Mozilla Telemetry JSON Decoder Module

1. Decoder Configuration Table

decoders_moz_ingest_json = {
    -- String used to specify the root namespace directory. The path should
    -- contain one directory for each namespace. Each namespace directory should
    -- contain one directory for each docType and the files in the directory
    -- must be named <docType>.<version>.schema.json. If the schema file is not
    -- found for a namespace/docType/version combination, an error is generated.
    namespace_path = "/mnt/work/mozilla-pipeline-schemas/schemas",

    -- array of namespace directories to ignore
    -- namespace_ignore = {"heka", "metadata", "pioneer-study", "telemetry"},

    -- Transform the User-Agent header into user_agent_browser, user_agent_version, user_agent_os.
    -- user_agent_transform = false, -- default

    -- Always preserve the User-Agent header if transform is enabled.
    -- user_agent_keep = false, -- default

    -- Only preserve the User-Agent header if transform is enabled and fails.
    -- user_agent_conditional = false, -- default


2. Functions

2.1. transform_message

Transform and inject the message using the provided stream reader.


  • hsr (hsr) - stream reader with the message to process


  • throws on error

2.2. decode

Decode and inject the message given as argument, using a module-internal stream reader.


  • msg (string) - Heka protobuf string to decode


  • throws on error

source code: json.lua

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