Onionr/docs/html/src/onionrproofs/subprocesspow.html

392 lines
18 KiB
HTML
Raw Normal View History

2019-09-23 23:20:14 +00:00
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1" />
<meta name="generator" content="pdoc 0.7.4" />
<title>src.onionrproofs.subprocesspow API documentation</title>
2019-09-23 23:20:14 +00:00
<meta name="description" content="Onionr - Private P2P Communication …" />
<link href='https://cdnjs.cloudflare.com/ajax/libs/normalize/8.0.0/normalize.min.css' rel='stylesheet'>
<link href='https://cdnjs.cloudflare.com/ajax/libs/10up-sanitize.css/8.0.0/sanitize.min.css' rel='stylesheet'>
<link href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css" rel="stylesheet">
<style>.flex{display:flex !important}body{line-height:1.5em}#content{padding:20px}#sidebar{padding:30px;overflow:hidden}.http-server-breadcrumbs{font-size:130%;margin:0 0 15px 0}#footer{font-size:.75em;padding:5px 30px;border-top:1px solid #ddd;text-align:right}#footer p{margin:0 0 0 1em;display:inline-block}#footer p:last-child{margin-right:30px}h1,h2,h3,h4,h5{font-weight:300}h1{font-size:2.5em;line-height:1.1em}h2{font-size:1.75em;margin:1em 0 .50em 0}h3{font-size:1.4em;margin:25px 0 10px 0}h4{margin:0;font-size:105%}a{color:#058;text-decoration:none;transition:color .3s ease-in-out}a:hover{color:#e82}.title code{font-weight:bold}h2[id^="header-"]{margin-top:2em}.ident{color:#900}pre code{background:#f8f8f8;font-size:.8em;line-height:1.4em}code{background:#f2f2f1;padding:1px 4px;overflow-wrap:break-word}h1 code{background:transparent}pre{background:#f8f8f8;border:0;border-top:1px solid #ccc;border-bottom:1px solid #ccc;margin:1em 0;padding:1ex}#http-server-module-list{display:flex;flex-flow:column}#http-server-module-list div{display:flex}#http-server-module-list dt{min-width:10%}#http-server-module-list p{margin-top:0}.toc ul,#index{list-style-type:none;margin:0;padding:0}#index code{background:transparent}#index h3{border-bottom:1px solid #ddd}#index ul{padding:0}#index h4{font-weight:bold}#index h4 + ul{margin-bottom:.6em}@media (min-width:200ex){#index .two-column{column-count:2}}@media (min-width:300ex){#index .two-column{column-count:3}}dl{margin-bottom:2em}dl dl:last-child{margin-bottom:4em}dd{margin:0 0 1em 3em}#header-classes + dl > dd{margin-bottom:3em}dd dd{margin-left:2em}dd p{margin:10px 0}.name{background:#eee;font-weight:bold;font-size:.85em;padding:5px 10px;display:inline-block;min-width:40%}.name:hover{background:#e0e0e0}.name > span:first-child{white-space:nowrap}.name.class > span:nth-child(2){margin-left:.4em}.inherited{color:#999;border-left:5px solid #eee;padding-left:1em}.inheritance em{font-style:normal;font-weight:bold}.desc h2{font-weight:400;font-size:1.25em}.desc h3{font-size:1em}.desc dt code{background:inherit}.source summary,.git-link-div{color:#666;text-align:right;font-weight:400;font-size:.8em;text-transform:uppercase}.source summary > *{white-space:nowrap;cursor:pointer}.git-link{color:inherit;margin-left:1em}.source pre{max-height:500px;overflow:auto;margin:0}.source pre code{font-size:12px;overflow:visible}.hlist{list-style:none}.hlist li{display:inline}.hlist li:after{content:',\2002'}.hlist li:last-child:after{content:none}.hlist .hlist{display:inline;padding-left:1em}img{max-width:100%}.admonition{padding:.1em .5em;margin-bottom:1em}.admonition-title{font-weight:bold}.admonition.note,.admonition.info,.admonition.important{background:#aef}.admonition.todo,.admonition.versionadded,.admonition.tip,.admonition.hint{background:#dfd}.admonition.warning,.admonition.versionchanged,.admonition.deprecated{background:#fd4}.admonition.error,.admonition.danger,.admonition.caution{background:lightpink}</style>
