mirror of
https://github.com/varun-r-mallya/Python-BPF.git
synced 2025-12-31 21:06:25 +00:00
beautify container monitor
This commit is contained in:
@ -149,9 +149,9 @@ class ContainerDataCollector:
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return f"docker:{container_id}"
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# For systemd services
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if "system. slice" in path:
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if "system.slice" in path:
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for part in parts:
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if part.endswith(". service"):
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if part.endswith(".service"):
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return part.replace(".service", "")
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# For user slices
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@ -35,6 +35,8 @@ class ContainerMonitorTUI:
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curses.init_pair(4, curses.COLOR_RED, curses.COLOR_BLACK)
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curses.init_pair(5, curses.COLOR_MAGENTA, curses.COLOR_BLACK)
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curses.init_pair(6, curses.COLOR_WHITE, curses.COLOR_BLUE)
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curses.init_pair(7, curses.COLOR_BLUE, curses.COLOR_BLACK)
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curses.init_pair(8, curses.COLOR_WHITE, curses.COLOR_CYAN)
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while True:
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stdscr.clear()
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@ -65,16 +67,15 @@ class ContainerMonitorTUI:
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"""Draw the cgroup selection screen."""
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height, width = stdscr.getmaxyx()
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# Header
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title = "🐳 Container Monitor - Select Cgroup"
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stdscr.attron(curses.color_pair(6))
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stdscr.addstr(0, (width - len(title)) // 2, title)
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stdscr.attroff(curses.color_pair(6))
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# Draw fancy header box
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self._draw_fancy_header(
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stdscr, "🐳 CONTAINER MONITOR", "Select a Cgroup to Monitor"
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)
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# Instructions
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instructions = "↑↓: Navigate | ENTER: Select | q: Quit | r: Refresh"
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stdscr.attron(curses.color_pair(3))
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stdscr.addstr(1, (width - len(instructions)) // 2, instructions)
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stdscr.addstr(3, (width - len(instructions)) // 2, instructions)
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stdscr.attroff(curses.color_pair(3))
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# Get cgroups
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@ -97,38 +98,54 @@ class ContainerMonitorTUI:
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self.selected_index = 0
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# Calculate visible range
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list_height = height - 6
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list_height = height - 8
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if self.selected_index < self.scroll_offset:
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self.scroll_offset = self.selected_index
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elif self.selected_index >= self.scroll_offset + list_height:
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self.scroll_offset = self.selected_index - list_height + 1
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# Draw cgroup list
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start_y = 3
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# Draw cgroup list with fancy borders
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start_y = 5
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stdscr.attron(curses.color_pair(1))
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stdscr.addstr(start_y, 2, "─" * (width - 4))
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stdscr.addstr(start_y, 2, "╔" + "═" * (width - 6) + "╗")
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stdscr.attroff(curses.color_pair(1))
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for i in range(list_height):
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idx = self.scroll_offset + i
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if idx >= len(cgroups):
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break
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cgroup = cgroups[idx]
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y = start_y + 1 + i
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if idx == self.selected_index:
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# Highlight selected
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stdscr.attron(curses.color_pair(2) | curses.A_BOLD | curses.A_REVERSE)
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line = f"► {cgroup.name:<40} ID: {cgroup.id}"
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stdscr.addstr(y, 2, line[: width - 4])
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stdscr.attroff(curses.color_pair(2) | curses.A_BOLD | curses.A_REVERSE)
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else:
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line = f" {cgroup.name:<40} ID: {cgroup.id}"
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stdscr.addstr(y, 2, line[: width - 4])
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stdscr.attron(curses.color_pair(1))
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stdscr.addstr(y, 2, "║")
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stdscr.addstr(y, width - 3, "║")
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stdscr.attroff(curses.color_pair(1))
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# Footer with count
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footer = f"Total cgroups: {len(cgroups)}"
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if idx >= len(cgroups):
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continue
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cgroup = cgroups[idx]
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if idx == self.selected_index:
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# Highlight selected with better styling
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stdscr.attron(curses.color_pair(8) | curses.A_BOLD)
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line = f" ► {cgroup.name:<35} │ ID: {cgroup.id} "
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stdscr.addstr(y, 3, line[: width - 6])
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stdscr.attroff(curses.color_pair(8) | curses.A_BOLD)
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else:
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stdscr.attron(curses.color_pair(7))
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line = f" {cgroup.name:<35} │ ID: {cgroup.id} "
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stdscr.addstr(y, 3, line[: width - 6])
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stdscr.attroff(curses.color_pair(7))
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# Bottom border
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bottom_y = start_y + 1 + list_height
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stdscr.attron(curses.color_pair(1))
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stdscr.addstr(bottom_y, 2, "╚" + "═" * (width - 6) + "╝")
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stdscr.attroff(curses.color_pair(1))
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# Footer with count and scroll indicator
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footer = f"Total: {len(cgroups)} cgroups"
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if len(cgroups) > list_height:
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footer += f" │ Showing {self.scroll_offset + 1}-{min(self.scroll_offset + list_height, len(cgroups))}"
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stdscr.attron(curses.color_pair(1))
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stdscr.addstr(height - 2, (width - len(footer)) // 2, footer)
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stdscr.attroff(curses.color_pair(1))
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@ -144,104 +161,184 @@ class ContainerMonitorTUI:
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stats = self.collector.get_stats_for_cgroup(self.selected_cgroup)
