reimplement health checks (#434)

setup-scripts/bot_utils.py

@@ -3,8 +3,9 @@
 from urllib.request import urlopen, Request
 from dotenv import load_dotenv
 from pathlib import Path
+from datetime import datetime
 
-import urllib, json, os, traceback, discord, sys
+import urllib, json, os, traceback, discord, sys, re, subprocess, requests, io
 
 # sc_precision is the number of hastings per siacoin
 sc_precision = 10 ** 24
@@ -17,6 +18,22 @@ api_endpoint, port, portal_name, bot_token, password = None, None, None, None, N
 discord_client = None
 setup_done = False
 
+# Get the container name as an argument or use "sia" as default.
+CONTAINER_NAME = "sia"
+if len(sys.argv) > 2:
+    CONTAINER_NAME = sys.argv[2]
+
+# find out local siad ip by inspecting its docker container
+def get_api_ip():
+    ip_regex = re.compile(r"^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$")
+    docker_cmd = (
+        "docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' "
+        + CONTAINER_NAME
+    )
+    output = subprocess.check_output(docker_cmd, shell=True).decode("utf-8")
+    return ip_regex.findall(output)[0]
+
+
 def setup():
     # Load dotenv file if possible.
     # TODO: change all scripts to use named flags/params
@@ -37,7 +54,7 @@ def setup():
         port = "9980"
 
     global api_endpoint
-    api_endpoint = "http://localhost:{}".format(port)
+    api_endpoint = "http://{}:{}".format(get_api_ip(), port)
 
     siad.initialize()
 
@@ -46,6 +63,7 @@ def setup():
 
     return bot_token
 
+
 # send_msg sends the msg to the specified discord channel. If force_notify is set to true it adds "@here".
 async def send_msg(client, msg, force_notify=False, file=None):
     await client.wait_until_ready()
@@ -69,13 +87,47 @@ async def send_msg(client, msg, force_notify=False, file=None):
             break
 
     # Add the portal name.
-    msg = "`{}`: {}".format(portal_name, msg)
+    msg = "**{}**: {}".format(portal_name, msg)
+
+    if isinstance(file, str):
+        is_json = is_json_string(file)
+        content_type = "application/json" if is_json else "text/plain"
+        ext = "json" if is_json else "txt"
+        filename = "{}-{}.{}".format(
+            CONTAINER_NAME, datetime.utcnow().strftime("%Y-%m-%d-%H:%M:%S"), ext
+        )
+        skylink = upload_to_skynet(file, filename, content_type=content_type)
+        if skylink:
+            msg = "{} {}".format(msg, skylink)  # append skylink to message
+            file = None  # clean file reference, we're using a skylink
+        else:
+            file = discord.File(
+                io.BytesIO(file.encode()), filename=filename
+            )  # wrap text into discord file wrapper
 
     if force_notify:
-        msg = "{}: \n{}".format(role.mention, msg)
+        msg = "{} /cc {}".format(msg, role.mention)
+
     await chan.send(msg, file=file)
 
 
+def upload_to_skynet(contents, filename="file.txt", content_type="text/plain"):
+    files = {"file": (filename, contents, content_type)}
+    res = requests.post("https://siasky.net/skynet/skyfile", files=files)
+    if res.status_code == requests.codes["ok"]:
+        res_json = res.json()
+        return "https://siasky.net/" + res_json["skylink"]
+    return None
+
+
+def is_json_string(str):
+    try:
+        json.loads(str)
+        return True
+    except ValueError:
+        return False
+
+
 # siad class provides wrappers for the necessary siad commands.
 class siad:
     # initializes values for using the API (password and
@@ -90,7 +142,7 @@ class siad:
 
         # Setup an opener with the correct user agent
         opener = urllib.request.build_opener(handler)
-        opener.addheaders = [('User-agent', 'Sia-Agent')]
+        opener.addheaders = [("User-agent", "Sia-Agent")]
 
         # Install the opener.
         # Now all calls to urllib.request.urlopen use our opener.
@@ -111,26 +163,26 @@ class siad:
     def load_json(resp):
         return json.loads(resp.decode("utf-8"))
 