2019-09-23 23:20:14 +00:00
<style media="screen and (min-width: 700px)">@media screen and (min-width:700px){#sidebar{width:30%}#content{width:70%;max-width:100ch;padding:3em 4em;border-left:1px solid #ddd}pre code{font-size:1em}.item .name{font-size:1em}main{display:flex;flex-direction:row-reverse;justify-content:flex-end}.toc ul ul,#index ul{padding-left:1.5em}.toc > ul > li{margin-top:.5em}}</style>
<style media="print">@media print{#sidebar h1{page-break-before:always}.source{display:none}}@media print{*{background:transparent !important;color:#000 !important;box-shadow:none !important;text-shadow:none !important}a[href]:after{content:" (" attr(href) ")";font-size:90%}a[href][title]:after{content:none}abbr[title]:after{content:" (" attr(title) ")"}.ir a:after,a[href^="javascript:"]:after,a[href^="#"]:after{content:""}pre,blockquote{border:1px solid #999;page-break-inside:avoid}thead{display:table-header-group}tr,img{page-break-inside:avoid}img{max-width:100% !important}@page{margin:0.5cm}p,h2,h3{orphans:3;widows:3}h1,h2,h3,h4,h5,h6{page-break-after:avoid}}</style>
</head>
<body>
<main>
<article id="content">
<header>
<h1 class="title">Module <code>src.onionrproofs.subprocesspow</code></h1>
2019-09-23 23:20:14 +00:00
</header>
<section id="section-intro">
<p>Onionr - Private P2P Communication</p>
<p>Multiprocess proof of work</p>
<details class="source">
<summary>
<span>Expand source code</span>
</summary>
2019-09-23 23:20:14 +00:00
<pre><code class="python">#!/usr/bin/env python3
&#34;&#34;&#34;
2019-09-23 23:20:14 +00:00
Onionr - Private P2P Communication
Multiprocess proof of work
&#34;&#34;&#34;
import os
from multiprocessing import Pipe, Process
import threading
import time
import json
import logger
import onionrproofs
import onionrcrypto as crypto
from onionrutils import bytesconverter
from .blocknoncestart import BLOCK_NONCE_START_INT
&#34;&#34;&#34;
2019-09-23 23:20:14 +00:00
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see &lt;https://www.gnu.org/licenses/&gt;.
&#34;&#34;&#34;
2019-09-23 23:20:14 +00:00
class SubprocessPOW:
def __init__(self, data, metadata, subproc_count=None):
&#34;&#34;&#34;
2019-09-23 23:20:14 +00:00
Onionr proof of work using multiple processes
Accepts block data, block metadata
if subproc_count is not set,
os.cpu_count() is used to determine the number of processes
2019-09-23 23:20:14 +00:00
Due to Python GIL multiprocessing/use of external libraries
is necessary to accelerate CPU bound tasks
&#34;&#34;&#34;
2019-09-23 23:20:14 +00:00
# No known benefit to using more processes than there are cores.
# Note: os.cpu_count perhaps not always accurate
if subproc_count is None:
subproc_count = os.cpu_count()
self.subproc_count = subproc_count
self.result = &#39;&#39;
self.shutdown = False
self.data = data
self.metadata = metadata
&#34;&#34;&#34;dump dict to measure bytes of json metadata
Cannot reuse later bc the pow token must be added
&#34;&#34;&#34;
2019-09-23 23:20:14 +00:00
json_metadata = json.dumps(metadata).encode()
self.data = bytesconverter.str_to_bytes(data)
compiled_data = bytes(json_metadata + b&#39;\n&#39; + self.data)