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history = self.collector.get_history(self.selected_cgroup)
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# Header
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title = f"📊 Monitoring: {stats.cgroup_name}"
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stdscr.attron(curses.color_pair(6))
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stdscr.addstr(0, (width - len(title)) // 2, title)
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stdscr.attroff(curses.color_pair(6))
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# Draw fancy header
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self._draw_fancy_header(
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stdscr, f"📊 {stats.cgroup_name}", "Live Performance Metrics"
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)
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# Instructions
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instructions = "ESC/b: Back | q: Quit"
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instructions = "ESC/b: Back to List | q: Quit"
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stdscr.attron(curses.color_pair(3))
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stdscr.addstr(1, (width - len(instructions)) // 2, instructions)
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stdscr.addstr(3, (width - len(instructions)) // 2, instructions)
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stdscr.attroff(curses.color_pair(3))
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# Syscall count (large number display)
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y = 3
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stdscr.attron(curses.color_pair(5) | curses.A_BOLD)
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stdscr.addstr(y, 2, "SYSCALLS")
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stdscr.attroff(curses.color_pair(5) | curses.A_BOLD)
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# Calculate metrics for rate display
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rates = self._calculate_rates(history)
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syscall_str = f"{stats.syscall_count:,}"
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y = 5
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# Syscall count in a fancy box
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self._draw_metric_box(
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stdscr,
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y,
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2,
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width - 4,
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"⚡ SYSTEM CALLS",
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f"{stats.syscall_count:,}",
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f"Rate: {rates['syscalls_per_sec']:.1f}/sec",
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curses.color_pair(5),
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)
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y += 4
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# Network I/O Section
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self._draw_section_header(stdscr, y, "🌐 NETWORK I/O", 1)
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y += 1
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# RX graph with legend
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rx_label = f"RX: {self._format_bytes(stats.rx_bytes)}"
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rx_rate = f"{self._format_bytes(rates['rx_bytes_per_sec'])}/s"
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rx_pkts = f"{stats.rx_packets:,} pkts ({rates['rx_pkts_per_sec']:.1f}/s)"
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self._draw_labeled_graph(
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stdscr,
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y,
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2,
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width - 4,
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4,
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rx_label,
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rx_rate,
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rx_pkts,
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[s.rx_bytes for s in history],
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curses.color_pair(2),
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"Received Traffic (last 100 samples)",
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)
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y += 6
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# TX graph with legend
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tx_label = f"TX: {self._format_bytes(stats.tx_bytes)}"
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tx_rate = f"{self._format_bytes(rates['tx_bytes_per_sec'])}/s"
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tx_pkts = f"{stats.tx_packets:,} pkts ({rates['tx_pkts_per_sec']:.1f}/s)"
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self._draw_labeled_graph(
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stdscr,
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y,
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2,
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width - 4,
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4,
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tx_label,
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tx_rate,
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tx_pkts,
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[s.tx_bytes for s in history],
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curses.color_pair(3),
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"Transmitted Traffic (last 100 samples)",
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)
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y += 6
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# File I/O Section
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self._draw_section_header(stdscr, y, "💾 FILE I/O", 1)
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y += 1
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# Read graph with legend
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read_label = f"READ: {self._format_bytes(stats.read_bytes)}"
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read_rate = f"{self._format_bytes(rates['read_bytes_per_sec'])}/s"
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read_ops = f"{stats.read_ops:,} ops ({rates['read_ops_per_sec']:.1f}/s)"
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self._draw_labeled_graph(
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stdscr,
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y,
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2,
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width - 4,
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4,
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read_label,
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read_rate,
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read_ops,
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[s.read_bytes for s in history],
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curses.color_pair(4),
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"Read Operations (last 100 samples)",
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)
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y += 6
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# Write graph with legend
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write_label = f"WRITE: {self._format_bytes(stats.write_bytes)}"
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write_rate = f"{self._format_bytes(rates['write_bytes_per_sec'])}/s"
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write_ops = f"{stats.write_ops:,} ops ({rates['write_ops_per_sec']:.1f}/s)"
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self._draw_labeled_graph(
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stdscr,
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y,
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2,
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width - 4,
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4,
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write_label,
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write_rate,
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write_ops,
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[s.write_bytes for s in history],
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curses.color_pair(5),
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"Write Operations (last 100 samples)",
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)
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def _draw_fancy_header(self, stdscr, title: str, subtitle: str):
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"""Draw a fancy header with title and subtitle."""