-
     @staticmethod
     def get_wallet():
-        if not setup_done: setup()
+        if not setup_done:
+            setup()
 
         resp = urllib.request.urlopen(api_endpoint + "/wallet").read()
         return siad.load_json(resp)
 
-
     @staticmethod
     def get_renter():
-        if not setup_done: setup()
+        if not setup_done:
+            setup()
 
         resp = urllib.request.urlopen(api_endpoint + "/renter").read()
         return siad.load_json(resp)
 
-
     @staticmethod
     def get_renter_contracts():
-        if not setup_done: setup()
+        if not setup_done:
+            setup()
 
         resp = urllib.request.urlopen(api_endpoint + "/renter/contracts").read()
         return siad.load_json(resp)

setup-scripts/funds-checker.py

@@ -27,7 +27,6 @@ async def run_checks():
     print("Running Skynet portal funds checks")
     try:
         await check_funds()
-
     except:  # catch all exceptions
         trace = traceback.format_exc()
         await send_msg(client, "```\n{}\n```".format(trace), force_notify=True)
@@ -41,38 +40,43 @@ async def check_funds():
     wallet_get = siad.get_wallet()
     renter_get = siad.get_renter()
 
-    if not wallet_get['unlocked']:
+    if not wallet_get["unlocked"]:
         await send_msg(client, "Wallet locked", force_notify=True)
         return
 
-    confirmed_coins = int(wallet_get['confirmedsiacoinbalance'])
+    confirmed_coins = int(wallet_get["confirmedsiacoinbalance"])
-    unconfirmed_coins = int(wallet_get['unconfirmedincomingsiacoins'])
+    unconfirmed_coins = int(wallet_get["unconfirmedincomingsiacoins"])
-    unconfirmed_outgoing_coins = int(wallet_get['unconfirmedoutgoingsiacoins'])
+    unconfirmed_outgoing_coins = int(wallet_get["unconfirmedoutgoingsiacoins"])
     balance = confirmed_coins + unconfirmed_coins - unconfirmed_outgoing_coins
     print("Balance: ", balance / sc_precision)
 
-    allowance = renter_get['settings']['allowance']
+    allowance = renter_get["settings"]["allowance"]
-    allowance_funds = int(allowance['funds'])
+    allowance_funds = int(allowance["funds"])
-    allocated_funds = int(renter_get['financialmetrics']['totalallocated'])
+    allocated_funds = int(renter_get["financialmetrics"]["totalallocated"])
     unallocated_funds = allowance_funds - allocated_funds
 
-
+    balance_msg = "Balance: {} SC, Allowance Funds: {} SC".format(
-    balance_msg = "Balance: `{} SC` Allowance Funds: `{} SC`".format(round(balance/sc_precision), round(allowance_funds/sc_precision))
+        round(balance / sc_precision), round(allowance_funds / sc_precision)
-    alloc_msg = "Unallocated: `{} SC`\nAllocated: `{} SC`".format(round(unallocated_funds/sc_precision), round(allocated_funds/sc_precision))
+    )
+    alloc_msg = "Unallocated: {} SC, Allocated: {} SC".format(
+        round(unallocated_funds / sc_precision), round(allocated_funds / sc_precision)
+    )
 
     # Send an alert if there is less than 1 allowance worth of money left.
     if balance < allowance_funds:
-        await send_msg(client, "Wallet balance running low. \n{}".format(balance_msg), force_notify=True)
+        message = "__Wallet balance running low!__ {}".format(balance_msg)
-        return
+        return await send_msg(client, message, force_notify=True)
 
     # Alert devs when only a fraction of the allowance is remaining.
     SPEND_THRESHOLD = 0.8
     if allocated_funds >= SPEND_THRESHOLD * allowance_funds:
-        await send_msg(client, "More than {:.0%} of allowance spent: \n{}".format(SPEND_THRESHOLD, alloc_msg), force_notify=True)
+        message = "__More than {:.0%} of allowance spent!__ {}".format(
-        return
+            SPEND_THRESHOLD, alloc_msg
+        )
+        return await send_msg(client, message, force_notify=True)
 