# Calculate difficulty. May use better algorithm in the future.
self.difficulty = onionrproofs.getDifficultyForNewBlock(compiled_data)
2019-09-23 23:20:14 +00:00
logger.info(&#39;Computing POW (difficulty: %s)...&#39; % (self.difficulty,))
self.main_hash = &#39;0&#39; * 64
self.puzzle = self.main_hash[0:min(self.difficulty,
len(self.main_hash))]
2019-09-23 23:20:14 +00:00
self.shutdown = False
self.payload = None
def start(self):
&#34;&#34;&#34;spawn the multiproc handler threads&#34;&#34;&#34;
2019-09-23 23:20:14 +00:00
# Create a new thread for each subprocess
for _ in range(self.subproc_count): # noqa
threading.Thread(target=self._spawn_proc, daemon=True).start()
2019-09-23 23:20:14 +00:00
# Monitor the processes for a payload, shut them down when its found
while True:
if self.payload is None:
time.sleep(0.1)
else:
self.shutdown = True
return self.payload
2019-09-23 23:20:14 +00:00
def _spawn_proc(self):
&#34;&#34;&#34;Create a child proof of work process
wait for data and send shutdown signal when its found&#34;&#34;&#34;
2019-09-23 23:20:14 +00:00
parent_conn, child_conn = Pipe()
p = Process(target=self.do_pow, args=(child_conn,), daemon=True)
2019-09-23 23:20:14 +00:00
p.start()
p.join()
payload = None
try:
while True:
data = parent_conn.recv()
if len(data) &gt;= 1:
payload = data
break
except KeyboardInterrupt:
pass
finally:
parent_conn.send(&#39;shutdown&#39;)
self.payload = payload
def do_pow(self, pipe):
&#34;&#34;&#34;find partial hash colision generating nonce for a block&#34;&#34;&#34;
nonce = BLOCK_NONCE_START_INT
2019-09-23 23:20:14 +00:00
data = self.data
metadata = self.metadata
puzzle = self.puzzle
difficulty = self.difficulty
while True:
# Break if shutdown received
if pipe.poll() and pipe.recv() == &#39;shutdown&#39;:
break
# Load nonce into block metadata
metadata[&#39;pow&#39;] = nonce
# Serialize metadata, combine with block data
payload = json.dumps(metadata).encode() + b&#39;\n&#39; + data
# Check sha3_256 hash of block, compare to puzzle
# Send payload if puzzle finished
2019-09-23 23:20:14 +00:00
token = crypto.hashers.sha3_hash(payload)
# ensure token is string
token = bytesconverter.bytes_to_str(token)
2019-09-23 23:20:14 +00:00
if puzzle == token[0:difficulty]:
pipe.send(payload)
break
nonce += 1</code></pre>
2019-09-23 23:20:14 +00:00
</details>
</section>
<section>
</section>
<section>
</section>
<section>
</section>
<section>
<h2 class="section-title" id="header-classes">Classes</h2>
<dl>
<dt id="src.onionrproofs.subprocesspow.SubprocessPOW"><code class="flex name class">
2019-09-23 23:20:14 +00:00
<span>class <span class="ident">SubprocessPOW</span></span>
<span>(</span><span>data, metadata, subproc_count=None)</span>
</code></dt>
<dd>
<section class="desc"><p>Onionr proof of work using multiple processes
Accepts block data, block metadata
if subproc_count is not set,
os.cpu_count() is used to determine the number of processes</p>
<p>Due to Python GIL multiprocessing/use of external libraries
is necessary to accelerate CPU bound tasks</p></section>
2019-09-23 23:20:14 +00:00
<details class="source">
<summary>
<span>Expand source code</span>
</summary>
2019-09-23 23:20:14 +00:00
<pre><code class="python">class SubprocessPOW:
def __init__(self, data, metadata, subproc_count=None):
&#34;&#34;&#34;
2019-09-23 23:20:14 +00:00
Onionr proof of work using multiple processes
Accepts block data, block metadata
if subproc_count is not set,
os.cpu_count() is used to determine the number of processes
2019-09-23 23:20:14 +00:00
Due to Python GIL multiprocessing/use of external libraries
is necessary to accelerate CPU bound tasks
&#34;&#34;&#34;
