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64 <div class="section" id="installing-pyams"> |
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65 <span id="install"></span><h1>Installing PyAMS<a class="headerlink" href="#installing-pyams" title="Permalink to this headline">¶</a></h1> |
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66 <p>PyAMS default installation is based on <a class="reference external" href="http://www.buildout.org">Buildout</a> utility. It’s not mandatory to use a |
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67 virtual environment, but it allows you to have a better control over your Python resources.</p> |
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68 <p>Current PyAMS version is based and validated for Python 3.4; your Python environment must also include a C |
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69 compiler as well as development headers for Python, <em>libjpeg</em>, <em>libpng</em>, <em>libfreetype</em>, <em>libxml2</em>, <em>libxslt</em> and |
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70 eventually <em>libldap</em> or <em>libzmq</em>.</p> |
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71 <p>PyAMS default components configuration also pre-suppose that the following external tools are available:</p> |
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72 <ul class="simple"> |
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73 <li>a <em>memcached</em> server, to store sessions and cache (can be changed through Beaker configuration)</li> |
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74 </ul> |
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75 <p>Optional tools also include:</p> |
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76 <ul class="simple"> |
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77 <li>an <em>ElasticSearch</em> server for full text indexing (see <em>PyAMS_content_es</em> package)</li> |
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78 <li>a <em>WebSockets</em> server using async IO. This is used to manage notifications (see <em>PyAMS_notify</em> and <em>PyAMS_notify_ws</em> |
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79 packages). An <em>out of the box</em> environment can be built using <em>pyams_asyncio</em> scaffold provided by <em>pyams_base</em> |
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80 package.</li> |
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81 </ul> |
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82 <p>You can also choose to use a local ZODB instance, or a ZEO server (which can be local or remote, but is required if |
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83 you want to use PyAMS in a muti-processes configuration).</p> |
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84 <div class="section" id="creating-initial-buildout"> |
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85 <h2>Creating initial buildout<a class="headerlink" href="#creating-initial-buildout" title="Permalink to this headline">¶</a></h2> |
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86 <p>PyAMS provides a new Pyramid scaffold, called <em>pyams</em>, provided by the <em>pyams_base</em> package.</p> |
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87 <p>A simple option to install PyAMS is to create a buildout environment including <em>Pyramid</em> and <em>PyAMS_base</em> packages:</p> |
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88 <div class="highlight-bash"><div class="highlight"><pre><span class="c"># mkdir /var/local/env/</span> |
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89 <span class="c"># pip3 install virtualenv</span> |
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90 <span class="c"># virtualenv --python=python3.4 pyams</span> |
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91 <span class="c"># cd pyams</span> |
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92 <span class="c"># . bin/activate</span> |
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93 <span class="o">(</span>pyams<span class="o">)</span> <span class="c"># pip3.4 install zc.buildout</span> |
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94 <span class="o">(</span>pyams<span class="o">)</span> <span class="c"># buildout init</span> |
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95 </pre></div> |
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96 </div> |
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97 <p>Then update your Buildout configuration file <em>buildout.cfg</em> as follow:</p> |
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98 <div class="highlight-ini"><div class="highlight"><pre><span class="k">[buildout]</span> |
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99 <span class="na">find-links</span> <span class="o">=</span> <span class="s">http://download.ztfy.org/eggs</span> |
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100 <span class="na">extends</span> <span class="o">=</span> <span class="s">http://download.ztfy.org/pyams/pyams-0.1.0.cfg</span> |
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101 <span class="na">socket-timeout</span> <span class="o">=</span> <span class="s">3</span> |
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102 <span class="na">show-picked-versions</span> <span class="o">=</span> <span class="s">true</span> |
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103 <span class="na">newest</span> <span class="o">=</span> <span class="s">false</span> |
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104 <span class="na">allow-hosts</span> <span class="o">=</span><span class="s"></span> |
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105 <span class="s"> *.python.org</span> |
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106 <span class="s"> *.sourceforge.net</span> |
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107 <span class="s"> github.com</span> |
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108 <span class="s"> bitbucket.org</span> |
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109 <span class="na">versions</span> <span class="o">=</span> <span class="s">versions</span> |
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110 <span class="na">eggs-directory</span> <span class="o">=</span> <span class="s">eggs</span> |
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111 <span class="na">parts</span> <span class="o">=</span> <span class="s">pyramid</span> |
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112 |
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113 <span class="k">[pyramid]</span> |
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114 <span class="na">recipe</span> <span class="o">=</span> <span class="s">zc.recipe.egg</span> |
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115 <span class="na">dependent-scripts</span> <span class="o">=</span> <span class="s">true</span> |
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116 <span class="na">eggs</span> <span class="o">=</span><span class="s"></span> |
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117 <span class="s"> pyramid</span> |
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118 <span class="s"> pyams_base</span> |
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119 <span class="na">interpreter</span> <span class="o">=</span> <span class="s">py3.4</span> |
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120 </pre></div> |
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121 </div> |
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122 <p>Then launch the buildout initialization:</p> |
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123 <div class="highlight-bash"><div class="highlight"><pre><span class="o">(</span>pyams<span class="o">)</span> <span class="c"># ./bin/buildout</span> |
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124 <span class="o">(</span>pyams<span class="o">)</span> <span class="c"># ./bin/pcreate -l</span> |