     # Send an informational heartbeat if all checks passed.
-    await send_msg(client, "Funds checks passed:\n{} \n{}".format(balance_msg, alloc_msg))
+    await send_msg(client, "Funds checks passed. {} {}".format(balance_msg, alloc_msg))
 
 
 client.run(bot_token)

setup-scripts/health-checker.py

@@ -1,19 +1,8 @@
 #!/usr/bin/env python3
 
-import asyncio
+import asyncio, json, os, re, sys, traceback, discord, requests
-import io
-import json
-import os
-import re
-import sys
-import traceback
 from datetime import datetime, timedelta
-
-import discord
-import pytz.reference
-import requests
 from bot_utils import setup, send_msg
-from tzlocal import get_localzone
 
 """
 health-checker reads the /health-check endpoint of the portal and dispatches
@@ -55,19 +44,19 @@ async def run_checks():
     try:
         await check_load_average()
         await check_disk()
-        # await check_health() # FIXME: adjust it to work with https://github.com/NebulousLabs/skynet-webportal/pull/389
+        await check_health()
     except:
         trace = traceback.format_exc()
         print("[DEBUG] run_checks() failed.")
-        if len(trace) < DISCORD_MAX_MESSAGE_LENGTH:
+        await send_msg(
-            await send_msg(client, "```\n{}\n```".format(trace), force_notify=False)
+            client,
-        else:
+            "Failed to run the portal health checks!",
-            await send_msg(client, "Failed to run the portal health checks!",
+            file=trace,
-                           file=discord.File(io.BytesIO(trace.encode()), filename="failed_checks.log"),
+            force_notify=True,
-                           force_notify=True)
+        )
 
 
-# check_load_average monitors the system's load average value and issues a
+# check_load_average monitors the system load average value and issues a
 # warning message if it exceeds 10.
 async def check_load_average():
     uptime_string = os.popen("uptime").read().strip()
@@ -77,7 +66,8 @@ async def check_load_average():
         pattern = "^.*load average: \d*\.\d*, \d*\.\d*, (\d*\.\d*)$"
     load_av = re.match(pattern, uptime_string).group(1)
     if float(load_av) > 10:
-        await send_msg(client, "High system load detected: `uptime: {}`".format(uptime_string), force_notify=True)
+        message = "High system load detected in uptime output: {}".format(uptime_string)
+        await send_msg(client, message, force_notify=True)
 
 
 # check_disk checks the amount of free space on the /home partition and issues
@@ -100,13 +90,12 @@ async def check_disk():
             vol = mp
             break
     if vol == "":
-        msg = "Failed to check free disk space! Didn't find a suitable mount point to check.\ndf output:\n{}".format(df)
+        message = "Failed to check free disk space! Didn't find a suitable mount point to check."
-        await send_msg(client, msg)
+        return await send_msg(client, message, file=df)
-        return
     if int(volumes[vol]) < FREE_DISK_SPACE_THRESHOLD:
         free_space_gb = "{:.2f}".format(int(volumes[vol]) / GB)
-        await send_msg(client, "WARNING! Low disk space: {}GiB".format(free_space_gb), force_notify=True)
+        message = "WARNING! Low disk space: {}GiB".format(free_space_gb)
-        return
+        return await send_msg(client, message, force_notify=True)
 
 
 # check_health checks /health-check endpoint and reports recent issues
@@ -114,55 +103,94 @@ async def check_health():
     print("\nChecking portal health status...")
 
     try:
-        res = requests.get("http://localhost/health-check", verify=False)
+        res_check = requests.get("http://localhost/health-check", verify=False)
+        json_check = res_check.json()
+        json_critical = requests.get(
+            "http://localhost/health-check/critical", verify=False
+        ).json()
+        json_verbose = requests.get(
+            "http://localhost/health-check/verbose", verify=False
+        ).json()
     except:
         trace = traceback.format_exc()
         print("[DEBUG] check_health() failed.")
-        if len(trace) < DISCORD_MAX_MESSAGE_LENGTH:
+        return await send_msg(
-            await send_msg(client, "```\n{}\n```".format(trace), force_notify=False)
+            client, "Failed to run the checks!", file=trace, force_notify=True
-        else:
+        )
-            await send_msg(client, "Failed to run the checks!",
+
-                           file=discord.File(io.BytesIO(trace.encode()), filename="failed_checks.log"),
+    critical_checks_total = 0
-                           force_notify=True)
+    critical_checks_failed = 0
-        return
+
+    verbose_checks_total = 0
+    verbose_checks_failed = 0
 
