| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package pinger |
| 4 | |
| 5 | import ( |
| 6 | "context" |
| 7 | "errors" |
| 8 | "fmt" |
| 9 | |
| 10 | "github.com/netdata/netdata/go/plugins/logger" |
| 11 | ) |
| 12 | |
| 13 | type Client interface { |
| 14 | Probe(ctx context.Context, host string) (Sample, error) |
| 15 | ProbeAndTrack(ctx context.Context, host string) (Sample, error) |
| 16 | } |
| 17 | |
| 18 | type client struct { |
| 19 | log *logger.Logger |
| 20 | cfg Config |
| 21 | runner probeRunner |
| 22 | state *stateStore |
| 23 | } |
| 24 | |
| 25 | func New(cfg Config, log *logger.Logger) (Client, error) { |
| 26 | return newClient(cfg, log, &defaultRunner{log: ensureLogger(log)}) |
| 27 | } |
| 28 | |
| 29 | func newClient(cfg Config, log *logger.Logger, runner probeRunner) (*client, error) { |
| 30 | if runner == nil { |
| 31 | return nil, errors.New("nil probe runner") |
| 32 | } |
| 33 | |
| 34 | cfg, err := normalizeConfig(cfg) |
| 35 | if err != nil { |
| 36 | return nil, err |
| 37 | } |
| 38 | |
| 39 | return &client{ |
| 40 | log: ensureLogger(log), |
| 41 | cfg: cfg, |
| 42 | runner: runner, |
| 43 | state: newStateStore(), |
| 44 | }, nil |
| 45 | } |
| 46 | |
| 47 | func (c *client) Probe(ctx context.Context, host string) (Sample, error) { |
| 48 | return c.probe(ctx, host, false) |
| 49 | } |
| 50 | |
| 51 | func (c *client) ProbeAndTrack(ctx context.Context, host string) (Sample, error) { |
| 52 | return c.probe(ctx, host, true) |
| 53 | } |
| 54 | |
| 55 | func (c *client) probe(ctx context.Context, host string, track bool) (Sample, error) { |
| 56 | if ctx == nil { |
| 57 | ctx = context.Background() |
| 58 | } |
| 59 | |
| 60 | stats, err := c.runner.probe(ctx, host, c.cfg.Probe) |
| 61 | if err != nil { |
| 62 | var probeErr *ProbeError |
| 63 | if errors.As(err, &probeErr) { |
| 64 | return Sample{}, err |
| 65 | } |
| 66 | return Sample{}, &ProbeError{Host: host, Stage: "probe", Err: err} |
| 67 | } |
| 68 | if stats == nil { |
| 69 | return Sample{}, &ProbeError{Host: host, Stage: "probe", Err: fmt.Errorf("nil probe statistics")} |
| 70 | } |
| 71 | |
| 72 | return deriveSample(host, stats, track, c.state, c.cfg.Analysis), nil |
| 73 | } |
| 74 | |
| 75 | func ensureLogger(log *logger.Logger) *logger.Logger { |
| 76 | if log != nil { |
| 77 | return log |
| 78 | } |
| 79 | return logger.New() |
| 80 | } |