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height, width = stdscr.getmaxyx()
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# Top border
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stdscr.attron(curses.color_pair(6) | curses.A_BOLD)
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stdscr.addstr(0, 0, "═" * width)
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# Title
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stdscr.addstr(0, (width - len(title)) // 2, f" {title} ")
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stdscr.attroff(curses.color_pair(6) | curses.A_BOLD)
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# Subtitle
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stdscr.attron(curses.color_pair(1))
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stdscr.addstr(1, (width - len(subtitle)) // 2, subtitle)
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stdscr.attroff(curses.color_pair(1))
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# Bottom border
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stdscr.attron(curses.color_pair(6))
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stdscr.addstr(2, 0, "═" * width)
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stdscr.attroff(curses.color_pair(6))
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def _draw_metric_box(
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self,
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stdscr,
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y: int,
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x: int,
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width: int,
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label: str,
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value: str,
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detail: str,
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color_pair: int,
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):
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"""Draw a fancy box for displaying a metric."""
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# Top border
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stdscr.attron(color_pair | curses.A_BOLD)
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stdscr.addstr(y, x, "┌" + "─" * (width - 2) + "┐")
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# Label
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stdscr.addstr(y + 1, x, "│")
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stdscr.addstr(y + 1, x + 2, label)
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stdscr.addstr(y + 1, x + width - 1, "│")
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# Value (large)
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stdscr.addstr(y + 2, x, "│")
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stdscr.attroff(color_pair | curses.A_BOLD)
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stdscr.attron(curses.color_pair(2) | curses.A_BOLD)
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stdscr.addstr(y + 1, 4, syscall_str)
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stdscr.addstr(y + 2, x + 4, value)
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stdscr.attroff(curses.color_pair(2) | curses.A_BOLD)
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stdscr.attron(color_pair | curses.A_BOLD)
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stdscr.addstr(y + 2, x + width - 1, "│")
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# Network I/O graphs
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y = 6
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self._draw_section_header(stdscr, y, "NETWORK I/O", 1)
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# Detail
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stdscr.addstr(y + 2, x + width - len(detail) - 3, detail)
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# RX graph
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y += 2
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rx_label = (
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f"RX: {self._format_bytes(stats.rx_bytes)} ({stats.rx_packets:,} packets)"
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)
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stdscr.addstr(y, 2, rx_label)
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if len(history) > 1:
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self._draw_bar_graph(
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stdscr,
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y + 1,
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2,
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width - 4,
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3,
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[s.rx_bytes for s in history],
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curses.color_pair(2),
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)
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# TX graph
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y += 5
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tx_label = (
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f"TX: {self._format_bytes(stats.tx_bytes)} ({stats.tx_packets:,} packets)"
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)
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stdscr.addstr(y, 2, tx_label)
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if len(history) > 1:
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self._draw_bar_graph(
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stdscr,
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y + 1,
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2,
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width - 4,
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3,
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[s.tx_bytes for s in history],
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curses.color_pair(3),
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)
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# File I/O graphs
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y += 5
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self._draw_section_header(stdscr, y, "FILE I/O", 1)
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# Read graph
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y += 2
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read_label = (
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f"READ: {self._format_bytes(stats.read_bytes)} ({stats.read_ops:,} ops)"
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)
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stdscr.addstr(y, 2, read_label)
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if len(history) > 1:
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self._draw_bar_graph(
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stdscr,
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y + 1,
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2,
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width - 4,
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3,
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[s.read_bytes for s in history],
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curses.color_pair(4),
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)
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# Write graph
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y += 5
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write_label = (
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f"WRITE: {self._format_bytes(stats.write_bytes)} ({stats.write_ops:,} ops)"
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)
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stdscr.addstr(y, 2, write_label)
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if len(history) > 1:
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self._draw_bar_graph(
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stdscr,
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y + 1,
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2,
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width - 4,
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3,
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[s.write_bytes for s in history],
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curses.color_pair(5),
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)
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# Bottom border
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stdscr.addstr(y + 3, x, "└" + "─" * (width - 2) + "┘")
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stdscr.attroff(color_pair | curses.A_BOLD)
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def _draw_section_header(self, stdscr, y: int, title: str, color_pair: int):
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"""Draw a section header."""
