mirror of https://github.com/fluxcd/flux2.git
Introduce a printer interface for flux resource
If implemented, there will a common interface to print flux resource. We are adding new way to print resource information e.g. diff of objects. Signed-off-by: Soule BA <soule@weave.works>pull/2512/head
Soule BA
3 years ago
parent
307309504b
commit
7359e63960
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/*
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Copyright 2022 The Flux authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package printers
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import (
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"fmt"
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"io"
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"github.com/homeport/dyff/pkg/dyff"
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)
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// DyffPrinter is a printer that prints dyff reports.
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type DyffPrinter struct {
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OmitHeader bool
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}
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// NewDyffPrinter returns a new DyffPrinter.
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func NewDyffPrinter() *DyffPrinter {
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return &DyffPrinter{
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OmitHeader: true,
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}
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}
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// Print prints the given args to the given writer.
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func (p *DyffPrinter) Print(w io.Writer, args ...interface{}) error {
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for _, arg := range args {
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switch arg := arg.(type) {
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case dyff.Report:
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reportWriter := &dyff.HumanReport{
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Report: arg,
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OmitHeader: p.OmitHeader,
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}
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if err := reportWriter.WriteReport(w); err != nil {
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return fmt.Errorf("failed to print report: %w", err)
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}
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default:
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return fmt.Errorf("unsupported type %T", arg)
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}
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}
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return nil
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}
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@ -0,0 +1,33 @@
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/*
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Copyright 2022 The Flux authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package printers
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import "io"
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// Printer is an interface for printing Flux cmd outputs.
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type Printer interface {
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// Print prints the given args to the given writer.
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Print(io.Writer, ...interface{}) error
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}
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// PrinterFunc is a function that can print args to a writer.
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type PrinterFunc func(w io.Writer, args ...interface{}) error
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// Print implements Printer
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func (fn PrinterFunc) Print(w io.Writer, args ...interface{}) error {
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return fn(w, args)
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}
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@ -0,0 +1,65 @@
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/*
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Copyright 2022 The Flux authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package printers
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import (
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"fmt"
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"io"
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"github.com/olekukonko/tablewriter"
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)
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// TablePrinter is a printer that prints Flux cmd outputs.
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func TablePrinter(header []string) PrinterFunc {
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return func(w io.Writer, args ...interface{}) error {
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var rows [][]string
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for _, arg := range args {
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switch arg := arg.(type) {
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case []interface{}:
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for _, v := range arg {
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s, ok := v.([][]string)
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if !ok {
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return fmt.Errorf("unsupported type %T", v)
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}
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for i := range s {
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rows = append(rows, s[i])
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}
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}
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default:
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return fmt.Errorf("unsupported type %T", arg)
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}
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}
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table := tablewriter.NewWriter(w)
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table.SetHeader(header)
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table.SetAutoWrapText(false)
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table.SetAutoFormatHeaders(true)
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table.SetHeaderAlignment(tablewriter.ALIGN_LEFT)
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table.SetAlignment(tablewriter.ALIGN_LEFT)
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table.SetCenterSeparator("")
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table.SetColumnSeparator("")
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table.SetRowSeparator("")
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table.SetHeaderLine(false)
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table.SetBorder(false)
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table.SetTablePadding("\t")
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table.SetNoWhiteSpace(true)
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table.AppendBulk(rows)
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table.Render()
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return nil
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}
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}
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