-    # Check the health records.
-    passed_checks = 0
-    failed_checks = 0
-    failed_critical = 0
     failed_records = []
-    time_limit_unaware = datetime.now() - timedelta(hours=CHECK_HOURS)  # local time
+    failed_records_file = None
-    time_limit = time_limit_unaware.astimezone(get_localzone())  # time with time zone
+
-    for rec in res.json():
+    time_limit = datetime.utcnow() - timedelta(hours=CHECK_HOURS)
-        time_unaware = datetime.strptime(rec['date'], '%Y-%m-%dT%H:%M:%S.%fZ')  # time in UTC
+
-        time = pytz.utc.localize(time_unaware)  # time with time zone
+    for critical in json_critical:
+        time = datetime.strptime(critical["date"], "%Y-%m-%dT%H:%M:%S.%fZ")
         if time < time_limit:
             continue
         bad = False
-        for check in rec['checks']:
+        for check in critical["checks"]:
-            if check['up'] == False:
+            critical_checks_total += 1
+            if check["up"] == False:
+                critical_checks_failed += 1
                 bad = True
-                failed_checks += 1
-                if check['critical']:
-                    failed_critical += 1
         if bad:
-            # We append the entire record, so we can get the full context.
+            failed_records.append(critical)
-            failed_records.append(rec)
-        passed_checks += 1
 
-    checks = passed_checks + failed_checks
+    for verbose in json_verbose:
-    if len(failed_records) > 0:
+        time = datetime.strptime(verbose["date"], "%Y-%m-%dT%H:%M:%S.%fZ")
-        message = "Found {}/{} failed checks ({} critical) over the last {} hours!".format(failed_checks, checks,
+        if time < time_limit:
-                                                                                           failed_critical, CHECK_HOURS)
+            continue
-        file = discord.File(io.BytesIO(json.dumps(failed_records, indent=2).encode()), filename="failed_checks.log")
+        bad = False
-        notifyTeam = failed_critical > 0
+        for check in verbose["checks"]:
-        await send_msg(client, message, file=file, force_notify=notifyTeam)
+            verbose_checks_total += 1
-        return
+            if check["up"] == False:
+                verbose_checks_failed += 1
+                bad = True
+        if bad:
+            failed_records.append(verbose)
 
-    # Send an informational heartbeat if all checks passed but only if it's in
+    ################################################################################
-    # the first CHECK_HOURS hours of the day, essentially the first call.
+    ################ create a message
-    if datetime.now().hour < CHECK_HOURS:
+    ################################################################################
-        await send_msg(client, "Health checks passed: {}/{}\n".format(passed_checks, checks))
+
+    message = ""
+    force_notify = False
+
+    if json_check["disabled"]:
+        message += "__Portal manually disabled!__ "
+        force_notify = True
+    elif res_check.status_code is not requests.codes["ok"]:
+        message += "__Portal down!!!__ "
+        force_notify = True
+
+    if critical_checks_failed:
+        message += "{}/{} CRITICAL checks failed over the last {} hours! ".format(
+            critical_checks_failed, critical_checks_total, CHECK_HOURS
+        )
+    else:
+        message += "All {} critical checks passed. ".format(critical_checks_total)
+
+    if verbose_checks_failed:
+        message += "{}/{} verbose checks failed over the last {} hours! ".format(
+            verbose_checks_failed, verbose_checks_total, CHECK_HOURS
+        )
+    else:
+        message += "All {} verbose checks passed. ".format(verbose_checks_total)
+
+    if len(failed_records):
+        failed_records_file = json.dumps(failed_records, indent=2)
+
+    # send a message if we force notification, there is a failures dump or just once daily (heartbeat) on 1 AM
+    if force_notify or failed_records_file or datetime.utcnow().hour == 1:
+        return await send_msg(
+            client, message, file=failed_records_file, force_notify=force_notify
+        )
 
 
 client.run(bot_token)

setup-scripts/log-checker.py

@@ -1,8 +1,7 @@
 #!/usr/bin/env python3
 
 import discord, sys, traceback, io, os, asyncio
-from bot_utils import setup, send_msg
+from bot_utils import setup, send_msg, upload_to_skynet
-from datetime import datetime, timedelta
 from subprocess import Popen, PIPE
 
 """
@@ -61,13 +60,21 @@ async def run_checks():
 async def check_docker_logs():
     print("\nChecking docker logs...")
 