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@ -251,7 +348,50 @@ class ContainerMonitorTUI:
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stdscr.addstr(y, len(title) + 3, "─" * (width - len(title) - 5))
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stdscr.attroff(curses.color_pair(color_pair) | curses.A_BOLD)
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def _draw_bar_graph(
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def _draw_labeled_graph(
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self,
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stdscr,
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y: int,
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x: int,
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width: int,
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height: int,
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label: str,
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rate: str,
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detail: str,
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data: List[float],
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color_pair: int,
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description: str,
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):
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"""Draw a graph with labels and legend."""
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# Header with metrics
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stdscr.attron(curses.color_pair(1) | curses.A_BOLD)
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stdscr.addstr(y, x, label)
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stdscr.attroff(curses.color_pair(1) | curses.A_BOLD)
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stdscr.attron(curses.color_pair(2))
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stdscr.addstr(y, x + len(label) + 2, rate)
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stdscr.attroff(curses.color_pair(2))
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stdscr.attron(curses.color_pair(7))
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stdscr.addstr(y, x + len(label) + len(rate) + 4, detail)
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stdscr.attroff(curses.color_pair(7))
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# Draw the graph
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if len(data) > 1:
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self._draw_bar_graph_enhanced(
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stdscr, y + 1, x, width, height, data, color_pair
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)
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else:
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stdscr.attron(curses.color_pair(7))
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stdscr.addstr(y + 2, x + 2, "Collecting data...")
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stdscr.attroff(curses.color_pair(7))
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# Graph legend at bottom
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stdscr.attron(curses.color_pair(7))
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stdscr.addstr(y + height + 1, x, f"└─ {description}")
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stdscr.attroff(curses.color_pair(7))
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def _draw_bar_graph_enhanced(
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self,
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stdscr,
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y: int,
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||||
@ -261,15 +401,25 @@ class ContainerMonitorTUI:
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||||
data: List[float],
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||||
color_pair: int,
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||||
):
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||||
"""Draw a simple bar graph."""
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||||
"""Draw an enhanced bar graph with axis and scale."""
