spec: specify that DataEnd will not be extended (foxglove#1061)

### Public-Facing Changes The spec has been updated to say that DataEnd records will not have extra records added in the future. This will not affect most readers or writers of MCAP files, but enables workflows for appending data to existing indexed files. ### Description This change allows readers to assume that `Footer.summary_offset - 13` is the beginning of the `DataEnd` record. Without it, this line of code is wrong: https://github.com/foxglove/mcap/blob/4d62967abe95e755b91f16cce390f6560d18e07e/go/cli/mcap/utils/mcap_amendment.go#L45-L46 See also: foxglove#1060
MacroJou · Feb 28, 2024 · 37cb2d1 · 37cb2d1
1 parent 24a6c39
commit 37cb2d1
Show file tree

Hide file tree

Showing 530 changed files with 21,385 additions and 78,331 deletions.
diff --git a/tests/conformance/data/NoData/NoData-pad-st-sum.json b/tests/conformance/data/NoData/NoData-pad-st-sum.json
diff --git a/tests/conformance/data/NoData/NoData-pad-st-sum.mcap b/tests/conformance/data/NoData/NoData-pad-st-sum.mcap
diff --git a/tests/conformance/data/NoData/NoData-pad-st.json b/tests/conformance/data/NoData/NoData-pad-st.json
diff --git a/tests/conformance/data/NoData/NoData-pad-st.mcap b/tests/conformance/data/NoData/NoData-pad-st.mcap
diff --git a/tests/conformance/data/NoData/NoData-pad.mcap b/tests/conformance/data/NoData/NoData-pad.mcap
diff --git a/tests/conformance/data/OneAttachment/OneAttachment-ax-pad-st-sum.json b/tests/conformance/data/OneAttachment/OneAttachment-ax-pad-st-sum.json
diff --git a/tests/conformance/data/OneAttachment/OneAttachment-ax-pad-st-sum.mcap b/tests/conformance/data/OneAttachment/OneAttachment-ax-pad-st-sum.mcap
diff --git a/tests/conformance/data/OneAttachment/OneAttachment-ax-pad-st.json b/tests/conformance/data/OneAttachment/OneAttachment-ax-pad-st.json
diff --git a/tests/conformance/data/OneAttachment/OneAttachment-ax-pad-st.mcap b/tests/conformance/data/OneAttachment/OneAttachment-ax-pad-st.mcap
diff --git a/tests/conformance/data/OneAttachment/OneAttachment-ax-pad-sum.json b/tests/conformance/data/OneAttachment/OneAttachment-ax-pad-sum.json
diff --git a/tests/conformance/data/OneAttachment/OneAttachment-ax-pad-sum.mcap b/tests/conformance/data/OneAttachment/OneAttachment-ax-pad-sum.mcap
diff --git a/tests/conformance/data/OneAttachment/OneAttachment-ax-pad.json b/tests/conformance/data/OneAttachment/OneAttachment-ax-pad.json
diff --git a/tests/conformance/data/OneAttachment/OneAttachment-ax-pad.mcap b/tests/conformance/data/OneAttachment/OneAttachment-ax-pad.mcap
diff --git a/tests/conformance/data/OneAttachment/OneAttachment-pad-st-sum.json b/tests/conformance/data/OneAttachment/OneAttachment-pad-st-sum.json
diff --git a/tests/conformance/data/OneAttachment/OneAttachment-pad-st-sum.mcap b/tests/conformance/data/OneAttachment/OneAttachment-pad-st-sum.mcap
diff --git a/tests/conformance/data/OneAttachment/OneAttachment-pad-st.json b/tests/conformance/data/OneAttachment/OneAttachment-pad-st.json
diff --git a/tests/conformance/data/OneAttachment/OneAttachment-pad-st.mcap b/tests/conformance/data/OneAttachment/OneAttachment-pad-st.mcap
diff --git a/tests/conformance/data/OneAttachment/OneAttachment-pad.mcap b/tests/conformance/data/OneAttachment/OneAttachment-pad.mcap
diff --git a/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-rsh-st-sum.json b/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-rsh-st-sum.json
diff --git a/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-rsh-st-sum.mcap b/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-rsh-st-sum.mcap
diff --git a/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-rsh-st.json b/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-rsh-st.json
diff --git a/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-rsh-st.mcap b/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-rsh-st.mcap
diff --git a/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-rsh-sum.json b/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-rsh-sum.json
diff --git a/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-rsh-sum.mcap b/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-rsh-sum.mcap
diff --git a/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-rsh.json b/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-rsh.json
diff --git a/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-rsh.mcap b/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-rsh.mcap
diff --git a/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-st-sum.json b/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-st-sum.json
diff --git a/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-st-sum.mcap b/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-st-sum.mcap
diff --git a/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-st.json b/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-st.json
diff --git a/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-st.mcap b/tests/conformance/data/OneMessage/OneMessage-ch-chx-mx-pad-rch-st.mcap