v0.8: README draft, configuration
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.gitignore
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config.ini
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README.md
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README.md
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# BlockyGrapher
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Query grapher for Blocky DNS Server
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Query grapher for Blocky DNS Server
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## Install python packages
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Debian-based:
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```bash
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# install system packages
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apt install i2c-tools python3-dev python3-pip python3-numpy libfreetype6-dev libjpeg-dev build-essential
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# Give user permission to use i2c interface (Replace user with your name). Remember that you need re-login to user after this (You can reboot too if it didn't work for some reason).
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usermod -a -G i2c user
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# install python packages
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pip install -r requirements.txt --break-system-packages
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```
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## Finding right port
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`i2cdetect -l` can help to find port you need to use.
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Schematics for your adapter/board can also help.
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@ -120,9 +120,9 @@ def movepoints(points, insertq, restarts, insertr):
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i += 1
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return points, restarts
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def parsedata(prev, flaunch):
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def extractor(prev, flaunch, url):
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try:
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data = str(urllib.request.urlopen("http://10.0.0.28:4500/metrics").read()).split("\\n")
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data = str(urllib.request.urlopen(url).read()).split("\\n")
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count = 0
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i = 0
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while data[i] != "# TYPE blocky_query_total counter":
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@ -134,7 +134,14 @@ def parsedata(prev, flaunch):
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else:
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count += int(re.sub('blocky_query_total{.*?} ', '', data[i]))
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i += 1
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except urllib.error.URLError as e:
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cliout(f"Connection to server failed: {e.reason}", 2)
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if flaunch == True:
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return -1
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else:
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return 0, -1
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except:
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cliout("Extraction failed.", 2)
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if flaunch == True:
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return -1
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else:
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@ -144,7 +151,7 @@ def parsedata(prev, flaunch):
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else:
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return count, count - prev
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def drawout(sclpo, maxcanv, failture, restart):
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def drawout(sclpo, maxcanv, failture, restart, distance, dots):
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match device.height:
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case 32:
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# todo: backport
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@ -168,12 +175,13 @@ def drawout(sclpo, maxcanv, failture, restart):
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with canvas(device) as draw:
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# Graph
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currpoint = 1
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targetpx = 118
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targetpx = 128 - distance
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while currpoint < len(sclpo):
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draw.line((targetpx + 10, 47 - sclpo[currpoint - 1], targetpx, 47 - sclpo[currpoint]), fill="white")
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draw.rectangle((targetpx - 1, 47 - sclpo[currpoint] - 1, targetpx + 1, 47 - sclpo[currpoint] + 1), fill="white")
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draw.line((targetpx + distance, 47 - sclpo[currpoint - 1], targetpx, 47 - sclpo[currpoint]), fill="white")
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if dots == True:
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draw.rectangle((targetpx - 1, 47 - sclpo[currpoint] - 1, targetpx + 1, 47 - sclpo[currpoint] + 1), fill="white")
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currpoint += 1
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targetpx -= 10
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targetpx -= distance
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# Draw black boxes to make sure that graph will not interfere
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draw.rectangle((0, 48, 128, 64), fill="black")
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draw.rectangle((0, 0, 6 * len(str(maxcanv)), 9), fill="black")
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@ -193,30 +201,82 @@ def drawout(sclpo, maxcanv, failture, restart):
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with canvas(device) as draw:
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draw.text((0,0), "Display not supported", font=smafont, fill="white")
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def getdata(oldtotal):
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total, query = parsedata(oldtotal, False)
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def getdata(oldtotal, url):
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total, query = extractor(oldtotal, False, url)
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# Server lifetime counter | Difference | Err? | Restarted?
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if query == -1:
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cliout("Extractor finished with error.", 1)
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return oldtotal, 0, True, False
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if total < oldtotal:
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cliout("Server restart was detected.", 1)
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return total, 0, False, True
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return total, query, False, False
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def main():
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print("Blocky Graph Monitor for OLED v0.7")
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print("(C) Nikopol 2024")
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def cliout(data, code):
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time = datetime.datetime.now().strftime("%H:%M:%S")
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match code:
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case 0:
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codes = "I"
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case 1:
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codes = "W"
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case 2:
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codes = "E"
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case 3:
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codes = "F"
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print(f"[{codes}] [{time}] {data}")
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def main():
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cliout("Blocky Graph Monitor for OLED v0.8b", 0)
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cliout("(C) Nikopol 2024", 0)
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cliout("Init...", 0)
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# vars spagetti
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url = "http://127.0.0.1:4500/metrics"
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pointscount = 14
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distance = 10
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today_last_time = "NaN"
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last_hrs = "NaN"
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i = 0
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i = 1
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failture = False
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restart = False
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rstate = False
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dots = False
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device.contrast(0)
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pointsmap = [0] * 14
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# Load config
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try:
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filedata = open("config.ini").readlines()
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except FileNotFoundError:
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f = open("config.ini", "x")
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f.write("[source]\nurl = http://127.0.0.1:4500/metrics\n[appearance]\npoints = 14\npointsDistance = 10")
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f.close()
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cliout("config.ini does not exist. Please edit newly created file and start the program.", 3)
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exit()
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except:
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cliout("Failed to read config file. Are permissions correct?", 3)
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exit()
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while i < len(filedata):
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if "url = " in filedata[i]:
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url = filedata[i][6:].rstrip()
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if "points = " in filedata[i]:
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pointscount = int(filedata[i][9:])
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if "pointsDistance = " in filedata[i]:
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distance = int(filedata[i][17:])
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if "dots = True" in filedata[i]:
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dots = True
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i += 1
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i = 0
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cliout("Config load ok", 0)
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pointsmap = [0] * pointscount
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restartmap = [True] * len(pointsmap)
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total = parsedata(0, True)
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total = extractor(0, True, url)
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# Show fail on boot time if occurs.
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if total == -1:
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failture = True
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while True:
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now = datetime.datetime.now()
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today_time = now.strftime("%H:%M")
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@ -228,7 +288,8 @@ def main():
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#if 1:
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last_hrs = hrs
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# Grab fresh data
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total, query, failture, rstate = getdata(total)
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cliout("Extracting data...", 0)
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total, query, failture, rstate = getdata(total, url)
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#print(total)
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#print(query)
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# Now write it to (raw) array and move older data
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@ -238,18 +299,18 @@ def main():
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# also write restart map
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restart = False
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while i < len(restartmap):
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print(restartmap[i])
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if restartmap[i] == True:
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restart = True
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i += 1
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i = 0
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drawout(sclpo, maxcanv, failture, restart)
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cliout(f"Done. Current: {query}", 0)
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drawout(sclpo, maxcanv, failture, restart, distance, dots)
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time.sleep(1)
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if __name__ == "__main__":
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try:
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#print("\n".join(sys.argv))
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print("[I] Preinit...")
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device = get_device()
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regfont = make_font("TerminusTTF-4.49.3.ttf", 22)
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smafont = make_font("TerminusTTF-4.49.3.ttf", 12)
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2
requirements.txt
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2
requirements.txt
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luma.core==2.4.2
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luma.oled==3.13.0
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