|
||||
if not data or width < 2:
|
||||
return
|
||||
|
||||
# Normalize data to graph width
|
||||
# Calculate statistics
|
||||
max_val = max(data) if max(data) > 0 else 1
|
||||
min_val = min(data)
|
||||
avg_val = sum(data) / len(data)
|
||||
|
||||
# Take last 'width' data points
|
||||
recent_data = data[-width:]
|
||||
# Take last 'width - 10' data points (leave room for Y-axis)
|
||||
graph_width = width - 12
|
||||
recent_data = data[-graph_width:] if len(data) > graph_width else data
|
||||
|
||||
# Draw Y-axis labels
|
||||
stdscr.attron(curses.color_pair(7))
|
||||
stdscr.addstr(y, x, f"│{self._format_bytes(max_val):>9}")
|
||||
stdscr.addstr(y + height // 2, x, f"│{self._format_bytes(avg_val):>9}")
|
||||
stdscr.addstr(y + height - 1, x, f"│{self._format_bytes(min_val):>9}")
|
||||
stdscr.attroff(curses.color_pair(7))
|
||||
|
||||
# Draw bars
|
||||
for row in range(height):
|
||||
@ -277,32 +427,78 @@ class ContainerMonitorTUI:
|
||||
bar_line = ""
|
||||
|
||||
for val in recent_data:
|
||||
normalized = val / max_val
|
||||
normalized = val / max_val if max_val > 0 else 0
|
||||
if normalized >= threshold:
|
||||
bar_line += "█"
|
||||
elif normalized >= threshold - 0.2:
|
||||
elif normalized >= threshold - 0.15:
|
||||
bar_line += "▓"
|
||||
elif normalized >= threshold - 0.4:
|
||||
elif normalized >= threshold - 0.35:
|
||||
bar_line += "▒"
|
||||
elif normalized >= threshold - 0.6:
|
||||
elif normalized >= threshold - 0.5:
|
||||
bar_line += "░"
|
||||
else:
|
||||
bar_line += " "
|
||||
|
||||
stdscr.attron(color_pair)
|
||||
stdscr.addstr(y + row, x, bar_line[:width])
|
||||
stdscr.addstr(y + row, x + 11, bar_line)
|
||||
stdscr.attroff(color_pair)
|
||||
|
||||
# Draw X-axis
|
||||
stdscr.attron(curses.color_pair(7))
|
||||
stdscr.addstr(y + height, x + 10, "├" + "─" * len(recent_data))
|
||||
stdscr.addstr(y + height, x + 10 + len(recent_data), "→ time")
|
||||
stdscr.attroff(curses.color_pair(7))
|
||||
|
||||
def _calculate_rates(self, history: List) -> dict:
|
||||
"""Calculate per-second rates from history."""
|
||||
if len(history) < 2:
|
||||
return {
|
||||
"syscalls_per_sec": 0.0,
|
||||
"rx_bytes_per_sec": 0.0,
|
||||
"tx_bytes_per_sec": 0.0,
|
||||
"rx_pkts_per_sec": 0.0,
|
||||
"tx_pkts_per_sec": 0.0,
|
||||
"read_bytes_per_sec": 0.0,
|
||||
"write_bytes_per_sec": 0.0,
|
||||
"read_ops_per_sec": 0.0,
|
||||
"write_ops_per_sec": 0.0,
|
||||
}
|
||||
|
||||
# Calculate delta between last two samples
|
||||
recent = history[-1]
|
||||
previous = history[-2]
|
||||
time_delta = recent.timestamp - previous.timestamp
|
||||
|
||||
if time_delta <= 0:
|
||||
time_delta = 1.0
|
||||
|
||||
return {
|
||||
"syscalls_per_sec": (recent.syscall_count - previous.syscall_count)
|
||||
/ time_delta,
|
||||
"rx_bytes_per_sec": (recent.rx_bytes - previous.rx_bytes) / time_delta,
|
||||
"tx_bytes_per_sec": (recent.tx_bytes - previous.tx_bytes) / time_delta,
|
||||
"rx_pkts_per_sec": (recent.rx_packets - previous.rx_packets) / time_delta,
|
||||
"tx_pkts_per_sec": (recent.tx_packets - previous.tx_packets) / time_delta,
|
||||
"read_bytes_per_sec": (recent.read_bytes - previous.read_bytes)
|
||||
/ time_delta,
|
||||
"write_bytes_per_sec": (recent.write_bytes - previous.write_bytes)
|
||||
/ time_delta,
|
||||
"read_ops_per_sec": (recent.read_ops - previous.read_ops) / time_delta,
|
||||
"write_ops_per_sec": (recent.write_ops - previous.write_ops) / time_delta,
|
||||
}
|
||||
|
||||
def _format_bytes(self, bytes_val: float) -> str:
|
||||
"""Format bytes into human-readable string."""
|
||||
if bytes_val < 0:
|
||||
bytes_val = 0
|
||||
for unit in ["B", "KB", "MB", "GB", "TB"]:
|
||||
if bytes_val < 1024.0:
|
||||
return f"{bytes_val:.2f} {unit}"
|
||||
return f"{bytes_val:.2f}{unit}"
|
||||
bytes_val /= 1024.0
|
||||
return f"{bytes_val:.2f} PB"
|
||||
return f"{bytes_val:.2f}PB"
|
||||
|
||||
def _handle_input(self, key: int) -> bool:
|
||||
"""Handle keyboard input. Returns False to exit."""
|
||||
"""Handle keyboard input. Returns False to exit."""
|
||||
if key == ord("q") or key == ord("Q"):
|
||||
return False # Exit
|
||||
|
||||
|
||||
Reference in New Issue
Block a user