mirror of https://github.com/k3d-io/k3d
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/* |
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Copyright © 2019 Thorsten Klein <iwilltry42@gmail.com> |
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Permission is hereby granted, free of charge, to any person obtaining a copy |
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of this software and associated documentation files (the "Software"), to deal |
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in the Software without restriction, including without limitation the rights |
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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copies of the Software, and to permit persons to whom the Software is |
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furnished to do so, subject to the following conditions: |
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The above copyright notice and this permission notice shall be included in |
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all copies or substantial portions of the Software. |
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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THE SOFTWARE. |
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*/ |
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package cluster |
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import ( |
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"fmt" |
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"github.com/rancher/k3d/pkg/types" |
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) |
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// CheckClusterName ensures that a cluster name is also a valid host name according to RFC 1123.
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// We further restrict the length of the cluster name to maximum 'clusterNameMaxSize'
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// so that we can construct the host names based on the cluster name, and still stay
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// within the 64 characters limit.
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func CheckClusterName(name string) error { |
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if err := ValidateHostname(name); err != nil { |
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return fmt.Errorf("Invalid cluster name. %+v", ValidateHostname(name)) |
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} |
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if len(name) > types.DefaultClusterNameMaxLength { |
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return fmt.Errorf("Cluster name must be <= %d characters, but has %d", types.DefaultClusterNameMaxLength, len(name)) |
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} |
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return nil |
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} |
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// ValidateHostname ensures that a cluster name is also a valid host name according to RFC 1123.
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func ValidateHostname(name string) error { |
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if len(name) == 0 { |
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return fmt.Errorf("No name provided") |
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} |
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if name[0] == '-' || name[len(name)-1] == '-' { |
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return fmt.Errorf("Hostname '%s' must not start or end with '-' (dash)", name) |
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} |
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for _, c := range name { |
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switch { |
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case '0' <= c && c <= '9': |
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case 'a' <= c && c <= 'z': |
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case 'A' <= c && c <= 'Z': |
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case c == '-': |
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break |
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default: |
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return fmt.Errorf("Hostname '%s' contains characters other than 'Aa-Zz', '0-9' or '-'", name) |
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} |
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} |
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return nil |
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} |
@ -0,0 +1,39 @@ |
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/* |
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Copyright © 2019 Thorsten Klein <iwilltry42@gmail.com> |
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|
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Permission is hereby granted, free of charge, to any person obtaining a copy |
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|
of this software and associated documentation files (the "Software"), to deal |
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|
in the Software without restriction, including without limitation the rights |
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|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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|
copies of the Software, and to permit persons to whom the Software is |
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|
furnished to do so, subject to the following conditions: |
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|
|
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The above copyright notice and this permission notice shall be included in |
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|
all copies or substantial portions of the Software. |
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|
|
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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THE SOFTWARE. |
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*/ |
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package docker |
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import ( |
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"fmt" |
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"github.com/docker/docker/api/types/filters" |
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k3d "github.com/rancher/k3d/pkg/types" |
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) |
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// GetDefaultObjectLabelsFilter returns docker type filters created from k3d labels
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func GetDefaultObjectLabelsFilter(clusterName string) filters.Args { |
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filters := filters.NewArgs() |
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for key, value := range k3d.DefaultObjectLabels { |
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filters.Add("label", fmt.Sprintf("%s=%s", key, value)) |
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} |
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filters.Add("label", fmt.Sprintf("cluster=%s", clusterName)) |
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return filters |
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} |
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