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125 Available scaffolds: |
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126 alchemy: Pyramid project using SQLAlchemy, SQLite, URL dispatch, and |
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127 pyams: Pyramid project using all PyAMS packages |
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128 starter: Pyramid starter project using URL dispatch and Chameleon |
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129 zodb: Pyramid project using ZODB, traversal, and Chameleon |
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130 <span class="o">(</span>pyams<span class="o">)</span> <span class="c"># ./bin/pcreate -t pyams myapp</span> |
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131 <span class="o">(</span>pyams<span class="o">)</span> <span class="c"># cd myapp</span> |
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132 </pre></div> |
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133 </div> |
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134 <p>You can then check, and eventually update, the proposed Buildout configuration file <em>buildout.cfg</em>, to add or remove |
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135 packages or update settings to your needs. Then finalize Bootstrap initialization:</p> |
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136 <div class="highlight-bash"><div class="highlight"><pre><span class="o">(</span>pyams<span class="o">)</span> <span class="c"># ../bin/buildout bootstrap</span> |
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137 <span class="o">(</span>pyams<span class="o">)</span> <span class="c"># ./bin/buildout</span> |
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138 </pre></div> |
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139 </div> |
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140 <p>This last operation can be quite long, as many packages have to downloaded, compiled and installed in the virtual |
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141 environment. If you encounter any compile error, just install the required dependencies and restart the buildout.</p> |
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142 </div> |
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143 <div class="section" id="environment-settings"> |
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144 <h2>Environment settings<a class="headerlink" href="#environment-settings" title="Permalink to this headline">¶</a></h2> |
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145 <p>The project generated from <em>pyams</em> scaffold is based on default Pyramid’s <em>zodb</em> scaffold, but it adds:</p> |
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146 <ul class="simple"> |
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147 <li>a custom application factory, in the <em>webapp</em> directory (see <a class="reference internal" href="site.html#site"><span class="std std-ref">PyAMS site management</span></a>)</li> |
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148 <li>a set of directories to store runtime data, in the <em>var</em> directory; each directory contains a <em>README.txt</em> file |
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149 which should be self-explanatory to indicate what this directory should contain, including a ZODB or a ZEO cache</li> |
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150 <li>a set of configuration files, in the <em>etc</em> directory; here are standard <em>development.ini</em> and <em>production.ini</em> |
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151 configuration files, two ZODB configuration files (<em>zodb.conf.fs</em> for a single FileStorage application process, and |
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152 <em>zodb.conf.zeo</em> for a ZEO client storage; default configuration defined in INI files is based on a single file |
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153 storage) and two Apache configurations (for Apache 2.2 and 2.4) using <em>mod_wsgi</em>.</li> |
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154 </ul> |
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155 <p>Once the project have been created from the scaffold, you are free to update all the configuration files.</p> |
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156 <p>If you need to add packages to the environment, you have to add them to the <em>buildout.cfg</em> file <strong>AND</strong> to the INI |
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157 file (in the <em>pyramid.includes</em> section) before running the <em>buildout</em> another time; don’t forget to add the |
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158 requested version at the end of <em>buildout.cfg</em> file, as Buildout is not configured by default to automatically |
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159 download the last release of a given unknown package.</p> |
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160 <p><em>development.ini</em> and <em>production.ini</em> files contain many commented directives related to PyAMS components. Read and |
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161 update them carefully before initializing your application database!</p> |
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162 </div> |
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163 <div class="section" id="initializing-the-database"> |
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164 <h2>Initializing the database<a class="headerlink" href="#initializing-the-database" title="Permalink to this headline">¶</a></h2> |
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165 <p>When you have downloaded and installed all required packages, you have to initialize the database so that all |
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166 required components are available.</p> |
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167 <p>From a shell, just type:</p> |
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168 <div class="highlight-bash"><div class="highlight"><pre><span class="o">(</span>pyams<span class="o">)</span> <span class="c"># ./bin/pyams_upgrade etc/development.ini</span> |
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169 </pre></div> |
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170 </div> |
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171 <p>This process requires that every package is correctly included into <em>pyramid.includes</em> directive from selected |
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172 configuration file.</p> |
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182 <h3><a href="index.html">Table Of Contents</a></h3> |
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183 <ul> |
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184 <li><a class="reference internal" href="#">Installing PyAMS</a><ul> |
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185 <li><a class="reference internal" href="#creating-initial-buildout">Creating initial buildout</a></li> |
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186 <li><a class="reference internal" href="#environment-settings">Environment settings</a></li> |
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187 <li><a class="reference internal" href="#initializing-the-database">Initializing the database</a></li> |
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188 </ul> |
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191 |
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192 <h4>Previous topic</h4> |
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193 <p class="topless"><a href="index.html" |
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194 title="previous chapter">Welcome to PyAMS_utils’s documentation!</a></p> |
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197 title="next chapter">Managing ZCA with PyAMS</a></p> |
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