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141 lines
3.0 KiB
Go
141 lines
3.0 KiB
Go
package main
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import (
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"fmt"
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"io"
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"net/http"
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"net/url"
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"github.com/mkideal/cli"
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"github.com/mkideal/pkg/textutil"
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cl "github.com/rqlite/rqlite/v8/cmd/rqlite/http"
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)
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// Rows represents query result
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type Rows struct {
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Columns []string `json:"columns"`
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Types []string `json:"types"`
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Values [][]interface{} `json:"values"`
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Time float64 `json:"time"`
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Error string `json:"error,omitempty"`
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}
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// RowCount implements textutil.Table interface
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func (r *Rows) RowCount() int {
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return len(r.Values) + 1
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}
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// ColCount implements textutil.Table interface
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func (r *Rows) ColCount() int {
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return len(r.Columns)
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}
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// Get implements textutil.Table interface
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func (r *Rows) Get(i, j int) string {
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if i == 0 {
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if j >= len(r.Columns) {
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return ""
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}
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return r.Columns[j]
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}
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if r.Values == nil {
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return "NULL"
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}
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if i-1 >= len(r.Values) {
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return "NULL"
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}
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if j >= len(r.Values[i-1]) {
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return "NULL"
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}
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return fmt.Sprintf("%v", r.Values[i-1][j])
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}
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func (r *Rows) validate() error {
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if r.Error != "" {
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return fmt.Errorf(r.Error)
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}
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return nil
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}
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// headerRenderStyle render the header of result
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type headerRenderStyle struct {
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textutil.DefaultStyle
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}
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func (render headerRenderStyle) CellRender(row, col int, cell string, cw *textutil.ColorWriter) {
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if row != 0 {
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fmt.Fprint(cw, cell)
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} else {
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fmt.Fprint(cw, cw.Color.Cyan(cell))
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}
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}
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var headerRender = &headerRenderStyle{}
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type queryResponse struct {
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Results []*Rows `json:"results"`
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Error string `json:"error,omitempty"`
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Time float64 `json:"time"`
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}
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func queryWithClient(ctx *cli.Context, client *cl.Client, timer bool, consistency, query string) error {
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queryStr := url.Values{}
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queryStr.Set("level", consistency)
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queryStr.Set("q", query)
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if timer {
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queryStr.Set("timings", "")
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}
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u := url.URL{
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Path: fmt.Sprintf("%sdb/query", client.Prefix),
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RawQuery: queryStr.Encode(),
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}
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var hcr error
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resp, err := client.Query(u)
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if err != nil {
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// If the error is HostChangedError, it should be propagated back to the caller to handle
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// accordingly (change prompt display), but we should still assume that the request succeeded on some
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// host and not treat it as an error.
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innerErr, ok := err.(*cl.HostChangedError)
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if !ok {
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return err
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}
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hcr = innerErr
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}
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response, err := io.ReadAll(resp.Body)
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if err != nil {
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return err
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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return fmt.Errorf("server responded with %s: %s", resp.Status, response)
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}
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// Parse response and write results
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ret := &queryResponse{}
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if err := parseResponse(&response, &ret); err != nil {
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return err
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}
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if ret.Error != "" {
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return fmt.Errorf(ret.Error)
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}
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if len(ret.Results) != 1 {
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return fmt.Errorf("unexpected results length: %d", len(ret.Results))
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}
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result := ret.Results[0]
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if err := result.validate(); err != nil {
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return err
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}
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textutil.WriteTable(ctx, result, headerRender)
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if timer {
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fmt.Printf("Run Time: %f seconds\n", result.Time)
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}
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return hcr
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}
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