Re: [PATCH 10/40] external-odb: implement external_odb_get_direct

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On 1/3/2018 11:33 AM, Christian Couder wrote:
This is implemented only in the promisor remote mode
for now by calling fetch_object().

Signed-off-by: Christian Couder <chriscool@xxxxxxxxxxxxx>
---
  external-odb.c | 15 +++++++++++++++
  external-odb.h |  1 +
  odb-helper.c   | 13 +++++++++++++
  odb-helper.h   |  3 ++-
  4 files changed, 31 insertions(+), 1 deletion(-)

diff --git a/external-odb.c b/external-odb.c
index d26e63d8b1..5d0afb9762 100644
--- a/external-odb.c
+++ b/external-odb.c
@@ -76,3 +76,18 @@ int external_odb_has_object(const unsigned char *sha1)
  			return 1;
  	return 0;
  }
+
+int external_odb_get_direct(const unsigned char *sha1)
+{
+	struct odb_helper *o;
+
+	external_odb_init();
+
+	for (o = helpers; o; o = o->next) {
+		if (odb_helper_get_direct(o, sha1) < 0)
+			continue;
+		return 0;
> +	}

Would this be simpler said as:
	for (o = ...)
		if (!odb_helper_get_direct(...))
			return 0;


+
+	return -1;
+}
diff --git a/external-odb.h b/external-odb.h
index 9a3c2f01b3..fd6708163e 100644
--- a/external-odb.h
+++ b/external-odb.h
@@ -4,5 +4,6 @@
  extern int has_external_odb(void);
  extern const char *external_odb_root(void);
  extern int external_odb_has_object(const unsigned char *sha1);
+extern int external_odb_get_direct(const unsigned char *sha1);
#endif /* EXTERNAL_ODB_H */
diff --git a/odb-helper.c b/odb-helper.c
index 1404393807..4b70b287af 100644
--- a/odb-helper.c
+++ b/odb-helper.c
@@ -4,6 +4,7 @@
  #include "odb-helper.h"
  #include "run-command.h"
  #include "sha1-lookup.h"
+#include "fetch-object.h"
struct odb_helper *odb_helper_new(const char *name, int namelen)
  {
@@ -52,3 +53,15 @@ int odb_helper_has_object(struct odb_helper *o, const unsigned char *sha1)
  	return !!odb_helper_lookup(o, sha1);
  }
+int odb_helper_get_direct(struct odb_helper *o,
+			  const unsigned char *sha1)
+{
+	int res = 0;
+	uint64_t start = getnanotime();
+
+	fetch_object(o->dealer, sha1);
+
+	trace_performance_since(start, "odb_helper_get_direct");
+
+	return res;

'res' will always be 0, so the external_odb_get_direct() will
only do the first helper.  i haven't looked at the rest of the
series yet, so maybe you've already addressed this.

Also, I put a TODO comment in the fetch_object() header to
consider returning an error/success, so maybe that could help
here too.

+}
diff --git a/odb-helper.h b/odb-helper.h
index 9395e606ce..f4bc66b0ef 100644
--- a/odb-helper.h
+++ b/odb-helper.h
@@ -20,5 +20,6 @@ struct odb_helper {
  extern struct odb_helper *odb_helper_new(const char *name, int namelen);
  extern int odb_helper_has_object(struct odb_helper *o,
  				 const unsigned char *sha1);
-
+extern int odb_helper_get_direct(struct odb_helper *o,
+				 const unsigned char *sha1);
  #endif /* ODB_HELPER_H */




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