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sources: improve handling of dump files and their format

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Check for write errors when saving dump files. Don't save files with no
samples. Add more sanity checks for loaded data.

Extend the file format to include an identifier, the reachability
register, leap status, name, and authentication flag. Avoid loading
unauthenticated data after switching authentication on. Change format
and order of some fields to simplify parsing. Drop fields that were kept
only for compatibility.

The dump files now contain all information needed to perform the source
selection and update the reference.

There is no support kept for the old file format. Loading of old dump
files will fail after upgrading to new version.
This commit is contained in:
Miroslav Lichvar
2021-02-03 17:13:39 +01:00
parent 1a8dcce84f
commit f8610d69f0
3 changed files with 136 additions and 105 deletions
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2
sourcestats.h
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@@ -119,7 +119,7 @@ extern int SST_GetDelayTestData(SST_Stats inst, struct timespec *sample_time,
double *last_sample_ago, double *predicted_offset,
double *min_delay, double *skew, double *std_dev);
extern void SST_SaveToFile(SST_Stats inst, FILE *out);
extern int SST_SaveToFile(SST_Stats inst, FILE *out);
extern int SST_LoadFromFile(SST_Stats inst, FILE *in);