2019-09-23 23:20:14 +00:00
# No known benefit to using more processes than there are cores.
# Note: os.cpu_count perhaps not always accurate
if subproc_count is None:
subproc_count = os.cpu_count()
self.subproc_count = subproc_count
self.result = &#39;&#39;
self.shutdown = False
self.data = data
self.metadata = metadata
&#34;&#34;&#34;dump dict to measure bytes of json metadata
Cannot reuse later bc the pow token must be added
&#34;&#34;&#34;
2019-09-23 23:20:14 +00:00
json_metadata = json.dumps(metadata).encode()
self.data = bytesconverter.str_to_bytes(data)
compiled_data = bytes(json_metadata + b&#39;\n&#39; + self.data)
# Calculate difficulty. May use better algorithm in the future.
self.difficulty = onionrproofs.getDifficultyForNewBlock(compiled_data)
2019-09-23 23:20:14 +00:00
logger.info(&#39;Computing POW (difficulty: %s)...&#39; % (self.difficulty,))
self.main_hash = &#39;0&#39; * 64
self.puzzle = self.main_hash[0:min(self.difficulty,
len(self.main_hash))]
2019-09-23 23:20:14 +00:00
self.shutdown = False
self.payload = None
def start(self):
&#34;&#34;&#34;spawn the multiproc handler threads&#34;&#34;&#34;
2019-09-23 23:20:14 +00:00
# Create a new thread for each subprocess
for _ in range(self.subproc_count): # noqa
threading.Thread(target=self._spawn_proc, daemon=True).start()
2019-09-23 23:20:14 +00:00
# Monitor the processes for a payload, shut them down when its found
while True:
if self.payload is None:
time.sleep(0.1)
else:
self.shutdown = True
return self.payload
2019-09-23 23:20:14 +00:00
def _spawn_proc(self):
&#34;&#34;&#34;Create a child proof of work process
wait for data and send shutdown signal when its found&#34;&#34;&#34;
2019-09-23 23:20:14 +00:00
parent_conn, child_conn = Pipe()
p = Process(target=self.do_pow, args=(child_conn,), daemon=True)
2019-09-23 23:20:14 +00:00
p.start()
p.join()
payload = None
try:
while True:
data = parent_conn.recv()
if len(data) &gt;= 1:
payload = data
break
except KeyboardInterrupt:
pass
finally:
parent_conn.send(&#39;shutdown&#39;)
self.payload = payload
def do_pow(self, pipe):
&#34;&#34;&#34;find partial hash colision generating nonce for a block&#34;&#34;&#34;
nonce = BLOCK_NONCE_START_INT
2019-09-23 23:20:14 +00:00
data = self.data
metadata = self.metadata
puzzle = self.puzzle
difficulty = self.difficulty
while True:
# Break if shutdown received
if pipe.poll() and pipe.recv() == &#39;shutdown&#39;:
break
# Load nonce into block metadata
metadata[&#39;pow&#39;] = nonce
# Serialize metadata, combine with block data
payload = json.dumps(metadata).encode() + b&#39;\n&#39; + data
# Check sha3_256 hash of block, compare to puzzle
# Send payload if puzzle finished
2019-09-23 23:20:14 +00:00
token = crypto.hashers.sha3_hash(payload)
# ensure token is string
token = bytesconverter.bytes_to_str(token)
2019-09-23 23:20:14 +00:00
if puzzle == token[0:difficulty]:
pipe.send(payload)
break
nonce += 1</code></pre>
</details>
<h3>Instance variables</h3>
<dl>
<dt id="src.onionrproofs.subprocesspow.SubprocessPOW.metadata"><code class="name">var <span class="ident">metadata</span></code></dt>
<dd>
<section class="desc"><p>dump dict to measure bytes of json metadata
Cannot reuse later bc the pow token must be added</p></section>
</dd>
</dl>
2019-09-23 23:20:14 +00:00
<h3>Methods</h3>
<dl>
<dt id="src.onionrproofs.subprocesspow.SubprocessPOW.do_pow"><code class="name flex">
2019-09-23 23:20:14 +00:00
<span>def <span class="ident">do_pow</span></span>(<span>self, pipe)</span>
