gtfs-realtime-bindings | Language bindings generated from the GTFS Realtime protocol
kandi X-RAY | gtfs-realtime-bindings Summary
kandi X-RAY | gtfs-realtime-bindings Summary
GTFS-realtime is a data format for communicating real-time information about public transit systems. GTFS-realtime data is encoded and decoded using Protocol Buffers, a compact binary representation designed for fast and efficient processing. The data schema itself is defined in gtfs-realtime.proto. To work with GTFS-realtime data, a developer would typically use the gtfs-realtime.proto schema to generate classes in the programming language of their choice. These classes can then be used for constructing GTFS-realtime data model objects and serializing them as binary data or, in the reverse direction, parsing binary data into data model objects. Because generating GTFS-realtime data model classes from the gtfs-realtime.proto schema is such a common task, but also one that sometimes causes confusion for first-time developers, this project aims to provide pre-generated GTFS-realtime language bindings for a number of the most popular programming languages. Where possible, these language bindings will be published as packages to facilitate their use in other projects.
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Top functions reviewed by kandi - BETA
- Registers all extensions .
- Gets the descriptor value for this FileDescriptor .
gtfs-realtime-bindings Key Features
gtfs-realtime-bindings Examples and Code Snippets
Lines of Code : 25License : Strong Copyleft (CC BY-SA 4.0)
Copypip install --upgrade gtfs-realtime-bindings
from google.transit import gtfs_realtime_pb2
import urllib.request
feed = gtfs_realtime_pb2.FeedMessage()
pb_url = "http://someURL/someFile.pb"
with urllib.request.ur>>> import my_app
>>> my_app.__file__
'/path/to/virtualenv/lib/python3.6/site-packages/my_app/__init__.py'
Community Discussions
Trending Discussions on gtfs-realtime-bindings
QUESTION
Im using this thing: https://github.com/MobilityData/gtfs-realtime-bindings/tree/final-google-version/java
And I can follow the code-example given. But it only takes me thus far, I dont get how to extract the more fine-grained information. I would like to know how to simply extract the delay for a certain trip, or a stop_id. Can anyone help me?
...ANSWER
Answered 2019-Jun-12 at 15:00The following java program:
QUESTION
I am having problem installing Google GTFS-Realtime bindings library.
When running composer require google/gtfs-realtime-bindings:^0.0.2, I get the following error :
ANSWER
Answered 2019-Feb-22 at 06:46Yes, your assessment is correct. gtfs-realtime-bindings requires centraldesktop/protobuf-php:0.5.* which has an unfortunate requirement on symfony/console. In later version they changed it to be a dev-requirement only (even then only console 3.x).
I don't think you can downgrade your symfony/console version safely. Instead what I would do is create a Pull Request to gtfs-realtime-bindings that bumps the minimum required version of centraldesktop/protobuf-php to ^1.0. This might require other changes to the code as there might have been breaking changes between 0.5 to 1.0. Unfortunately centraldesktop/Protobuf-PHP does not provide an upgrade guide, so you have to figure out if anything breaks via tests or code inspections in your IDE. Luckily gtfs-realtime-bindings is tested and seems to be rather small, so it should be manageable to do this upgrade even if you don't know all the internals. Plus, when you open a pull request that is work in progress maintainers will likely support you.
Another option would be to search for alternative implementations of the bindings or writing your own.
QUESTION
I'm trying to use gtfs-realtime-bindings' node module.
The published module on npm is outdated so I'm downloading directly from github. However, gtfs-realtime-bindings is a super repo has subfolders for a lot of different environments.
How can I specify a subfolder in my require?
...ANSWER
Answered 2019-Jan-29 at 23:41Are you downloading the repo and inserted on your source code? You should be able to use import or require from anywhere, example.
QUESTION
I'm running into what I believe is a fairly common problem in Python apps - ImportError: No module named lib.handle_data - but I'm not experienced enough with the Python/Flask ecosystem to really understand why this is happening, especially since my code was working until I made a small adjustment and reinstalled some dependencies. Ok here's how it went down...
I'm working on a Flask app and, up until a little while ago, it was running fine. I realized that I hadn't included semantic versioning for the dependencies in my setup.py file. Originally, the file looked like this:
ANSWER
Answered 2019-Jan-01 at 02:35this question was already answered to anyone else that stumbles upon this creds to a_guest. Just trying to save other people's time btw a_guest if u want the reputation from me posting this I will delete it and u can post one I just didn't want someone to spend their time on an answered Q
QUESTION
I have the following code:
...ANSWER
Answered 2017-Dec-01 at 22:43There is a lot of material about callbacks and promises on the net. I think you would get the most mileage by reading about that before continuing onto more things since it's so integral to web development (handling async stuff). Jumping off from your last comment though:
QUESTION
MTA Subway data (among other data) is formatted in GTFS-realtime. In order to convert the protobuf into a string representation I must run it through some Google protobuf tools using gtfs-realtime.proto. The only problem is that, as can be seen here, the gtfs-realtime-bindings are available only for
- NET
- Java
- JavaScript / Node.js
- PHP
- Python
- Ruby
- Golang
Additionally,
We don't provide generated code for C++, use the official protoc compiler for that (from here or here)
None of these are Swift or Objective C. While there is an open issue/request for a Swift/Objective C version from 2016, I was wondering what I can do currently in order to do this. As of now, the only viable solution I see is to have a server parse the data and then GET the parsed data (JSON encoded?) from that server instead of directly from the MTA.
Here is the Google page for protocol buffers. I am not sure, but is there some way to use what is there to read the GTFS-realtime data.
Is that the best path forward? Are there any other possibilities?
...ANSWER
Answered 2017-Sep-06 at 23:05There is an official library in Objective C for parsing Protobuf. You can compile classes from the GTFS-rt standard and the MTA extension .proto files.
It looks like your planned usage, having the app connect to the MTA directly, doesn't conform to the MTA terms and conditions:
- In developing your app, you will provide that the MTA data feed is available to others only from a non-MTA server. Accordingly, you will download and store the MTA data feed on a non-MTA server which users of your App will access in order to obtain data. MTA prohibits the development of an app that would make the data available to others directly from MTA's server(s).
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install gtfs-realtime-bindings
You can use gtfs-realtime-bindings like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the gtfs-realtime-bindings component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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