-    now = datetime.now()
+    since_string = "{}h".format(CHECK_HOURS)
-    time = now - timedelta(hours=CHECK_HOURS)
-    time_string = "{}h".format(CHECK_HOURS)
 
     # Read the logs.
-    print("[DEBUG] Will run `docker logs --since {} {}`".format(time_string, CONTAINER_NAME))
+    print(
-    proc = Popen(["docker", "logs", "--since", time_string, CONTAINER_NAME], stdin=PIPE, stdout=PIPE, stderr=PIPE, text=True)
+        "[DEBUG] Will run `docker logs --since {} {}`".format(
+            since_string, CONTAINER_NAME
+        )
+    )
+    proc = Popen(
+        ["docker", "logs", "--since", since_string, CONTAINER_NAME],
+        stdin=PIPE,
+        stdout=PIPE,
+        stderr=PIPE,
+        text=True,
+    )
     std_out, std_err = proc.communicate()
 
     if len(std_err) > 0:
@@ -76,28 +83,24 @@ async def check_docker_logs():
         if len(std_err) > one_mb:
             pos = std_err.find("\n", -one_mb)
             std_err = std_err[pos + 1 :]
-        upload_name = "{}-{}-{}-{}-{}:{}:{}_err.log".format(CONTAINER_NAME, time.year, time.month, time.day, time.hour, time.minute, time.second)
+            return await send_msg(
-        await send_msg(client, "Error(s) found in log!", file=discord.File(io.BytesIO(std_err.encode()), filename=upload_name), force_notify=True)
+                client, "Error(s) found in log!", file=std_err, force_notify=True
-        # Send at most DISCORD_MAX_MESSAGE_LENGTH characters of logs, rounded
+            )
-        # down to the nearest new line. This is a limitation in the size of
-        # Discord messages - they can be at most 2000 characters long (and we
-        # send some extra characters before the error log).
-        if len(std_err) > DISCORD_MAX_MESSAGE_LENGTH:
-            pos = std_err.find("\n", -DISCORD_MAX_MESSAGE_LENGTH)
-            std_err = std_err[pos+1:]
-        await send_msg(client, "Error(s) preview:\n{}".format(std_err), force_notify=True)
-        return
 
     # If there are any critical or severe errors. upload the whole log file.
-    if 'Critical' in std_out or 'Severe' in std_out or 'panic' in std_out:
+    if "Critical" in std_out or "Severe" in std_out or "panic" in std_out:
-        upload_name = "{}-{}-{}-{}-{}:{}:{}.log".format(CONTAINER_NAME, time.year, time.month, time.day, time.hour, time.minute, time.second)
+        return await send_msg(
-        await send_msg(client, "Critical or Severe error found in log!", file=discord.File(io.BytesIO(std_out.encode()), filename=upload_name), force_notify=True)
+            client,
-        return
+            "Critical or Severe error found in log!",
+            file=std_out,
+            force_notify=True,
+        )
 
     # No critical or severe errors, return a heartbeat type message
-    pretty_before = time.strftime("%I:%M%p")
+    return await send_msg(
-    pretty_now = now.strftime("%I:%M%p")
+        client,
-    await send_msg(client, "No critical or severe warnings in log from `{}` to `{}`".format(pretty_before, pretty_now))
+        "No critical or severe warnings in log since `{}` hours".format(CHECK_HOURS),
+    )
 
 
 client.run(bot_token)

setup-scripts/setup-health-check-scripts.sh

@@ -5,7 +5,7 @@ set -e # exit on first error
 sudo apt-get update
 sudo apt-get -y install python3-pip
 
-pip3 install discord.py python-dotenv requests pytz tzlocal
+pip3 install discord.py python-dotenv requests
 
 fundsCheck="0 0,8,16 * * * /home/user/skynet-webportal/setup-scripts/funds-checker.py /home/user/skynet-webportal/.env"
 logsCheck="0 0,8,16 * * * /home/user/skynet-webportal/setup-scripts/log-checker.py /home/user/skynet-webportal/.env sia 8"