</code></dt>
<dd>
<section class="desc"><p>find partial hash colision generating nonce for a block</p></section>
2019-09-23 23:20:14 +00:00
<details class="source">
<summary>
<span>Expand source code</span>
</summary>
2019-09-23 23:20:14 +00:00
<pre><code class="python">def do_pow(self, pipe):
&#34;&#34;&#34;find partial hash colision generating nonce for a block&#34;&#34;&#34;
nonce = BLOCK_NONCE_START_INT
2019-09-23 23:20:14 +00:00
data = self.data
metadata = self.metadata
puzzle = self.puzzle
difficulty = self.difficulty
while True:
# Break if shutdown received
if pipe.poll() and pipe.recv() == &#39;shutdown&#39;:
break
# Load nonce into block metadata
metadata[&#39;pow&#39;] = nonce
# Serialize metadata, combine with block data
payload = json.dumps(metadata).encode() + b&#39;\n&#39; + data
# Check sha3_256 hash of block, compare to puzzle
# Send payload if puzzle finished
2019-09-23 23:20:14 +00:00
token = crypto.hashers.sha3_hash(payload)
# ensure token is string
token = bytesconverter.bytes_to_str(token)
2019-09-23 23:20:14 +00:00
if puzzle == token[0:difficulty]:
pipe.send(payload)
break
nonce += 1</code></pre>
</details>
</dd>
<dt id="src.onionrproofs.subprocesspow.SubprocessPOW.start"><code class="name flex">
2019-09-23 23:20:14 +00:00
<span>def <span class="ident">start</span></span>(<span>self)</span>
</code></dt>
<dd>
<section class="desc"><p>spawn the multiproc handler threads</p></section>
2019-09-23 23:20:14 +00:00
<details class="source">
<summary>
<span>Expand source code</span>
</summary>
2019-09-23 23:20:14 +00:00
<pre><code class="python">def start(self):
&#34;&#34;&#34;spawn the multiproc handler threads&#34;&#34;&#34;
2019-09-23 23:20:14 +00:00
# Create a new thread for each subprocess
for _ in range(self.subproc_count): # noqa
threading.Thread(target=self._spawn_proc, daemon=True).start()
2019-09-23 23:20:14 +00:00
# Monitor the processes for a payload, shut them down when its found
while True:
if self.payload is None:
time.sleep(0.1)
else:
self.shutdown = True
return self.payload</code></pre>
</details>
</dd>
</dl>
</dd>
</dl>
</section>
</article>
<nav id="sidebar">
<h1>Index</h1>
<div class="toc">
<ul></ul>
</div>
<ul id="index">
<li><h3>Super-module</h3>
<ul>
<li><code><a title="src.onionrproofs" href="index.html">src.onionrproofs</a></code></li>
2019-09-23 23:20:14 +00:00
</ul>
</li>
<li><h3><a href="#header-classes">Classes</a></h3>
<ul>
<li>
<h4><code><a title="src.onionrproofs.subprocesspow.SubprocessPOW" href="#src.onionrproofs.subprocesspow.SubprocessPOW">SubprocessPOW</a></code></h4>
2019-09-23 23:20:14 +00:00
<ul class="">
<li><code><a title="src.onionrproofs.subprocesspow.SubprocessPOW.do_pow" href="#src.onionrproofs.subprocesspow.SubprocessPOW.do_pow">do_pow</a></code></li>
<li><code><a title="src.onionrproofs.subprocesspow.SubprocessPOW.metadata" href="#src.onionrproofs.subprocesspow.SubprocessPOW.metadata">metadata</a></code></li>
<li><code><a title="src.onionrproofs.subprocesspow.SubprocessPOW.start" href="#src.onionrproofs.subprocesspow.SubprocessPOW.start">start</a></code></li>
2019-09-23 23:20:14 +00:00
</ul>
</li>
</ul>
</li>
</ul>
</nav>
</main>
<footer id="footer">
<p>Generated by <a href="https://pdoc3.github.io/pdoc"><cite>pdoc</cite> 0.7.4</a>.</p>
2019-09-23 23:20:14 +00:00
</footer>
<script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
<script>hljs.initHighlightingOnLoad()</script>
</body>
</html>