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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.gecko.sync;
import android.util.Log;
import org.mozilla.gecko.background.common.log.Logger;
/**
* Wraps and provides access to configuration data returned from info/configuration.
* Docs: https://docs.services.mozilla.com/storage/apis-1.5.html#general-info
*
* - <bold>max_request_bytes</bold>: the maximum size in bytes of the overall
* HTTP request body that will be accepted by the server.
*
* - <bold>max_post_records</bold>: the maximum number of records that can be
* uploaded to a collection in a single POST request.
*
* - <bold>max_post_bytes</bold>: the maximum combined size in bytes of the
* record payloads that can be uploaded to a collection in a single
* POST request.
*
* - <bold>max_total_records</bold>: the maximum number of records that can be
* uploaded to a collection as part of a batched upload.
*
* - <bold>max_total_bytes</bold>: the maximum combined size in bytes of the
* record payloads that can be uploaded to a collection as part of
* a batched upload.
*/
public class InfoConfiguration {
private static final String LOG_TAG = "InfoConfiguration";
public static final String MAX_REQUEST_BYTES = "max_request_bytes";
public static final String MAX_POST_RECORDS = "max_post_records";
public static final String MAX_POST_BYTES = "max_post_bytes";
public static final String MAX_TOTAL_RECORDS = "max_total_records";
public static final String MAX_TOTAL_BYTES = "max_total_bytes";
private static final long DEFAULT_MAX_REQUEST_BYTES = 1048576;
private static final long DEFAULT_MAX_POST_RECORDS = 100;
private static final long DEFAULT_MAX_POST_BYTES = 1048576;
private static final long DEFAULT_MAX_TOTAL_RECORDS = 10000;
private static final long DEFAULT_MAX_TOTAL_BYTES = 104857600;
// While int's upper range is (2^31-1), which in bytes is equivalent to 2.147 GB, let's be optimistic
// about the future and use long here, so that this code works if the server decides its clients are
// all on fiber and have congress-library sized bookmark collections.
// Record counts are long for the sake of simplicity.
public final long maxRequestBytes;
public final long maxPostRecords;
public final long maxPostBytes;
public final long maxTotalRecords;
public final long maxTotalBytes;
public InfoConfiguration() {
Logger.debug(LOG_TAG, "info/configuration is unavailable, using defaults");
maxRequestBytes = DEFAULT_MAX_REQUEST_BYTES;
maxPostRecords = DEFAULT_MAX_POST_RECORDS;
maxPostBytes = DEFAULT_MAX_POST_BYTES;
maxTotalRecords = DEFAULT_MAX_TOTAL_RECORDS;
maxTotalBytes = DEFAULT_MAX_TOTAL_BYTES;
}
public InfoConfiguration(final ExtendedJSONObject record) {
Logger.debug(LOG_TAG, "info/configuration is " + record.toJSONString());
maxRequestBytes = getValueFromRecord(record, MAX_REQUEST_BYTES, DEFAULT_MAX_REQUEST_BYTES);
maxPostRecords = getValueFromRecord(record, MAX_POST_RECORDS, DEFAULT_MAX_POST_RECORDS);
maxPostBytes = getValueFromRecord(record, MAX_POST_BYTES, DEFAULT_MAX_POST_BYTES);
maxTotalRecords = getValueFromRecord(record, MAX_TOTAL_RECORDS, DEFAULT_MAX_TOTAL_RECORDS);
maxTotalBytes = getValueFromRecord(record, MAX_TOTAL_BYTES, DEFAULT_MAX_TOTAL_BYTES);
}
private static Long getValueFromRecord(ExtendedJSONObject record, String key, long defaultValue) {
if (!record.containsKey(key)) {
return defaultValue;
}
try {
Long val = record.getLong(key);
if (val == null) {
return defaultValue;
}
return val;
} catch (NumberFormatException e) {
Log.w(LOG_TAG, "Could not parse key " + key + " from record: " + record, e);
return defaultValue;
}
}
}
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