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authorFrankie <frankie.pangilinan@consensys.net>2016-08-13 08:43:24 +0800
committerFrankie <frankie.pangilinan@consensys.net>2016-08-13 08:43:24 +0800
commit99a788a6f02ffcd53e88222ab0ba4b89d8040f4f (patch)
tree097fb582484f3c65cb152513167f1b6dbabb8bc6 /app/_locales
parentb72c00a6c15af9692cbaf46b89a19e5cef45f7b7 (diff)
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Add multi message capability to Qr view for market info
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generated by cgit (git 2.34.1) at 2024-10-15 20:23:33 +0800
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package main

import (
    "fmt"
    "math"
    "reflect"
    "runtime"
    "sort"
    "strings"
    "time"

    "github.com/codegangsta/cli"
    "github.com/ethereum/go-ethereum/cmd/utils"
    "github.com/ethereum/go-ethereum/common"
    "github.com/ethereum/go-ethereum/rpc"
    "github.com/ethereum/go-ethereum/rpc/codec"
    "github.com/ethereum/go-ethereum/rpc/comms"
    "github.com/gizak/termui"
)

var (
    monitorCommandAttachFlag = cli.StringFlag{
        Name:  "attach",
        Value: "ipc:" + common.DefaultIpcPath(),
        Usage: "API endpoint to attach to",
    }
    monitorCommandRowsFlag = cli.IntFlag{
        Name:  "rows",
        Value: 5,
        Usage: "Maximum rows in the chart grid",
    }
    monitorCommandRefreshFlag = cli.IntFlag{
        Name:  "refresh",
        Value: 3,
        Usage: "Refresh interval in seconds",
    }
    monitorCommand = cli.Command{
        Action: monitor,
        Name:   "monitor",
        Usage:  `Geth Monitor: node metrics monitoring and visualization`,
        Description: `
The Geth monitor is a tool to collect and visualize various internal metrics
gathered by the node, supporting different chart types as well as the capacity
to display multiple metrics simultaneously.
`,
        Flags: []cli.Flag{
            monitorCommandAttachFlag,
            monitorCommandRowsFlag,
            monitorCommandRefreshFlag,
        },
    }
)

// monitor starts a terminal UI based monitoring tool for the requested metrics.
func monitor(ctx *cli.Context) {
    var (
        client comms.EthereumClient
        err    error
    )
    // Attach to an Ethereum node over IPC or RPC
    endpoint := ctx.String(monitorCommandAttachFlag.Name)
    if client, err = comms.ClientFromEndpoint(endpoint, codec.JSON); err != nil {
        utils.Fatalf("Unable to attach to geth node: %v", err)
    }
    defer client.Close()

    xeth := rpc.NewXeth(client)

    // Retrieve all the available metrics and resolve the user pattens
    metrics, err := retrieveMetrics(xeth)
    if err != nil {
        utils.Fatalf("Failed to retrieve system metrics: %v", err)
    }
    monitored := resolveMetrics(metrics, ctx.Args())
    if len(monitored) == 0 {
        list := expandMetrics(metrics, "")
        sort.Strings(list)
        utils.Fatalf("No metrics specified.\n\nAvailable:\n - %s", strings.Join(list, "\n - "))
    }
    sort.Strings(monitored)
    if cols := len(monitored) / ctx.Int(monitorCommandRowsFlag.Name); cols > 6 {
        utils.Fatalf("Requested metrics (%d) spans more that 6 columns:\n - %s", len(monitored), strings.Join(monitored, "\n - "))
    }
    // Create and configure the chart UI defaults
    if err := termui.Init(); err != nil {
        utils.Fatalf("Unable to initialize terminal UI: %v", err)
    }
    defer termui.Close()

    termui.UseTheme("helloworld")

    rows := len(monitored)
    if max := ctx.Int(monitorCommandRowsFlag.Name); rows > max {
        rows = max
    }
    cols := (len(monitored) + rows - 1) / rows
    for i := 0; i < rows; i++ {
        termui.Body.AddRows(termui.NewRow())
    }
    // Create each individual data chart
    footer := termui.NewPar("")
    footer.HasBorder = true
    footer.Height = 3

    charts := make([]*termui.LineChart, len(monitored))
    units := make([]int, len(monitored))
    data := make([][]float64, len(monitored))
    for i := 0; i < len(monitored); i++ {
        charts[i] = createChart((termui.TermHeight() - footer.Height) / rows)
        row := termui.Body.Rows[i%rows]
        row.Cols = append(row.Cols, termui.NewCol(12/cols, 0, charts[i]))
    }
    termui.Body.AddRows(termui.NewRow(termui.NewCol(12, 0, footer)))

    refreshCharts(xeth, monitored, data, units, charts, ctx, footer)
    termui.Body.Align()
    termui.Render(termui.Body)

    // Watch for various system events, and periodically refresh the charts
    refresh := time.Tick(time.Duration(ctx.Int(monitorCommandRefreshFlag.Name)) * time.Second)
    for {
        select {
        case event := <-termui.EventCh():
            if event.Type == termui.EventKey && event.Key == termui.KeyCtrlC {
                return
            }
            if event.Type == termui.EventResize {
                termui.Body.Width = termui.TermWidth()
                for _, chart := range charts {
                    chart.Height = (termui.TermHeight() - footer.Height) / rows
                }
                termui.Body.Align()
                termui.Render(termui.Body)
            }
        case <-refresh:
            if refreshCharts(xeth, monitored, data, units, charts, ctx, footer) {
                termui.Body.Align()
            }
            termui.Render(termui.Body)
        }
    }
}

// retrieveMetrics contacts the attached geth node and retrieves the entire set
// of collected system metrics.
func retrieveMetrics(xeth *rpc.Xeth) (map[string]interface{}, error) {
    return xeth.Call("debug_metrics", []interface{}{true})
}

// resolveMetrics takes a list of input metric patterns, and resolves each to one
// or more canonical metric names.
func resolveMetrics(metrics map[string]interface{}, patterns []string) []string {
    res := []string{}
    for _, pattern := range patterns {
        res = append(res, resolveMetric(metrics, pattern, "")...)