
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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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