JSON data table stays empty (Invalid argument supplied for foreach() in JsonContent.php)

[arminbw]

Context: At first building the docker container failed on my machine. The culprit was importTextFiles.php which is broken in MediaWiki 1.35.0. Downgrading to MediaWiki 1.34.4 helped, but now I got another problem:

When looking at a Z-Object in the browser, the "JSON data" table stays empty. After a very long loading period (maybe a timeout), I get a warning: Warning: Invalid argument supplied for foreach() in /var/www/html/includes/content/JsonContent.php on line 142

The raw JSON data table renders just fine. I guess my docker setup needs some more fine-tuning. Which MediaWiki version are you using? And is there anything else I should look into? Do I have to prepare anything specific in the local copy of AbstractText?

[arthurpsmith]

Here's the Dockerfile I used most recently for this, I believe it worked (this was back in June 2020).

FROM php:7.3-apache LABEL maintainer="arthurpsmith@gmail.com"

System dependencies

RUN set -eux; \ \ apt-get update; \ apt-get install -y --no-install-recommends \ git \ librsvg2-bin \ imagemagick \

Required for SyntaxHighlighting

            python3 \
    ; \
    rm -rf /var/lib/apt/lists/*

Install the PHP extensions we need

RUN set -eux; \ \ savedAptMark="$(apt-mark showmanual)"; \ \ apt-get update; \ apt-get install -y --no-install-recommends \ libicu-dev \ ; \ \ docker-php-ext-install -j "$(nproc)" \ intl \ mbstring \ mysqli \ opcache \ ; \ \ pecl install apcu-5.1.18; \ docker-php-ext-enable \ apcu \ ; \ \

reset apt-mark's "manual" list so that "purge --auto-remove" will remove all build dependencies

    apt-mark auto '.*' > /dev/null; \
    apt-mark manual $savedAptMark; \
    ldd "$(php -r 'echo ini_get("extension_dir");')"/*.so \
            | awk '/=>/ { print $3 }' \
            | sort -u \
            | xargs -r dpkg-query -S \
            | cut -d: -f1 \
            | sort -u \
            | xargs -rt apt-mark manual; \
    \
    apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
    rm -rf /var/lib/apt/lists/*

Enable Short URLs

RUN set -eux; \ a2enmod rewrite; \ { \ echo '<Directory /var/www/html>'; \ echo ' RewriteEngine On'; \ echo ' RewriteCond %{REQUEST_FILENAME} !-f'; \ echo ' RewriteCond %{REQUEST_FILENAME} !-d'; \ echo ' RewriteRule ^ %{DOCUMENT_ROOT}/index.php [L]'; \ echo ''; \ } > "$APACHE_CONFDIR/conf-available/short-url.conf"; \ a2enconf short-url

set recommended PHP.ini settings

see https://secure.php.net/manual/en/opcache.installation.php

RUN { \ echo 'opcache.memory_consumption=128'; \ echo 'opcache.interned_strings_buffer=8'; \ echo 'opcache.max_accelerated_files=4000'; \ echo 'opcache.revalidate_freq=60'; \ echo 'opcache.fast_shutdown=1'; \ } > /usr/local/etc/php/conf.d/opcache-recommended.ini

SQLite Directory Setup

RUN set -eux; \ mkdir -p /var/www/data; \ chown -R www-data:www-data /var/www/data

MediaWiki setup - specify 1.35.0-wmf.38 version

RUN set -eux; \ git clone https://gerrit.wikimedia.org/r/mediawiki/core.git --branch wmf/1.35.0-wmf.38 /var/www/html && \ cd /var/www/html && \ git submodule update --init

RUN apt-get update; \ apt-get install -q -y curl nodejs npm RUN npm install npm@latest -g

RUN cd /var/www/html/extensions && \ git clone https://github.com/google/abstracttext.git AbstractText

RUN cd /var/www/html/extensions/AbstractText/eneyj && \ npm install && \ npm install uuid && \ mkdir config && \ mkdir config/runs && \ node src/scripts/labelMap.js && \ cp src/scripts/calibration-initial.json config/calibration.json && \ node src/scripts/measure.js --chatty && \ node src/scripts/calibrate.js

COPY DockerLocalSettings.php /var/www/html/DockerLocalSettings.php COPY AdditionalLocalSettings.php /tmp/AdditionalLocalSettings.php COPY admin_passwd /tmp/admin_passwd

RUN cd /var/www/html && \ php maintenance/install.php --server http://localhost:8081 --dbtype sqlite --dbpath /var/www/data --scriptpath "" --passfile /tmp/admin_passwd "Lambda" "admin" RUN cat /tmp/AdditionalLocalSettings.php >> /var/www/html/LocalSettings.php

RUN cd /var/www/html && php maintenance/update.php

RUN cd /var/www/html && \ php maintenance/importTextFiles.php -s "Import data" --prefix "M:" --overwrite extensions/AbstractText/eneyj/data/Z*

RUN chown -R www-data /var/www/data

[arminbw]

@arthurpsmith Thanks. A few things got swallowed when you copy-pasted this. My interpretation (with a few "fixes") is here.

I couldn’t find the 1.35.0-wmf.38 branch you recommended, so I checked out tags/1.35.1 instead.

Now MediaWiki is missing some external dependencies. I guess I have some more reading to do.

[arminbw]

However, as this is an abandoned proof-of-concept prototype, I guess it doesn’t make much sense to invest any more time. I wanted to play around with it, when I considered joining the abstract team. As this didn’t work out, I will try to keep an eye on what happens here. Best luck! I hope this project will grow and blossom!