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Initial journald log provider attempt

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**What**
- journald log provider using exec to journalctl
```
journalctl -t <namespace>:<name>  --output=json --since=<timestamp> <--follow> --output-fields=SYSLOG_IDENTIFIER,MESSAGE,_PID,_SOURCE_REALTIME_TIMESTAMP
```
- This can be tested manually using `faas-cli logs` as normal, e.g.
  `faas-cli logs nodeinfo` should tail the last 5 mins of logs.
- Very basic tests ensuring that the `journalctl` comamand is correctly
  construction and that the json log entrys are parsed correctly.
- Add simple e2e test to grep the function logs

Signed-off-by: Lucas Roesler <roesler.lucas@gmail.com>
This commit is contained in:
Lucas Roesler
2020-03-01 22:09:38 +01:00
committed by Alex Ellis
parent 667d74aaf7
commit 22882e2643
14 changed files with 497 additions and 25 deletions
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3
pkg/provider/handlers/scale.go
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@ -12,6 +12,7 @@ import (
"github.com/containerd/containerd/namespaces"
gocni "github.com/containerd/go-cni"
"github.com/openfaas/faas-provider/types"
faasd "github.com/openfaas/faasd/pkg"
)
func MakeReplicaUpdateHandler(client *containerd.Client, cni gocni.CNI) func(w http.ResponseWriter, r *http.Request) {
@ -47,7 +48,7 @@ func MakeReplicaUpdateHandler(client *containerd.Client, cni gocni.CNI) func(w h
return
}
ctx := namespaces.WithNamespace(context.Background(), FunctionNamespace)
ctx := namespaces.WithNamespace(context.Background(), faasd.FunctionNamespace)
ctr, ctrErr := client.LoadContainer(ctx, name)
if ctrErr != nil {