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docker: render errors with %v since they can be nil

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This commit is contained in:
Frank Schroeder 2017-10-31 09:19:20 +01:00
parent fb464a8c0d
commit ed1b1b54cd
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GPG key ID: 4D65C6EAEC87DECD
1 changed files with 4 additions and 4 deletions
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8
agent/checks/docker.go
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@ -141,7 +141,7 @@ func (c *DockerClient) CreateExec(containerID string, cmd []string) (string, err
b, code, err := c.call("POST", uri, data)
switch {
case err != nil:
return "", fmt.Errorf("create exec failed for container %s: %s", containerID, err)
return "", fmt.Errorf("create exec failed for container %s: %v", containerID, err)
case code == 201:
var resp struct{ Id string }
if err = json.NewDecoder(bytes.NewReader(b.Bytes())).Decode(&resp); err != nil {
@ -169,7 +169,7 @@ func (c *DockerClient) StartExec(containerID, execID string) (*circbuf.Buffer, e
// todo(fs): that the docker agent closes this prematurely but I don't understand why.
// todo(fs): the code below ignores this error.
case err != nil && !strings.Contains(err.Error(), "connection reset by peer"):
return nil, fmt.Errorf("start exec failed for container %s: %s", containerID, err)
return nil, fmt.Errorf("start exec failed for container %s: %v", containerID, err)
case code == 200:
return b, nil
case code == 404:
@ -177,7 +177,7 @@ func (c *DockerClient) StartExec(containerID, execID string) (*circbuf.Buffer, e
case code == 409:
return nil, fmt.Errorf("start exec failed since container %s is paused or stopped", containerID)
default:
return nil, fmt.Errorf("start exec failed for container %s with status %d: body: %s err: %s", containerID, code, b, err)
return nil, fmt.Errorf("start exec failed for container %s with status %d: body: %s err: %v", containerID, code, b, err)
}
}
@ -190,7 +190,7 @@ func (c *DockerClient) InspectExec(containerID, execID string) (int, error) {
case code == 200:
var resp struct{ ExitCode int }
if err := json.NewDecoder(bytes.NewReader(b.Bytes())).Decode(&resp); err != nil {
return 0, fmt.Errorf("inspect exec response for container %s cannot be parsed: %s", containerID, err)
return 0, fmt.Errorf("inspect exec response for container %s cannot be parsed: %v", containerID, err)
}
return resp.ExitCode, nil
case code == 404: