renderer.py 文件源码

def _on_graph(self):
        for cfg in self._cfg:
            size = [str(s) for s in cfg["size"]]
            limits = [str(s) for s in cfg["limits"]]
            g = [cfg["path"], "--imgformat", "PNG",
                 "-w", size[0], "-h", size[1],
                 "--vertical-label", cfg["vlabel"], "-t", cfg["title"],
                 "-s", str(round(time.time()-cfg["length"])),
                 "-l", limits[0], "-u", limits[1]]
            color_iterator = itertools.cycle(("ff0000", "00ff00", "0000ff",
                                              "ff00ff", "ffff00", "00ffff"))

            for entry in cfg["lines"]:
                color = next(color_iterator)
                g.append(f"DEF:{entry['name']}={entry['path']}:value:AVERAGE")
                g.append(f"LINE2:{entry['name']}#{color}:{entry['name']}")

            rrdtool.graph(g)