[db-api/configuration] simplify db-api and configuration so that all the connection information is in the repository url, closes #2521848 eg no more specific option of pyro ns host, group, etc. This also fixes broken ZMQ sources. Changes: * dropped pyro-ns-host, pyro-instance-id, pyro-ns-group from client side config, in favor of repository-uri. No migration done, supposing there is **no web-only config** in the wild. Also stop discovering the connection method through the repo_method class attribute of the configuration, varying according to the configuration class. This is a first step on the way to a simpler configuration handling. Notice those pyro options are still available for repository only / all-in-one configurations as they are needed to configure the pyro server. * stop telling connection method using ConnectionProperties, this is so boring. Also, drop _cnxtype from Connection and cnxtype from Session. The former is replaced by a is_repo_in_memory property and the later is totaly useless. * deprecate in_memory_cnx which becomes useless, use _repo_connect instead

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"""This module compare the Schema on the file system to the one in the database"""

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from cStringIO import StringIO

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from cubicweb.web.schemaviewer import SchemaViewer

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from logilab.common.ureports import TextWriter

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import difflib

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viewer = SchemaViewer()

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layout_db = viewer.visit_schema(schema, display_relations=True)

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layout_fs = viewer.visit_schema(fsschema, display_relations=True)

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writer = TextWriter()

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stream_db = StringIO()

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stream_fs = StringIO()

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writer.format(layout_db, stream=stream_db)

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writer.format(layout_fs, stream=stream_fs)

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stream_db.seek(0)

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stream_fs.seek(0)

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db = stream_db.getvalue().splitlines()

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fs = stream_fs.getvalue().splitlines()

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open('db_schema.txt', 'w').write(stream_db.getvalue())

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open('fs_schema.txt', 'w').write(stream_fs.getvalue())

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#for diff in difflib.ndiff(fs, db):

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#    print diff